From: Paolo Valente paolo.valente@linaro.org

[ Upstream commit db37a34c563bf4692b36990ae89005c031385e52 ]

BFQ schedules generic entities, which may represent either bfq_queues or groups of bfq_queues. When an entity is inserted into a service tree, a reference must be taken, to make sure that the entity does not disappear while still referred in the tree. Unfortunately, such a reference is mistakenly taken only if the entity represents a bfq_queue. This commit takes a reference also in case the entity represents a group.

Tested-by: Oleksandr Natalenko oleksandr@natalenko.name Tested-by: Chris Evich cevich@redhat.com Signed-off-by: Paolo Valente paolo.valente@linaro.org Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- block/bfq-cgroup.c | 2 +- block/bfq-iosched.h | 1 + block/bfq-wf2q.c | 12 ++++++++++-- 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/block/bfq-cgroup.c b/block/bfq-cgroup.c index 86a607cf19a10..0999d56bc4d19 100644 --- a/block/bfq-cgroup.c +++ b/block/bfq-cgroup.c @@ -332,7 +332,7 @@ static void bfqg_put(struct bfq_group *bfqg) kfree(bfqg); }

-static void bfqg_and_blkg_get(struct bfq_group *bfqg) +void bfqg_and_blkg_get(struct bfq_group *bfqg) { /* see comments in bfq_bic_update_cgroup for why refcounting bfqg */ bfqg_get(bfqg); diff --git a/block/bfq-iosched.h b/block/bfq-iosched.h index 5d1a519640f6a..e0e4a413d43a5 100644 --- a/block/bfq-iosched.h +++ b/block/bfq-iosched.h @@ -978,6 +978,7 @@ struct bfq_group *bfq_find_set_group(struct bfq_data *bfqd, struct blkcg_gq *bfqg_to_blkg(struct bfq_group *bfqg); struct bfq_group *bfqq_group(struct bfq_queue *bfqq); struct bfq_group *bfq_create_group_hierarchy(struct bfq_data *bfqd, int node); +void bfqg_and_blkg_get(struct bfq_group *bfqg); void bfqg_and_blkg_put(struct bfq_group *bfqg);

#ifdef CONFIG_BFQ_GROUP_IOSCHED diff --git a/block/bfq-wf2q.c b/block/bfq-wf2q.c index 05f0bf4a1144d..44079147e396e 100644 --- a/block/bfq-wf2q.c +++ b/block/bfq-wf2q.c @@ -536,7 +536,9 @@ static void bfq_get_entity(struct bfq_entity *entity) bfqq->ref++; bfq_log_bfqq(bfqq->bfqd, bfqq, "get_entity: %p %d", bfqq, bfqq->ref); - } + } else + bfqg_and_blkg_get(container_of(entity, struct bfq_group, + entity)); }

/** @@ -650,8 +652,14 @@ static void bfq_forget_entity(struct bfq_service_tree *st,

entity->on_st = false; st->wsum -= entity->weight; - if (bfqq && !is_in_service) + if (is_in_service) + return; + + if (bfqq) bfq_put_queue(bfqq); + else + bfqg_and_blkg_put(container_of(entity, struct bfq_group, + entity)); }

/**

From: Paolo Valente paolo.valente@linaro.org

[ Upstream commit 32c59e3a9a5a0b180dd015755d6d18ca31e55935 ]

BFQ maintains an ordered list, implemented with an RB tree, of head-request positions of non-empty bfq_queues. This position tree, inherited from CFQ, is used to find bfq_queues that contain I/O close to each other. BFQ merges these bfq_queues into a single shared queue, if this boosts throughput on the device at hand.

There is however a special-purpose bfq_queue that does not participate in queue merging, the oom bfq_queue. Yet, also this bfq_queue could be wrongly added to the position tree. So bfqq_find_close() could return the oom bfq_queue, which is a source of further troubles in an out-of-memory situation. This commit prevents the oom bfq_queue from being inserted into the position tree.

Tested-by: Patrick Dung patdung100@gmail.com Tested-by: Oleksandr Natalenko oleksandr@natalenko.name Signed-off-by: Paolo Valente paolo.valente@linaro.org Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- block/bfq-iosched.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c index 5498d05b873d3..955daa29303a8 100644 --- a/block/bfq-iosched.c +++ b/block/bfq-iosched.c @@ -614,6 +614,10 @@ bfq_pos_tree_add_move(struct bfq_data *bfqd, struct bfq_queue *bfqq) bfqq->pos_root = NULL; }

+ /* oom_bfqq does not participate in queue merging */ + if (bfqq == &bfqd->oom_bfqq) + return; + /* * bfqq cannot be merged any longer (see comments in * bfq_setup_cooperator): no point in adding bfqq into the

From: Florian Fainelli f.fainelli@gmail.com

[ Upstream commit 98c5f7d44fef309e692c24c6d71131ee0f0871fb ]

We are still experiencing some packet loss with the existing advanced congestion buffering (ACB) settings with the IMP port configured for 2Gb/sec, so revert to conservative link speeds that do not produce packet loss until this is resolved.

Fixes: 8f1880cbe8d0 ("net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec") Fixes: de34d7084edd ("net: dsa: bcm_sf2: Only 7278 supports 2Gb/sec IMP port") Signed-off-by: Florian Fainelli f.fainelli@gmail.com Reviewed-by: Vivien Didelot vivien.didelot@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/dsa/bcm_sf2.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c index fecd5e674e04c..46dc913da852d 100644 --- a/drivers/net/dsa/bcm_sf2.c +++ b/drivers/net/dsa/bcm_sf2.c @@ -69,8 +69,7 @@ static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port) /* Force link status for IMP port */ reg = core_readl(priv, offset); reg |= (MII_SW_OR | LINK_STS); - if (priv->type == BCM7278_DEVICE_ID) - reg |= GMII_SPEED_UP_2G; + reg &= ~GMII_SPEED_UP_2G; core_writel(priv, reg, offset);

/* Enable Broadcast, Multicast, Unicast forwarding to IMP port */

From: Theodore Ts'o tytso@mit.edu

[ Upstream commit 3918e0667bbac99400b44fa5aef3f8be2eeada4a ]

[ 3934.173244] ====================================================== [ 3934.179572] WARNING: possible circular locking dependency detected [ 3934.185884] 5.4.21-xfstests #1 Not tainted [ 3934.190151] ------------------------------------------------------ [ 3934.196673] dmsetup/8897 is trying to acquire lock: [ 3934.201688] ffffffffbce82b18 (shrinker_rwsem){++++}, at: unregister_shrinker+0x22/0x80 [ 3934.210268] but task is already holding lock: [ 3934.216489] ffff92a10cc5e1d0 (&pmd->root_lock){++++}, at: dm_pool_metadata_close+0xba/0x120 [ 3934.225083] which lock already depends on the new lock.

[ 3934.564165] Chain exists of: shrinker_rwsem --> &journal->j_checkpoint_mutex --> &pmd->root_lock

For a more detailed lockdep report, please see:

https://lore.kernel.org/r/20200220234519.GA620489@mit.edu

We shouldn't need to hold the lock while are just tearing down and freeing the whole metadata pool structure.

Fixes: 44d8ebf436399a4 ("dm thin metadata: use pool locking at end of dm_pool_metadata_close") Signed-off-by: Theodore Ts'o tytso@mit.edu Signed-off-by: Mike Snitzer snitzer@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-thin-metadata.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c index 8bb723f1a569a..4cd8868f80040 100644 --- a/drivers/md/dm-thin-metadata.c +++ b/drivers/md/dm-thin-metadata.c @@ -960,9 +960,9 @@ int dm_pool_metadata_close(struct dm_pool_metadata *pmd) DMWARN("%s: __commit_transaction() failed, error = %d", __func__, r); } + pmd_write_unlock(pmd); if (!pmd->fail_io) __destroy_persistent_data_objects(pmd); - pmd_write_unlock(pmd);

kfree(pmd); return 0;

From: Nathan Chancellor natechancellor@gmail.com

[ Upstream commit 4ca501d6aaf21de31541deac35128bbea8427aa6 ]

Clang warns:

../drivers/infiniband/core/security.c:351:41: warning: converting the enum constant to a boolean [-Wint-in-bool-context] if (!(qp_attr_mask & (IB_QP_PKEY_INDEX || IB_QP_PORT)) && qp_pps) { ^ 1 warning generated.

A bitwise OR should have been used instead.

Fixes: 1dd017882e01 ("RDMA/core: Fix protection fault in get_pkey_idx_qp_list") Link: https://lore.kernel.org/r/20200217204318.13609-1-natechancellor@gmail.com Link: https://github.com/ClangBuiltLinux/linux/issues/889 Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Nathan Chancellor natechancellor@gmail.com Reviewed-by: Leon Romanovsky leonro@mellanox.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/core/security.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/core/security.c b/drivers/infiniband/core/security.c index 9e27ca18d3270..2d5608315dc80 100644 --- a/drivers/infiniband/core/security.c +++ b/drivers/infiniband/core/security.c @@ -352,7 +352,7 @@ static struct ib_ports_pkeys *get_new_pps(const struct ib_qp *qp, if ((qp_attr_mask & IB_QP_PKEY_INDEX) && (qp_attr_mask & IB_QP_PORT)) new_pps->main.state = IB_PORT_PKEY_VALID;

- if (!(qp_attr_mask & (IB_QP_PKEY_INDEX || IB_QP_PORT)) && qp_pps) { + if (!(qp_attr_mask & (IB_QP_PKEY_INDEX | IB_QP_PORT)) && qp_pps) { new_pps->main.port_num = qp_pps->main.port_num; new_pps->main.pkey_index = qp_pps->main.pkey_index; if (qp_pps->main.state != IB_PORT_PKEY_NOT_VALID)

From: Masami Hiramatsu mhiramat@kernel.org

[ Upstream commit e4add247789e4ba5e08ad8256183ce2e211877d4 ]

optimize_kprobe() and unoptimize_kprobe() cancels if a given kprobe is on the optimizing_list or unoptimizing_list already. However, since the following commit:

f66c0447cca1 ("kprobes: Set unoptimized flag after unoptimizing code")

modified the update timing of the KPROBE_FLAG_OPTIMIZED, it doesn't work as expected anymore.

The optimized_kprobe could be in the following states:

- [optimizing]: Before inserting jump instruction op.kp->flags has KPROBE_FLAG_OPTIMIZED and op->list is not empty.

- [optimized]: jump inserted op.kp->flags has KPROBE_FLAG_OPTIMIZED and op->list is empty.

- [unoptimizing]: Before removing jump instruction (including unused optprobe) op.kp->flags has KPROBE_FLAG_OPTIMIZED and op->list is not empty.

- [unoptimized]: jump removed op.kp->flags doesn't have KPROBE_FLAG_OPTIMIZED and op->list is empty.

Current code mis-expects [unoptimizing] state doesn't have KPROBE_FLAG_OPTIMIZED, and that can cause incorrect results.

To fix this, introduce optprobe_queued_unopt() to distinguish [optimizing] and [unoptimizing] states and fixes the logic in optimize_kprobe() and unoptimize_kprobe().

[ mingo: Cleaned up the changelog and the code a bit. ]

Signed-off-by: Masami Hiramatsu mhiramat@kernel.org Reviewed-by: Steven Rostedt (VMware) rostedt@goodmis.org Cc: Alexei Starovoitov ast@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: Thomas Gleixner tglx@linutronix.de Cc: bristot@redhat.com Fixes: f66c0447cca1 ("kprobes: Set unoptimized flag after unoptimizing code") Link: https://lkml.kernel.org/r/157840814418.7181.13478003006386303481.stgit@devno... Signed-off-by: Ingo Molnar mingo@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/kprobes.c | 67 +++++++++++++++++++++++++++++++----------------- 1 file changed, 43 insertions(+), 24 deletions(-)

diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 34e28b236d680..2625c241ac00f 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -612,6 +612,18 @@ void wait_for_kprobe_optimizer(void) mutex_unlock(&kprobe_mutex); }

+static bool optprobe_queued_unopt(struct optimized_kprobe *op) +{ + struct optimized_kprobe *_op; + + list_for_each_entry(_op, &unoptimizing_list, list) { + if (op == _op) + return true; + } + + return false; +} + /* Optimize kprobe if p is ready to be optimized */ static void optimize_kprobe(struct kprobe *p) { @@ -633,17 +645,21 @@ static void optimize_kprobe(struct kprobe *p) return;

/* Check if it is already optimized. */ - if (op->kp.flags & KPROBE_FLAG_OPTIMIZED) + if (op->kp.flags & KPROBE_FLAG_OPTIMIZED) { + if (optprobe_queued_unopt(op)) { + /* This is under unoptimizing. Just dequeue the probe */ + list_del_init(&op->list); + } return; + } op->kp.flags |= KPROBE_FLAG_OPTIMIZED;

- if (!list_empty(&op->list)) - /* This is under unoptimizing. Just dequeue the probe */ - list_del_init(&op->list); - else { - list_add(&op->list, &optimizing_list); - kick_kprobe_optimizer(); - } + /* On unoptimizing/optimizing_list, op must have OPTIMIZED flag */ + if (WARN_ON_ONCE(!list_empty(&op->list))) + return; + + list_add(&op->list, &optimizing_list); + kick_kprobe_optimizer(); }

/* Short cut to direct unoptimizing */ @@ -665,30 +681,33 @@ static void unoptimize_kprobe(struct kprobe *p, bool force) return; /* This is not an optprobe nor optimized */

op = container_of(p, struct optimized_kprobe, kp); - if (!kprobe_optimized(p)) { - /* Unoptimized or unoptimizing case */ - if (force && !list_empty(&op->list)) { - /* - * Only if this is unoptimizing kprobe and forced, - * forcibly unoptimize it. (No need to unoptimize - * unoptimized kprobe again :) - */ - list_del_init(&op->list); - force_unoptimize_kprobe(op); - } + if (!kprobe_optimized(p)) return; - }

if (!list_empty(&op->list)) { - /* Dequeue from the optimization queue */ - list_del_init(&op->list); + if (optprobe_queued_unopt(op)) { + /* Queued in unoptimizing queue */ + if (force) { + /* + * Forcibly unoptimize the kprobe here, and queue it + * in the freeing list for release afterwards. + */ + force_unoptimize_kprobe(op); + list_move(&op->list, &freeing_list); + } + } else { + /* Dequeue from the optimizing queue */ + list_del_init(&op->list); + op->kp.flags &= ~KPROBE_FLAG_OPTIMIZED; + } return; } + /* Optimized kprobe case */ - if (force) + if (force) { /* Forcibly update the code: this is a special case */ force_unoptimize_kprobe(op); - else { + } else { list_add(&op->list, &unoptimizing_list); kick_kprobe_optimizer(); }

From: Kai Vehmanen kai.vehmanen@linux.intel.com

[ Upstream commit 43bcb1c0507858cdc95e425017dcc33f8105df39 ]

snd_hdac_ext_bus_link_get() does not work correctly in case there are multiple codecs on the bus. It unconditionally resets the bus->codec_mask value. As per documentation in hdaudio.h and existing use in client code, this field should be used to store bit flag of detected codecs on the bus.

By overwriting value of the codec_mask, information on all detected codecs is lost. No current user of hdac is impacted, but use of bus->codec_mask is planned in future patches for SOF.

Signed-off-by: Kai Vehmanen kai.vehmanen@linux.intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Takashi Iwai tiwai@suse.de Link: https://lore.kernel.org/r/20200206200223.7715-1-kai.vehmanen@linux.intel.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/hda/ext/hdac_ext_controller.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/sound/hda/ext/hdac_ext_controller.c b/sound/hda/ext/hdac_ext_controller.c index cfab60d88c921..09ff209df4a30 100644 --- a/sound/hda/ext/hdac_ext_controller.c +++ b/sound/hda/ext/hdac_ext_controller.c @@ -254,6 +254,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_down_all); int snd_hdac_ext_bus_link_get(struct hdac_bus *bus, struct hdac_ext_link *link) { + unsigned long codec_mask; int ret = 0;

mutex_lock(&bus->lock); @@ -280,9 +281,11 @@ int snd_hdac_ext_bus_link_get(struct hdac_bus *bus, * HDA spec section 4.3 - Codec Discovery */ udelay(521); - bus->codec_mask = snd_hdac_chip_readw(bus, STATESTS); - dev_dbg(bus->dev, "codec_mask = 0x%lx\n", bus->codec_mask); - snd_hdac_chip_writew(bus, STATESTS, bus->codec_mask); + codec_mask = snd_hdac_chip_readw(bus, STATESTS); + dev_dbg(bus->dev, "codec_mask = 0x%lx\n", codec_mask); + snd_hdac_chip_writew(bus, STATESTS, codec_mask); + if (!bus->codec_mask) + bus->codec_mask = codec_mask; }

mutex_unlock(&bus->lock);

From: Jiri Benc jbenc@redhat.com

[ Upstream commit c363eb48ada5cf732b3f489fab799fc881097842 ]

With some shells, the command construed for install of bpf selftests becomes too large due to long list of files:

make[1]: execvp: /bin/sh: Argument list too long make[1]: *** [../lib.mk:73: install] Error 127

Currently, each of the file lists is replicated three times in the command: in the shell 'if' condition, in the 'echo' and in the 'rsync'. Reduce that by one instance by using make conditionals and separate the echo and rsync into two shell commands. (One would be inclined to just remove the '@' at the beginning of the rsync command and let 'make' echo it by itself; unfortunately, it appears that the '@' in the front of mkdir silences output also for the following commands.)

Also, separate handling of each of the lists to its own shell command.

The semantics of the makefile is unchanged before and after the patch. The ability of individual test directories to override INSTALL_RULE is retained.

Reported-by: Yauheni Kaliuta yauheni.kaliuta@redhat.com Tested-by: Yauheni Kaliuta yauheni.kaliuta@redhat.com Signed-off-by: Jiri Benc jbenc@redhat.com Signed-off-by: Shuah Khan skhan@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/lib.mk | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index 1c8a1963d03f8..3ed0134a764d4 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -83,17 +83,20 @@ else $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS)) endif

+define INSTALL_SINGLE_RULE + $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)) + $(if $(INSTALL_LIST),@echo rsync -a $(INSTALL_LIST) $(INSTALL_PATH)/) + $(if $(INSTALL_LIST),@rsync -a $(INSTALL_LIST) $(INSTALL_PATH)/) +endef + define INSTALL_RULE - @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \ - mkdir -p ${INSTALL_PATH}; \ - echo "rsync -a $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(INSTALL_PATH)/"; \ - rsync -a $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(INSTALL_PATH)/; \ - fi - @if [ "X$(TEST_GEN_PROGS)$(TEST_CUSTOM_PROGS)$(TEST_GEN_PROGS_EXTENDED)$(TEST_GEN_FILES)" != "X" ]; then \ - mkdir -p ${INSTALL_PATH}; \ - echo "rsync -a $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(INSTALL_PATH)/"; \ - rsync -a $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(INSTALL_PATH)/; \ - fi + $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE) + $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) + $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE) + $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE) + $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE) + $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) + $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE) endef

install: all

From: Lars-Peter Clausen lars@metafoo.de

[ Upstream commit 43d565727a3a6fd24e37c7c2116475106af71806 ]

ffs_aio_cancel() can be called from both interrupt and thread context. Make sure that the current IRQ state is saved and restored by using spin_{un,}lock_irq{save,restore}().

Otherwise undefined behavior might occur.

Acked-by: Michal Nazarewicz mina86@mina86.com Signed-off-by: Lars-Peter Clausen lars@metafoo.de Signed-off-by: Alexandru Ardelean alexandru.ardelean@analog.com Signed-off-by: Felipe Balbi balbi@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/gadget/function/f_fs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index ced2581cf99fe..a9a711e046148 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -1162,18 +1162,19 @@ static int ffs_aio_cancel(struct kiocb *kiocb) { struct ffs_io_data *io_data = kiocb->private; struct ffs_epfile *epfile = kiocb->ki_filp->private_data; + unsigned long flags; int value;

ENTER();

- spin_lock_irq(&epfile->ffs->eps_lock); + spin_lock_irqsave(&epfile->ffs->eps_lock, flags);

if (likely(io_data && io_data->ep && io_data->req)) value = usb_ep_dequeue(io_data->ep, io_data->req); else value = -EINVAL;

- spin_unlock_irq(&epfile->ffs->eps_lock); + spin_unlock_irqrestore(&epfile->ffs->eps_lock, flags);

return value; }

From: Oded Gabbay oded.gabbay@gmail.com

[ Upstream commit 908087ffbe896c100ed73d5f0ce11a5b7264af4a ]

The driver must halt the engines before doing hard-reset, otherwise the device can go into undefined state. There is a place where the driver didn't do that and this patch fixes it.

Reviewed-by: Tomer Tayar ttayar@habana.ai Signed-off-by: Oded Gabbay oded.gabbay@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/misc/habanalabs/device.c | 1 + drivers/misc/habanalabs/goya/goya.c | 42 +++++++++++++++++++++++++++++ 2 files changed, 43 insertions(+)

diff --git a/drivers/misc/habanalabs/device.c b/drivers/misc/habanalabs/device.c index 459fee70a597a..eb9c07833a517 100644 --- a/drivers/misc/habanalabs/device.c +++ b/drivers/misc/habanalabs/device.c @@ -1185,6 +1185,7 @@ int hl_device_init(struct hl_device *hdev, struct class *hclass) if (hdev->asic_funcs->get_hw_state(hdev) == HL_DEVICE_HW_STATE_DIRTY) { dev_info(hdev->dev, "H/W state is dirty, must reset before initializing\n"); + hdev->asic_funcs->halt_engines(hdev, true); hdev->asic_funcs->hw_fini(hdev, true); }

diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c index fe3574a83b7c3..1e97f6d77e3da 100644 --- a/drivers/misc/habanalabs/goya/goya.c +++ b/drivers/misc/habanalabs/goya/goya.c @@ -869,6 +869,11 @@ void goya_init_dma_qmans(struct hl_device *hdev) */ static void goya_disable_external_queues(struct hl_device *hdev) { + struct goya_device *goya = hdev->asic_specific; + + if (!(goya->hw_cap_initialized & HW_CAP_DMA)) + return; + WREG32(mmDMA_QM_0_GLBL_CFG0, 0); WREG32(mmDMA_QM_1_GLBL_CFG0, 0); WREG32(mmDMA_QM_2_GLBL_CFG0, 0); @@ -930,6 +935,11 @@ static int goya_stop_external_queues(struct hl_device *hdev) { int rc, retval = 0;

+ struct goya_device *goya = hdev->asic_specific; + + if (!(goya->hw_cap_initialized & HW_CAP_DMA)) + return retval; + rc = goya_stop_queue(hdev, mmDMA_QM_0_GLBL_CFG1, mmDMA_QM_0_CP_STS, @@ -1719,9 +1729,18 @@ void goya_init_tpc_qmans(struct hl_device *hdev) */ static void goya_disable_internal_queues(struct hl_device *hdev) { + struct goya_device *goya = hdev->asic_specific; + + if (!(goya->hw_cap_initialized & HW_CAP_MME)) + goto disable_tpc; + WREG32(mmMME_QM_GLBL_CFG0, 0); WREG32(mmMME_CMDQ_GLBL_CFG0, 0);

+disable_tpc: + if (!(goya->hw_cap_initialized & HW_CAP_TPC)) + return; + WREG32(mmTPC0_QM_GLBL_CFG0, 0); WREG32(mmTPC0_CMDQ_GLBL_CFG0, 0);

@@ -1757,8 +1776,12 @@ static void goya_disable_internal_queues(struct hl_device *hdev) */ static int goya_stop_internal_queues(struct hl_device *hdev) { + struct goya_device *goya = hdev->asic_specific; int rc, retval = 0;

+ if (!(goya->hw_cap_initialized & HW_CAP_MME)) + goto stop_tpc; + /* * Each queue (QMAN) is a separate H/W logic. That means that each * QMAN can be stopped independently and failure to stop one does NOT @@ -1785,6 +1808,10 @@ static int goya_stop_internal_queues(struct hl_device *hdev) retval = -EIO; }

+stop_tpc: + if (!(goya->hw_cap_initialized & HW_CAP_TPC)) + return retval; + rc = goya_stop_queue(hdev, mmTPC0_QM_GLBL_CFG1, mmTPC0_QM_CP_STS, @@ -1950,6 +1977,11 @@ static int goya_stop_internal_queues(struct hl_device *hdev)

static void goya_dma_stall(struct hl_device *hdev) { + struct goya_device *goya = hdev->asic_specific; + + if (!(goya->hw_cap_initialized & HW_CAP_DMA)) + return; + WREG32(mmDMA_QM_0_GLBL_CFG1, 1 << DMA_QM_0_GLBL_CFG1_DMA_STOP_SHIFT); WREG32(mmDMA_QM_1_GLBL_CFG1, 1 << DMA_QM_1_GLBL_CFG1_DMA_STOP_SHIFT); WREG32(mmDMA_QM_2_GLBL_CFG1, 1 << DMA_QM_2_GLBL_CFG1_DMA_STOP_SHIFT); @@ -1959,6 +1991,11 @@ static void goya_dma_stall(struct hl_device *hdev)

static void goya_tpc_stall(struct hl_device *hdev) { + struct goya_device *goya = hdev->asic_specific; + + if (!(goya->hw_cap_initialized & HW_CAP_TPC)) + return; + WREG32(mmTPC0_CFG_TPC_STALL, 1 << TPC0_CFG_TPC_STALL_V_SHIFT); WREG32(mmTPC1_CFG_TPC_STALL, 1 << TPC1_CFG_TPC_STALL_V_SHIFT); WREG32(mmTPC2_CFG_TPC_STALL, 1 << TPC2_CFG_TPC_STALL_V_SHIFT); @@ -1971,6 +2008,11 @@ static void goya_tpc_stall(struct hl_device *hdev)

static void goya_mme_stall(struct hl_device *hdev) { + struct goya_device *goya = hdev->asic_specific; + + if (!(goya->hw_cap_initialized & HW_CAP_MME)) + return; + WREG32(mmMME_STALL, 0xFFFFFFFF); }

From: Oded Gabbay oded.gabbay@gmail.com

[ Upstream commit cf01514c5c6efa2d521d35e68dff2e0674d08e91 ]

During device memory memset, the driver allocates and use a CB (command buffer). To reuse existing code, it keeps a pointer to the CB in two variables, user_cb and patched_cb. Therefore, there is no need to "put" both the user_cb and patched_cb, as it will cause an underflow of the refcnt of the CB.

Signed-off-by: Oded Gabbay oded.gabbay@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/misc/habanalabs/goya/goya.c | 2 -- 1 file changed, 2 deletions(-)

diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c index 1e97f6d77e3da..13b39fd97429a 100644 --- a/drivers/misc/habanalabs/goya/goya.c +++ b/drivers/misc/habanalabs/goya/goya.c @@ -4666,8 +4666,6 @@ static int goya_memset_device_memory(struct hl_device *hdev, u64 addr, u64 size,

rc = goya_send_job_on_qman0(hdev, job);

- hl_cb_put(job->patched_cb); - hl_debugfs_remove_job(hdev, job); kfree(job); cb->cs_cnt--;

From: John Stultz john.stultz@linaro.org

[ Upstream commit 7fd2dfc3694922eb7ace4801b7208cf9f62ebc7d ]

I was hitting kCFI crashes when building with clang, and after some digging finally narrowed it down to the dsi_mgr_connector_mode_valid() function being implemented as returning an int, instead of an enum drm_mode_status.

This patch fixes it, and appeases the opaque word of the kCFI gods (seriously, clang inlining everything makes the kCFI backtraces only really rough estimates of where things went wrong).

Thanks as always to Sami for his help narrowing this down.

Cc: Rob Clark robdclark@gmail.com Cc: Sean Paul sean@poorly.run Cc: Sami Tolvanen samitolvanen@google.com Cc: Todd Kjos tkjos@google.com Cc: Alistair Delva adelva@google.com Cc: Amit Pundir amit.pundir@linaro.org Cc: Sumit Semwal sumit.semwal@linaro.org Cc: freedreno@lists.freedesktop.org Cc: clang-built-linux@googlegroups.com Signed-off-by: John Stultz john.stultz@linaro.org Reviewed-by: Nick Desaulniers ndesaulniers@google.com Tested-by: Amit Pundir amit.pundir@linaro.org Signed-off-by: Rob Clark robdclark@chromium.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/msm/dsi/dsi_manager.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 271aa7bbca925..355a60b4a536f 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -336,7 +336,7 @@ static int dsi_mgr_connector_get_modes(struct drm_connector *connector) return num; }

-static int dsi_mgr_connector_mode_valid(struct drm_connector *connector, +static enum drm_mode_status dsi_mgr_connector_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { int id = dsi_mgr_connector_get_id(connector);

From: Stephan Gerhold stephan@gerhold.net

[ Upstream commit 5c320b6ce7510653bce68cecf80cf5b2d67e907f ]

At the moment, only DRM_MODE_ROTATE_180 is allowed when we try to apply the rotation from the video mode parameters. It is also useful to allow DRM_MODE_ROTATE_0 in case there is only a reflect option in the video mode parameter (e.g. video=540x960,reflect_x).

DRM_MODE_ROTATE_0 means "no rotation" and should therefore not require any special handling, so we can just add it to the if condition.

Signed-off-by: Stephan Gerhold stephan@gerhold.net Signed-off-by: Maxime Ripard maxime@cerno.tech Link: https://patchwork.freedesktop.org/patch/msgid/20200117153429.54700-3-stephan... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/drm_client_modeset.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c index 12e748b202d6f..18cb88b9105e4 100644 --- a/drivers/gpu/drm/drm_client_modeset.c +++ b/drivers/gpu/drm/drm_client_modeset.c @@ -952,7 +952,8 @@ bool drm_client_rotation(struct drm_mode_set *modeset, unsigned int *rotation) * depending on the hardware this may require the framebuffer * to be in a specific tiling format. */ - if ((*rotation & DRM_MODE_ROTATE_MASK) != DRM_MODE_ROTATE_180 || + if (((*rotation & DRM_MODE_ROTATE_MASK) != DRM_MODE_ROTATE_0 && + (*rotation & DRM_MODE_ROTATE_MASK) != DRM_MODE_ROTATE_180) || !plane->rotation_property) return false;

From: Harigovindan P harigovi@codeaurora.org

[ Upstream commit a1028dcfd0dd97884072288d0c8ed7f30399b528 ]

Save pll state before dsi host is powered off. Without this change some register values gets resetted.

Signed-off-by: Harigovindan P harigovi@codeaurora.org Signed-off-by: Rob Clark robdclark@chromium.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/msm/dsi/dsi_manager.c | 5 +++++ drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 4 ---- 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 355a60b4a536f..73127948f54d9 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -479,6 +479,7 @@ static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge) struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1); struct mipi_dsi_host *host = msm_dsi->host; struct drm_panel *panel = msm_dsi->panel; + struct msm_dsi_pll *src_pll; bool is_dual_dsi = IS_DUAL_DSI(); int ret;

@@ -519,6 +520,10 @@ static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge) id, ret); }

+ /* Save PLL status if it is a clock source */ + src_pll = msm_dsi_phy_get_pll(msm_dsi->phy); + msm_dsi_pll_save_state(src_pll); + ret = msm_dsi_host_power_off(host); if (ret) pr_err("%s: host %d power off failed,%d\n", __func__, id, ret); diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c index 3522863a4984f..21519229fe73a 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c @@ -724,10 +724,6 @@ void msm_dsi_phy_disable(struct msm_dsi_phy *phy) if (!phy || !phy->cfg->ops.disable) return;

- /* Save PLL status if it is a clock source */ - if (phy->usecase != MSM_DSI_PHY_SLAVE) - msm_dsi_pll_save_state(phy->pll); - phy->cfg->ops.disable(phy);

dsi_phy_regulator_disable(phy);

From: Hangbin Liu liuhangbin@gmail.com

[ Upstream commit e8023b030ce1748930e2dc76353a262fe47d4745 ]

For tc ip_proto filter, when we extract the flow via __skb_flow_dissect() without flag FLOW_DISSECTOR_F_STOP_AT_ENCAP, we will continue extract to the inner proto.

So for GRE + ICMP messages, we should not track GRE proto, but inner ICMP proto.

For test mirror_gre.sh, it may make user confused if we capture ICMP message on $h3(since the flow is GRE message). So I move the capture dev to h3-gt{4,6}, and only capture ICMP message.

Before the fix: ]# ./mirror_gre.sh TEST: ingress mirror to gretap (skip_hw) [ OK ] TEST: egress mirror to gretap (skip_hw) [ OK ] TEST: ingress mirror to ip6gretap (skip_hw) [ OK ] TEST: egress mirror to ip6gretap (skip_hw) [ OK ] TEST: ingress mirror to gretap: envelope MAC (skip_hw) [FAIL] Expected to capture 10 packets, got 0. TEST: egress mirror to gretap: envelope MAC (skip_hw) [FAIL] Expected to capture 10 packets, got 0. TEST: ingress mirror to ip6gretap: envelope MAC (skip_hw) [FAIL] Expected to capture 10 packets, got 0. TEST: egress mirror to ip6gretap: envelope MAC (skip_hw) [FAIL] Expected to capture 10 packets, got 0. TEST: two simultaneously configured mirrors (skip_hw) [ OK ] WARN: Could not test offloaded functionality

After fix: ]# ./mirror_gre.sh TEST: ingress mirror to gretap (skip_hw) [ OK ] TEST: egress mirror to gretap (skip_hw) [ OK ] TEST: ingress mirror to ip6gretap (skip_hw) [ OK ] TEST: egress mirror to ip6gretap (skip_hw) [ OK ] TEST: ingress mirror to gretap: envelope MAC (skip_hw) [ OK ] TEST: egress mirror to gretap: envelope MAC (skip_hw) [ OK ] TEST: ingress mirror to ip6gretap: envelope MAC (skip_hw) [ OK ] TEST: egress mirror to ip6gretap: envelope MAC (skip_hw) [ OK ] TEST: two simultaneously configured mirrors (skip_hw) [ OK ] WARN: Could not test offloaded functionality

Fixes: ba8d39871a10 ("selftests: forwarding: Add test for mirror to gretap") Signed-off-by: Hangbin Liu liuhangbin@gmail.com Reviewed-by: Petr Machata pmachata@gmail.com Tested-by: Petr Machata pmachata@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- .../selftests/net/forwarding/mirror_gre.sh | 25 ++++++++++--------- 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/tools/testing/selftests/net/forwarding/mirror_gre.sh b/tools/testing/selftests/net/forwarding/mirror_gre.sh index e6fd7a18c655f..0266443601bc0 100755 --- a/tools/testing/selftests/net/forwarding/mirror_gre.sh +++ b/tools/testing/selftests/net/forwarding/mirror_gre.sh @@ -63,22 +63,23 @@ test_span_gre_mac() { local tundev=$1; shift local direction=$1; shift - local prot=$1; shift local what=$1; shift

- local swp3mac=$(mac_get $swp3) - local h3mac=$(mac_get $h3) + case "$direction" in + ingress) local src_mac=$(mac_get $h1); local dst_mac=$(mac_get $h2) + ;; + egress) local src_mac=$(mac_get $h2); local dst_mac=$(mac_get $h1) + ;; + esac

RET=0

mirror_install $swp1 $direction $tundev "matchall $tcflags" - tc filter add dev $h3 ingress pref 77 prot $prot \ - flower ip_proto 0x2f src_mac $swp3mac dst_mac $h3mac \ - action pass + icmp_capture_install h3-${tundev} "src_mac $src_mac dst_mac $dst_mac"

- mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 10 + mirror_test v$h1 192.0.2.1 192.0.2.2 h3-${tundev} 100 10

- tc filter del dev $h3 ingress pref 77 + icmp_capture_uninstall h3-${tundev} mirror_uninstall $swp1 $direction

log_test "$direction $what: envelope MAC ($tcflags)" @@ -120,14 +121,14 @@ test_ip6gretap()

test_gretap_mac() { - test_span_gre_mac gt4 ingress ip "mirror to gretap" - test_span_gre_mac gt4 egress ip "mirror to gretap" + test_span_gre_mac gt4 ingress "mirror to gretap" + test_span_gre_mac gt4 egress "mirror to gretap" }

test_ip6gretap_mac() { - test_span_gre_mac gt6 ingress ipv6 "mirror to ip6gretap" - test_span_gre_mac gt6 egress ipv6 "mirror to ip6gretap" + test_span_gre_mac gt6 ingress "mirror to ip6gretap" + test_span_gre_mac gt6 egress "mirror to ip6gretap" }

test_all()

From: Igor Russkikh irusskikh@marvell.com

[ Upstream commit e7b5f97e6574dc4918e375d5f8d24ec31653cd6d ]

Artificial HW reliability tests revealed a possible hangup in the driver. Normally, when device disappears from bus, all register reads returns 0xFFFFFFFF.

At remote procedure invocation towards FW there is a logic where result is compared with -1 in a loop. That caused an infinite loop if hardware due to some issues disappears from bus.

Add extra result checks to prevent this.

Signed-off-by: Dmitry Bogdanov dbogdanov@marvell.com Signed-off-by: Igor Russkikh irusskikh@marvell.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- .../aquantia/atlantic/hw_atl/hw_atl_utils.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c index 52646855495ed..873f9865f0d15 100644 --- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c +++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c @@ -22,6 +22,7 @@ #define HW_ATL_MIF_ADDR 0x0208U #define HW_ATL_MIF_VAL 0x020CU

+#define HW_ATL_MPI_RPC_ADDR 0x0334U #define HW_ATL_RPC_CONTROL_ADR 0x0338U #define HW_ATL_RPC_STATE_ADR 0x033CU

@@ -48,15 +49,14 @@ #define FORCE_FLASHLESS 0

static int hw_atl_utils_ver_match(u32 ver_expected, u32 ver_actual); - static int hw_atl_utils_mpi_set_state(struct aq_hw_s *self, enum hal_atl_utils_fw_state_e state); - static u32 hw_atl_utils_get_mpi_mbox_tid(struct aq_hw_s *self); static u32 hw_atl_utils_mpi_get_state(struct aq_hw_s *self); static u32 hw_atl_utils_mif_cmd_get(struct aq_hw_s *self); static u32 hw_atl_utils_mif_addr_get(struct aq_hw_s *self); static u32 hw_atl_utils_rpc_state_get(struct aq_hw_s *self); +static u32 aq_fw1x_rpc_get(struct aq_hw_s *self);

int hw_atl_utils_initfw(struct aq_hw_s *self, const struct aq_fw_ops **fw_ops) { @@ -413,6 +413,10 @@ static int hw_atl_utils_init_ucp(struct aq_hw_s *self, self, self->mbox_addr, self->mbox_addr != 0U, 1000U, 10000U); + err = readx_poll_timeout_atomic(aq_fw1x_rpc_get, self, + self->rpc_addr, + self->rpc_addr != 0U, + 1000U, 100000U);

return err; } @@ -469,6 +473,12 @@ int hw_atl_utils_fw_rpc_wait(struct aq_hw_s *self, self, fw.val, sw.tid == fw.tid, 1000U, 100000U); + if (err < 0) + goto err_exit; + + err = aq_hw_err_from_flags(self); + if (err < 0) + goto err_exit;

if (fw.len == 0xFFFFU) { err = hw_atl_utils_fw_rpc_call(self, sw.len); @@ -950,6 +960,11 @@ static u32 hw_atl_utils_rpc_state_get(struct aq_hw_s *self) return aq_hw_read_reg(self, HW_ATL_RPC_STATE_ADR); }

+static u32 aq_fw1x_rpc_get(struct aq_hw_s *self) +{ + return aq_hw_read_reg(self, HW_ATL_MPI_RPC_ADDR); +} + const struct aq_fw_ops aq_fw_1x_ops = { .init = hw_atl_utils_mpi_create, .deinit = hw_atl_fw1x_deinit,

From: Marek Vasut marex@denx.de

[ Upstream commit edacb098ea9c31589276152f09b4439052c0f2b1 ]

The packet data written to and read from Micrel KSZ8851-16MLLI must be byte-swapped in 16-bit mode, add this byte-swapping.

Signed-off-by: Marek Vasut marex@denx.de Cc: David S. Miller davem@davemloft.net Cc: Lukas Wunner lukas@wunner.de Cc: Petr Stetiar ynezz@true.cz Cc: YueHaibing yuehaibing@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/micrel/ks8851_mll.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/micrel/ks8851_mll.c b/drivers/net/ethernet/micrel/ks8851_mll.c index e2fb20154511e..5ae206ae5d2b3 100644 --- a/drivers/net/ethernet/micrel/ks8851_mll.c +++ b/drivers/net/ethernet/micrel/ks8851_mll.c @@ -197,7 +197,7 @@ static inline void ks_inblk(struct ks_net *ks, u16 *wptr, u32 len) { len >>= 1; while (len--) - *wptr++ = (u16)ioread16(ks->hw_addr); + *wptr++ = be16_to_cpu(ioread16(ks->hw_addr)); }

/** @@ -211,7 +211,7 @@ static inline void ks_outblk(struct ks_net *ks, u16 *wptr, u32 len) { len >>= 1; while (len--) - iowrite16(*wptr++, ks->hw_addr); + iowrite16(cpu_to_be16(*wptr++), ks->hw_addr); }

static void ks_disable_int(struct ks_net *ks)

From: Paul Cercueil paul@crapouillou.net

[ Upstream commit 9a6a0dea16177ccaecc116f560232e63bec115f1 ]

The call to of_get_mac_address() can return -EPROBE_DEFER, for instance when the MAC address is read from a NVMEM driver that did not probe yet.

Cc: H. Nikolaus Schaller hns@goldelico.com Cc: Mathieu Malaterre malat@debian.org Signed-off-by: Paul Cercueil paul@crapouillou.net Reviewed-by: Andrew Lunn andrew@lunn.ch Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/davicom/dm9000.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c index cce90b5925d93..70060c51854fd 100644 --- a/drivers/net/ethernet/davicom/dm9000.c +++ b/drivers/net/ethernet/davicom/dm9000.c @@ -1405,6 +1405,8 @@ static struct dm9000_plat_data *dm9000_parse_dt(struct device *dev) mac_addr = of_get_mac_address(np); if (!IS_ERR(mac_addr)) ether_addr_copy(pdata->dev_addr, mac_addr); + else if (PTR_ERR(mac_addr) == -EPROBE_DEFER) + return ERR_CAST(mac_addr);

return pdata; }

From: Vasily Averin vvs@virtuozzo.com

[ Upstream commit 8b101a5e14f2161869636ff9cb4907b7749dc0c2 ]

if seq_file .next fuction does not change position index, read after some lseek can generate unexpected output.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=206283 Link: https://lore.kernel.org/r/d44c53a7-9bc1-15c7-6d4a-0c10cb9dffce@virtuozzo.com Reviewed-by: Cornelia Huck cohuck@redhat.com Signed-off-by: Christian Borntraeger borntraeger@de.ibm.com Signed-off-by: Vasily Averin vvs@virtuozzo.com Signed-off-by: Vasily Gorbik gor@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/s390/cio/blacklist.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c index 2a3f874a21d54..9cebff8e8d740 100644 --- a/drivers/s390/cio/blacklist.c +++ b/drivers/s390/cio/blacklist.c @@ -303,8 +303,10 @@ static void * cio_ignore_proc_seq_next(struct seq_file *s, void *it, loff_t *offset) { struct ccwdev_iter *iter; + loff_t p = *offset;

- if (*offset >= (__MAX_SUBCHANNEL + 1) * (__MAX_SSID + 1)) + (*offset)++; + if (p >= (__MAX_SUBCHANNEL + 1) * (__MAX_SSID + 1)) return NULL; iter = it; if (iter->devno == __MAX_SUBCHANNEL) { @@ -314,7 +316,6 @@ cio_ignore_proc_seq_next(struct seq_file *s, void *it, loff_t *offset) return NULL; } else iter->devno++; - (*offset)++; return iter; }

From: Javier Martinez Canillas javierm@redhat.com

[ Upstream commit 3be54d558c75562e42bc83d665df024bd79d399b ]

If CONFIG_LOAD_UEFI_KEYS is enabled, the kernel attempts to load the certs from the db, dbx and MokListRT EFI variables into the appropriate keyrings.

But it just assumes that the variables will be present and prints an error if the certs can't be loaded, even when is possible that the variables may not exist. For example the MokListRT variable will only be present if shim is used.

So only print an error message about failing to get the certs list from an EFI variable if this is found. Otherwise these printed errors just pollute the kernel log ring buffer with confusing messages like the following:

[ 5.427251] Couldn't get size: 0x800000000000000e [ 5.427261] MODSIGN: Couldn't get UEFI db list [ 5.428012] Couldn't get size: 0x800000000000000e [ 5.428023] Couldn't get UEFI MokListRT

Reported-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Javier Martinez Canillas javierm@redhat.com Tested-by: Hans de Goede hdegoede@redhat.com Acked-by: Ard Biesheuvel ardb@kernel.org Signed-off-by: Mimi Zohar zohar@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- security/integrity/platform_certs/load_uefi.c | 40 ++++++++++++------- 1 file changed, 26 insertions(+), 14 deletions(-)

diff --git a/security/integrity/platform_certs/load_uefi.c b/security/integrity/platform_certs/load_uefi.c index 81b19c52832ba..020fc7a11ef0e 100644 --- a/security/integrity/platform_certs/load_uefi.c +++ b/security/integrity/platform_certs/load_uefi.c @@ -39,16 +39,18 @@ static __init bool uefi_check_ignore_db(void) * Get a certificate list blob from the named EFI variable. */ static __init void *get_cert_list(efi_char16_t *name, efi_guid_t *guid, - unsigned long *size) + unsigned long *size, efi_status_t *status) { - efi_status_t status; unsigned long lsize = 4; unsigned long tmpdb[4]; void *db;

- status = efi.get_variable(name, guid, NULL, &lsize, &tmpdb); - if (status != EFI_BUFFER_TOO_SMALL) { - pr_err("Couldn't get size: 0x%lx\n", status); + *status = efi.get_variable(name, guid, NULL, &lsize, &tmpdb); + if (*status == EFI_NOT_FOUND) + return NULL; + + if (*status != EFI_BUFFER_TOO_SMALL) { + pr_err("Couldn't get size: 0x%lx\n", *status); return NULL; }

@@ -56,10 +58,10 @@ static __init void *get_cert_list(efi_char16_t *name, efi_guid_t *guid, if (!db) return NULL;

- status = efi.get_variable(name, guid, NULL, &lsize, db); - if (status != EFI_SUCCESS) { + *status = efi.get_variable(name, guid, NULL, &lsize, db); + if (*status != EFI_SUCCESS) { kfree(db); - pr_err("Error reading db var: 0x%lx\n", status); + pr_err("Error reading db var: 0x%lx\n", *status); return NULL; }

@@ -144,6 +146,7 @@ static int __init load_uefi_certs(void) efi_guid_t mok_var = EFI_SHIM_LOCK_GUID; void *db = NULL, *dbx = NULL, *mok = NULL; unsigned long dbsize = 0, dbxsize = 0, moksize = 0; + efi_status_t status; int rc = 0;

if (!efi.get_variable) @@ -153,9 +156,12 @@ static int __init load_uefi_certs(void) * an error if we can't get them. */ if (!uefi_check_ignore_db()) { - db = get_cert_list(L"db", &secure_var, &dbsize); + db = get_cert_list(L"db", &secure_var, &dbsize, &status); if (!db) { - pr_err("MODSIGN: Couldn't get UEFI db list\n"); + if (status == EFI_NOT_FOUND) + pr_debug("MODSIGN: db variable wasn't found\n"); + else + pr_err("MODSIGN: Couldn't get UEFI db list\n"); } else { rc = parse_efi_signature_list("UEFI:db", db, dbsize, get_handler_for_db); @@ -166,9 +172,12 @@ static int __init load_uefi_certs(void) } }

- mok = get_cert_list(L"MokListRT", &mok_var, &moksize); + mok = get_cert_list(L"MokListRT", &mok_var, &moksize, &status); if (!mok) { - pr_info("Couldn't get UEFI MokListRT\n"); + if (status == EFI_NOT_FOUND) + pr_debug("MokListRT variable wasn't found\n"); + else + pr_info("Couldn't get UEFI MokListRT\n"); } else { rc = parse_efi_signature_list("UEFI:MokListRT", mok, moksize, get_handler_for_db); @@ -177,9 +186,12 @@ static int __init load_uefi_certs(void) kfree(mok); }

- dbx = get_cert_list(L"dbx", &secure_var, &dbxsize); + dbx = get_cert_list(L"dbx", &secure_var, &dbxsize, &status); if (!dbx) { - pr_info("Couldn't get UEFI dbx list\n"); + if (status == EFI_NOT_FOUND) + pr_debug("dbx variable wasn't found\n"); + else + pr_info("Couldn't get UEFI dbx list\n"); } else { rc = parse_efi_signature_list("UEFI:dbx", dbx, dbxsize,

From: Kai-Heng Feng kai.heng.feng@canonical.com

[ Upstream commit 3dfee47b215e49788cfc80e474820ea2e948c031 ]

Serious screen flickering when Stoney Ridge outputs to a 4K monitor.

Use identity-mapping and PCI ATS doesn't help this issue.

According to Alex Deucher, IOMMU isn't enabled on Windows, so let's do the same here to avoid screen flickering on 4K monitor.

Cc: Alex Deucher alexander.deucher@amd.com Bug: https://gitlab.freedesktop.org/drm/amd/issues/961 Signed-off-by: Kai-Heng Feng kai.heng.feng@canonical.com Acked-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Joerg Roedel jroedel@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iommu/amd_iommu_init.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index d7cbca8bf2cd4..b5ae9f7c0510b 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -2533,6 +2533,7 @@ static int __init early_amd_iommu_init(void) struct acpi_table_header *ivrs_base; acpi_status status; int i, remap_cache_sz, ret = 0; + u32 pci_id;

if (!amd_iommu_detected) return -ENODEV; @@ -2620,6 +2621,16 @@ static int __init early_amd_iommu_init(void) if (ret) goto out;

+ /* Disable IOMMU if there's Stoney Ridge graphics */ + for (i = 0; i < 32; i++) { + pci_id = read_pci_config(0, i, 0, 0); + if ((pci_id & 0xffff) == 0x1002 && (pci_id >> 16) == 0x98e4) { + pr_info("Disable IOMMU on Stoney Ridge\n"); + amd_iommu_disabled = true; + break; + } + } + /* Disable any previously enabled IOMMUs */ if (!is_kdump_kernel() || amd_iommu_disabled) disable_iommus(); @@ -2728,7 +2739,7 @@ static int __init state_next(void) ret = early_amd_iommu_init(); init_state = ret ? IOMMU_INIT_ERROR : IOMMU_ACPI_FINISHED; if (init_state == IOMMU_ACPI_FINISHED && amd_iommu_disabled) { - pr_info("AMD IOMMU disabled on kernel command-line\n"); + pr_info("AMD IOMMU disabled\n"); init_state = IOMMU_CMDLINE_DISABLED; ret = -EINVAL; }

From: Andy Shevchenko andriy.shevchenko@linux.intel.com

[ Upstream commit 98f7b86a0becc1154b1a6df6e75c9695dfd87e0d ]

People reported that old Apple machines are not working properly if the non-first IRQ vector is in use.

Set quirk for that models to limit IRQ to use first vector only.

Based on original patch by GitHub user npx001.

Link: https://github.com/Dunedan/mbp-2016-linux/issues/9 Cc: Benjamin Herrenschmidt benh@kernel.crashing.org Cc: Leif Liddy leif.liddy@gmail.com Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Keith Busch kbusch@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/host/pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index c8e55674cf937..cd64ddb129e5b 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -3126,7 +3126,8 @@ static const struct pci_device_id nvme_id_table[] = { .driver_data = NVME_QUIRK_NO_DEEPEST_PS | NVME_QUIRK_IGNORE_DEV_SUBNQN, }, { PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_EXPRESS, 0xffffff) }, - { PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2001) }, + { PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2001), + .driver_data = NVME_QUIRK_SINGLE_VECTOR }, { PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2003) }, { PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2005), .driver_data = NVME_QUIRK_SINGLE_VECTOR |

From: Julian Wiedmann jwi@linux.ibm.com

[ Upstream commit e9091ffd6a0aaced111b5d6ead5eaab5cd7101bc ]

As the comment says, sl->sbal holds an absolute address. qeth currently solves this through wild casting, while zfcp doesn't care.

Handle this properly in the code that actually builds the SL.

Signed-off-by: Julian Wiedmann jwi@linux.ibm.com Reviewed-by: Alexandra Winter wintera@linux.ibm.com Reviewed-by: Steffen Maier maier@linux.ibm.com [for qdio] Reviewed-by: Benjamin Block bblock@linux.ibm.com Signed-off-by: Vasily Gorbik gor@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/s390/include/asm/qdio.h | 2 +- drivers/s390/cio/qdio_setup.c | 3 ++- drivers/s390/net/qeth_core_main.c | 23 +++++++++++------------ 3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h index e3f238e8c6116..4f35b1055f30a 100644 --- a/arch/s390/include/asm/qdio.h +++ b/arch/s390/include/asm/qdio.h @@ -227,7 +227,7 @@ struct qdio_buffer { * @sbal: absolute SBAL address */ struct sl_element { - unsigned long sbal; + u64 sbal; } __attribute__ ((packed));

/** diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index cd164886132fd..ee0b3c5862110 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/drivers/s390/cio/qdio_setup.c @@ -8,6 +8,7 @@ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/export.h> +#include <linux/io.h> #include <asm/qdio.h>

#include "cio.h" @@ -207,7 +208,7 @@ static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr,

/* fill in sl */ for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) - q->sl->element[j].sbal = (unsigned long)q->sbal[j]; + q->sl->element[j].sbal = virt_to_phys(q->sbal[j]); }

static void setup_queues(struct qdio_irq *irq_ptr, diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 23852888eb2ca..b727d1e34523e 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -4716,10 +4716,10 @@ static void qeth_qdio_establish_cq(struct qeth_card *card, if (card->options.cq == QETH_CQ_ENABLED) { int offset = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1); - for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { - in_sbal_ptrs[offset + i] = (struct qdio_buffer *) - virt_to_phys(card->qdio.c_q->bufs[i].buffer); - } + + for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) + in_sbal_ptrs[offset + i] = + card->qdio.c_q->bufs[i].buffer;

queue_start_poll[card->qdio.no_in_queues - 1] = NULL; } @@ -4753,10 +4753,9 @@ static int qeth_qdio_establish(struct qeth_card *card) rc = -ENOMEM; goto out_free_qib_param; } - for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { - in_sbal_ptrs[i] = (struct qdio_buffer *) - virt_to_phys(card->qdio.in_q->bufs[i].buffer); - } + + for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) + in_sbal_ptrs[i] = card->qdio.in_q->bufs[i].buffer;

queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *), GFP_KERNEL); @@ -4777,11 +4776,11 @@ static int qeth_qdio_establish(struct qeth_card *card) rc = -ENOMEM; goto out_free_queue_start_poll; } + for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) - for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { - out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( - card->qdio.out_qs[i]->bufs[j]->buffer); - } + for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++, k++) + out_sbal_ptrs[k] = + card->qdio.out_qs[i]->bufs[j]->buffer;

memset(&init_data, 0, sizeof(struct qdio_initialize)); init_data.cdev = CARD_DDEV(card);

From: Michal Swiatkowski michal.swiatkowski@intel.com

[ Upstream commit 8a55c08d3bbc9ffc9639f69f742e59ebd99f913b ]

Remove code that tell the OS that link is going down when user change flow control via ethtool. When link is up it isn't certain that link goes down after 0x0605 aq command. If link doesn't go down, OS thinks that link is down, but physical link is up. To reset this state user have to take interface down and up.

If link goes down after 0x0605 command, FW send information about that and after that driver tells the OS that the link goes down. So this code in ethtool is unnecessary.

Signed-off-by: Michal Swiatkowski michal.swiatkowski@intel.com Tested-by: Andrew Bowers andrewx.bowers@intel.com Signed-off-by: Jeff Kirsher jeffrey.t.kirsher@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/intel/ice/ice_ethtool.c | 7 ------- 1 file changed, 7 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c index 1fe9f6050635d..62673e27af0e8 100644 --- a/drivers/net/ethernet/intel/ice/ice_ethtool.c +++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c @@ -2916,13 +2916,6 @@ ice_set_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *pause) else return -EINVAL;

- /* Tell the OS link is going down, the link will go back up when fw - * says it is ready asynchronously - */ - ice_print_link_msg(vsi, false); - netif_carrier_off(netdev); - netif_tx_stop_all_queues(netdev); - /* Set the FC mode and only restart AN if link is up */ status = ice_set_fc(pi, &aq_failures, link_up);

From: Tim Harvey tharvey@gateworks.com

[ Upstream commit 971617c3b761c876d686a2188220a33898c90e99 ]

While it is not yet understood why a TX underflow can easily occur for SGMII interfaces resulting in a TX wedge. It has been found that disabling/re-enabling the LMAC resolves the issue.

Signed-off-by: Tim Harvey tharvey@gateworks.com Reviewed-by: Robert Jones rjones@gateworks.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/ethernet/cavium/thunder/thunder_bgx.c | 62 ++++++++++++++++++- .../net/ethernet/cavium/thunder/thunder_bgx.h | 9 +++ 2 files changed, 68 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c index 6cc100e7d5c07..76ff42ec3ae5e 100644 --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c @@ -410,10 +410,19 @@ void bgx_lmac_rx_tx_enable(int node, int bgx_idx, int lmacid, bool enable) lmac = &bgx->lmac[lmacid];

cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); - if (enable) + if (enable) { cfg |= CMR_PKT_RX_EN | CMR_PKT_TX_EN; - else + + /* enable TX FIFO Underflow interrupt */ + bgx_reg_modify(bgx, lmacid, BGX_GMP_GMI_TXX_INT_ENA_W1S, + GMI_TXX_INT_UNDFLW); + } else { cfg &= ~(CMR_PKT_RX_EN | CMR_PKT_TX_EN); + + /* Disable TX FIFO Underflow interrupt */ + bgx_reg_modify(bgx, lmacid, BGX_GMP_GMI_TXX_INT_ENA_W1C, + GMI_TXX_INT_UNDFLW); + } bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg);

if (bgx->is_rgx) @@ -1535,6 +1544,48 @@ static int bgx_init_phy(struct bgx *bgx) return bgx_init_of_phy(bgx); }

+static irqreturn_t bgx_intr_handler(int irq, void *data) +{ + struct bgx *bgx = (struct bgx *)data; + u64 status, val; + int lmac; + + for (lmac = 0; lmac < bgx->lmac_count; lmac++) { + status = bgx_reg_read(bgx, lmac, BGX_GMP_GMI_TXX_INT); + if (status & GMI_TXX_INT_UNDFLW) { + pci_err(bgx->pdev, "BGX%d lmac%d UNDFLW\n", + bgx->bgx_id, lmac); + val = bgx_reg_read(bgx, lmac, BGX_CMRX_CFG); + val &= ~CMR_EN; + bgx_reg_write(bgx, lmac, BGX_CMRX_CFG, val); + val |= CMR_EN; + bgx_reg_write(bgx, lmac, BGX_CMRX_CFG, val); + } + /* clear interrupts */ + bgx_reg_write(bgx, lmac, BGX_GMP_GMI_TXX_INT, status); + } + + return IRQ_HANDLED; +} + +static void bgx_register_intr(struct pci_dev *pdev) +{ + struct bgx *bgx = pci_get_drvdata(pdev); + int ret; + + ret = pci_alloc_irq_vectors(pdev, BGX_LMAC_VEC_OFFSET, + BGX_LMAC_VEC_OFFSET, PCI_IRQ_ALL_TYPES); + if (ret < 0) { + pci_err(pdev, "Req for #%d msix vectors failed\n", + BGX_LMAC_VEC_OFFSET); + return; + } + ret = pci_request_irq(pdev, GMPX_GMI_TX_INT, bgx_intr_handler, NULL, + bgx, "BGX%d", bgx->bgx_id); + if (ret) + pci_free_irq(pdev, GMPX_GMI_TX_INT, bgx); +} + static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { int err; @@ -1550,7 +1601,7 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)

pci_set_drvdata(pdev, bgx);

- err = pci_enable_device(pdev); + err = pcim_enable_device(pdev); if (err) { dev_err(dev, "Failed to enable PCI device\n"); pci_set_drvdata(pdev, NULL); @@ -1604,6 +1655,8 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)

bgx_init_hw(bgx);

+ bgx_register_intr(pdev); + /* Enable all LMACs */ for (lmac = 0; lmac < bgx->lmac_count; lmac++) { err = bgx_lmac_enable(bgx, lmac); @@ -1620,6 +1673,7 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)

err_enable: bgx_vnic[bgx->bgx_id] = NULL; + pci_free_irq(pdev, GMPX_GMI_TX_INT, bgx); err_release_regions: pci_release_regions(pdev); err_disable_device: @@ -1637,6 +1691,8 @@ static void bgx_remove(struct pci_dev *pdev) for (lmac = 0; lmac < bgx->lmac_count; lmac++) bgx_lmac_disable(bgx, lmac);

+ pci_free_irq(pdev, GMPX_GMI_TX_INT, bgx); + bgx_vnic[bgx->bgx_id] = NULL; pci_release_regions(pdev); pci_disable_device(pdev); diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h index 25888706bdcd1..cdea493921857 100644 --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h @@ -180,6 +180,15 @@ #define BGX_GMP_GMI_TXX_BURST 0x38228 #define BGX_GMP_GMI_TXX_MIN_PKT 0x38240 #define BGX_GMP_GMI_TXX_SGMII_CTL 0x38300 +#define BGX_GMP_GMI_TXX_INT 0x38500 +#define BGX_GMP_GMI_TXX_INT_W1S 0x38508 +#define BGX_GMP_GMI_TXX_INT_ENA_W1C 0x38510 +#define BGX_GMP_GMI_TXX_INT_ENA_W1S 0x38518 +#define GMI_TXX_INT_PTP_LOST BIT_ULL(4) +#define GMI_TXX_INT_LATE_COL BIT_ULL(3) +#define GMI_TXX_INT_XSDEF BIT_ULL(2) +#define GMI_TXX_INT_XSCOL BIT_ULL(1) +#define GMI_TXX_INT_UNDFLW BIT_ULL(0)

#define BGX_MSIX_VEC_0_29_ADDR 0x400000 /* +(0..29) << 4 */ #define BGX_MSIX_VEC_0_29_CTL 0x400008

From: Guo Ren guoren@linux.alibaba.com

[ Upstream commit f8e17c17b81070f38062dce79ca7f4541851dadd ]

In the past, we didn't care about kernel sp when saving pt_reg. But in some cases, we still need pt_reg->usp to represent the kernel stack before enter exception.

For cmpxhg in atomic.S, we need save and restore usp for above.

Signed-off-by: Guo Ren guoren@linux.alibaba.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/csky/abiv1/inc/abi/entry.h | 19 ++++++++++++++----- arch/csky/abiv2/inc/abi/entry.h | 11 +++++++++++ arch/csky/kernel/atomic.S | 8 ++++++-- 3 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/arch/csky/abiv1/inc/abi/entry.h b/arch/csky/abiv1/inc/abi/entry.h index 7ab78bd0f3b13..f35a9f3315ee6 100644 --- a/arch/csky/abiv1/inc/abi/entry.h +++ b/arch/csky/abiv1/inc/abi/entry.h @@ -16,14 +16,16 @@ #define LSAVE_A4 40 #define LSAVE_A5 44

+#define usp ss1 + .macro USPTOKSP - mtcr sp, ss1 + mtcr sp, usp mfcr sp, ss0 .endm

.macro KSPTOUSP mtcr sp, ss0 - mfcr sp, ss1 + mfcr sp, usp .endm

.macro SAVE_ALL epc_inc @@ -45,7 +47,13 @@ add lr, r13 stw lr, (sp, 8)

+ mov lr, sp + addi lr, 32 + addi lr, 32 + addi lr, 16 + bt 2f mfcr lr, ss1 +2: stw lr, (sp, 16)

stw a0, (sp, 20) @@ -79,9 +87,10 @@ ldw a0, (sp, 12) mtcr a0, epsr btsti a0, 31 + bt 1f ldw a0, (sp, 16) mtcr a0, ss1 - +1: ldw a0, (sp, 24) ldw a1, (sp, 28) ldw a2, (sp, 32) @@ -102,9 +111,9 @@ addi sp, 32 addi sp, 8

- bt 1f + bt 2f KSPTOUSP -1: +2: rte .endm

diff --git a/arch/csky/abiv2/inc/abi/entry.h b/arch/csky/abiv2/inc/abi/entry.h index 9897a16b45e5d..94a7a58765dff 100644 --- a/arch/csky/abiv2/inc/abi/entry.h +++ b/arch/csky/abiv2/inc/abi/entry.h @@ -31,7 +31,13 @@

mfcr lr, epsr stw lr, (sp, 12) + btsti lr, 31 + bf 1f + addi lr, sp, 152 + br 2f +1: mfcr lr, usp +2: stw lr, (sp, 16)

stw a0, (sp, 20) @@ -64,8 +70,10 @@ mtcr a0, epc ldw a0, (sp, 12) mtcr a0, epsr + btsti a0, 31 ldw a0, (sp, 16) mtcr a0, usp + mtcr a0, ss0

#ifdef CONFIG_CPU_HAS_HILO ldw a0, (sp, 140) @@ -86,6 +94,9 @@ addi sp, 40 ldm r16-r30, (sp) addi sp, 72 + bf 1f + mfcr sp, ss0 +1: rte .endm

diff --git a/arch/csky/kernel/atomic.S b/arch/csky/kernel/atomic.S index 5b84f11485aeb..3821ef9b75672 100644 --- a/arch/csky/kernel/atomic.S +++ b/arch/csky/kernel/atomic.S @@ -17,10 +17,12 @@ ENTRY(csky_cmpxchg) mfcr a3, epc addi a3, TRAP0_SIZE

- subi sp, 8 + subi sp, 16 stw a3, (sp, 0) mfcr a3, epsr stw a3, (sp, 4) + mfcr a3, usp + stw a3, (sp, 8)

psrset ee #ifdef CONFIG_CPU_HAS_LDSTEX @@ -47,7 +49,9 @@ ENTRY(csky_cmpxchg) mtcr a3, epc ldw a3, (sp, 4) mtcr a3, epsr - addi sp, 8 + ldw a3, (sp, 8) + mtcr a3, usp + addi sp, 16 KSPTOUSP rte END(csky_cmpxchg)

From: Guo Ren guoren@linux.alibaba.com

[ Upstream commit 359ae00d12589c31cf103894d0f32588d523ca83 ]

During ftrace init, linux will replace all function prologues (call_mcout) with nops, but it need flush_dcache and invalidate_icache to make it work. So flush_cache functions couldn't be nested called by ftrace framework.

Signed-off-by: Guo Ren guoren@linux.alibaba.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/csky/mm/Makefile | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/arch/csky/mm/Makefile b/arch/csky/mm/Makefile index c94ef64810986..efb7ebab342b3 100644 --- a/arch/csky/mm/Makefile +++ b/arch/csky/mm/Makefile @@ -1,8 +1,10 @@ # SPDX-License-Identifier: GPL-2.0-only ifeq ($(CONFIG_CPU_HAS_CACHEV2),y) obj-y += cachev2.o +CFLAGS_REMOVE_cachev2.o = $(CC_FLAGS_FTRACE) else obj-y += cachev1.o +CFLAGS_REMOVE_cachev1.o = $(CC_FLAGS_FTRACE) endif

obj-y += dma-mapping.o

From: Randy Dunlap rdunlap@infradead.org

[ Upstream commit bebd26ab623616728d6e72b5c74a47bfff5287d8 ]

Fix wording in help text for the CPU_HAS_LDSTEX symbol.

Signed-off-by: Randy Dunlap rdunlap@infradead.org Signed-off-by: Guo Ren guoren@kernel.org Signed-off-by: Guo Ren guoren@linux.alibaba.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/csky/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index 3973847b5f42e..25de20e526e50 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -74,7 +74,7 @@ config CPU_HAS_TLBI config CPU_HAS_LDSTEX bool help - For SMP, CPU needs "ldex&stex" instrcutions to atomic operations. + For SMP, CPU needs "ldex&stex" instructions for atomic operations.

config CPU_NEED_TLBSYNC bool

From: Leonard Crestez leonard.crestez@nxp.com

commit 26d0fba29c96241de8a9d16f045b1de49875884c upstream.

SCU requires that all messages words are written sequentially but linux MU driver implements multiple independent channels for each register so ordering between different channels must be ensured by SCU API interface.

Wait for tx_done before every send to ensure that no queueing happens at the mailbox channel level.

Fixes: edbee095fafb ("firmware: imx: add SCU firmware driver support") Signed-off-by: Leonard Crestez leonard.crestez@nxp.com Cc: stable@vger.kernel.org Reviewed-by: Peng Fan peng.fan@nxp.com Reviewed-by:: Oleksij Rempel o.rempel@pengutronix.de Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/firmware/imx/imx-scu.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)

--- a/drivers/firmware/imx/imx-scu.c +++ b/drivers/firmware/imx/imx-scu.c @@ -29,6 +29,7 @@ struct imx_sc_chan { struct mbox_client cl; struct mbox_chan *ch; int idx; + struct completion tx_done; };

struct imx_sc_ipc { @@ -100,6 +101,14 @@ int imx_scu_get_handle(struct imx_sc_ipc } EXPORT_SYMBOL(imx_scu_get_handle);

+/* Callback called when the word of a message is ack-ed, eg read by SCU */ +static void imx_scu_tx_done(struct mbox_client *cl, void *mssg, int r) +{ + struct imx_sc_chan *sc_chan = container_of(cl, struct imx_sc_chan, cl); + + complete(&sc_chan->tx_done); +} + static void imx_scu_rx_callback(struct mbox_client *c, void *msg) { struct imx_sc_chan *sc_chan = container_of(c, struct imx_sc_chan, cl); @@ -143,6 +152,19 @@ static int imx_scu_ipc_write(struct imx_

for (i = 0; i < hdr->size; i++) { sc_chan = &sc_ipc->chans[i % 4]; + + /* + * SCU requires that all messages words are written + * sequentially but linux MU driver implements multiple + * independent channels for each register so ordering between + * different channels must be ensured by SCU API interface. + * + * Wait for tx_done before every send to ensure that no + * queueing happens at the mailbox channel level. + */ + wait_for_completion(&sc_chan->tx_done); + reinit_completion(&sc_chan->tx_done); + ret = mbox_send_message(sc_chan->ch, &data[i]); if (ret < 0) return ret; @@ -225,6 +247,11 @@ static int imx_scu_probe(struct platform cl->knows_txdone = true; cl->rx_callback = imx_scu_rx_callback;

+ /* Initial tx_done completion as "done" */ + cl->tx_done = imx_scu_tx_done; + init_completion(&sc_chan->tx_done); + complete(&sc_chan->tx_done); + sc_chan->sc_ipc = sc_ipc; sc_chan->idx = i % 4; sc_chan->ch = mbox_request_channel_byname(cl, chan_name);

From: Christian Brauner christian.brauner@ubuntu.com

commit f0fe2c0f050d31babcad7d65f1d550d462a40064 upstream.

This is a necessary follow up to the first fix I proposed and we merged in 2669b8b0c79 ("binder: prevent UAF for binderfs devices"). I have been overly optimistic that the simple fix I proposed would work. But alas, ihold() + iput() won't work since the inodes won't survive the destruction of the superblock. So all we get with my prior fix is a different race with a tinier race-window but it doesn't solve the issue. Fwiw, the problem lies with generic_shutdown_super(). It even has this cozy Al-style comment:

if (!list_empty(&sb->s_inodes)) { printk("VFS: Busy inodes after unmount of %s. " "Self-destruct in 5 seconds. Have a nice day...\n", sb->s_id); }

On binder_release(), binder_defer_work(proc, BINDER_DEFERRED_RELEASE) is called which punts the actual cleanup operation to a workqueue. At some point, binder_deferred_func() will be called which will end up calling binder_deferred_release() which will retrieve and cleanup the binder_context attach to this struct binder_proc.

If we trace back where this binder_context is attached to binder_proc we see that it is set in binder_open() and is taken from the struct binder_device it is associated with. This obviously assumes that the struct binder_device that context is attached to is _never_ freed. While that might be true for devtmpfs binder devices it is most certainly wrong for binderfs binder devices.

So, assume binder_open() is called on a binderfs binder devices. We now stash away the struct binder_context associated with that struct binder_devices: proc->context = &binder_dev->context; /* binderfs stashes devices in i_private */ if (is_binderfs_device(nodp)) { binder_dev = nodp->i_private; info = nodp->i_sb->s_fs_info; binder_binderfs_dir_entry_proc = info->proc_log_dir; } else { . . . proc->context = &binder_dev->context;

Now let's assume that the binderfs instance for that binder devices is shutdown via umount() and/or the mount namespace associated with it goes away. As long as there is still an fd open for that binderfs binder device things are fine. But let's assume we now close the last fd for that binderfs binder device. Now binder_release() is called and punts to the workqueue. Assume that the workqueue has quite a bit of stuff to do and doesn't get to cleaning up the struct binder_proc and the associated struct binder_context with it for that binderfs binder device right away. In the meantime, the VFS is killing the super block and is ultimately calling sb->evict_inode() which means it will call binderfs_evict_inode() which does:

static void binderfs_evict_inode(struct inode *inode) { struct binder_device *device = inode->i_private; struct binderfs_info *info = BINDERFS_I(inode);

clear_inode(inode);

if (!S_ISCHR(inode->i_mode) || !device) return;

mutex_lock(&binderfs_minors_mutex); --info->device_count; ida_free(&binderfs_minors, device->miscdev.minor); mutex_unlock(&binderfs_minors_mutex);

kfree(device->context.name); kfree(device); }

thereby freeing the struct binder_device including struct binder_context.

Now the workqueue finally has time to get around to cleaning up struct binder_proc and is now trying to access the associate struct binder_context. Since it's already freed it will OOPs.

Fix this by introducing a refounct on binder devices.

This is an alternative fix to 51d8a7eca677 ("binder: prevent UAF read in print_binder_transaction_log_entry()").

Fixes: 3ad20fe393b3 ("binder: implement binderfs") Fixes: 2669b8b0c798 ("binder: prevent UAF for binderfs devices") Fixes: 03e2e07e3814 ("binder: Make transaction_log available in binderfs") Related : 51d8a7eca677 ("binder: prevent UAF read in print_binder_transaction_log_entry()") Cc: stable@vger.kernel.org Signed-off-by: Christian Brauner christian.brauner@ubuntu.com Acked-by: Todd Kjos tkjos@google.com Link: https://lore.kernel.org/r/20200303164340.670054-1-christian.brauner@ubuntu.c... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/android/binder.c | 12 +++++++++--- drivers/android/binder_internal.h | 15 ++------------- drivers/android/binderfs.c | 7 +++++-- 3 files changed, 16 insertions(+), 18 deletions(-)

--- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -5223,13 +5223,14 @@ static int binder_open(struct inode *nod proc->default_priority = task_nice(current); /* binderfs stashes devices in i_private */ if (is_binderfs_device(nodp)) { - binder_dev = binderfs_device_get(nodp->i_private); + binder_dev = nodp->i_private; info = nodp->i_sb->s_fs_info; binder_binderfs_dir_entry_proc = info->proc_log_dir; } else { binder_dev = container_of(filp->private_data, struct binder_device, miscdev); } + refcount_inc(&binder_dev->ref); proc->context = &binder_dev->context; binder_alloc_init(&proc->alloc);

@@ -5424,6 +5425,12 @@ static void binder_deferred_release(stru context->binder_context_mgr_node = NULL; } mutex_unlock(&context->context_mgr_node_lock); + device = container_of(proc->context, struct binder_device, context); + if (refcount_dec_and_test(&device->ref)) { + kfree(context->name); + kfree(device); + } + proc->context = NULL; binder_inner_proc_lock(proc); /* * Make sure proc stays alive after we @@ -5487,8 +5494,6 @@ static void binder_deferred_release(stru outgoing_refs, active_transactions);

binder_proc_dec_tmpref(proc); - device = container_of(proc->context, struct binder_device, context); - binderfs_device_put(device); }

static void binder_deferred_func(struct work_struct *work) @@ -6082,6 +6087,7 @@ static int __init init_binder_device(con binder_device->miscdev.minor = MISC_DYNAMIC_MINOR; binder_device->miscdev.name = name;

+ refcount_set(&binder_device->ref, 1); binder_device->context.binder_context_mgr_uid = INVALID_UID; binder_device->context.name = name; mutex_init(&binder_device->context.context_mgr_node_lock); --- a/drivers/android/binder_internal.h +++ b/drivers/android/binder_internal.h @@ -8,6 +8,7 @@ #include <linux/list.h> #include <linux/miscdevice.h> #include <linux/mutex.h> +#include <linux/refcount.h> #include <linux/stddef.h> #include <linux/types.h> #include <linux/uidgid.h> @@ -33,21 +34,9 @@ struct binder_device { struct miscdevice miscdev; struct binder_context context; struct inode *binderfs_inode; + refcount_t ref; };

-static inline struct binder_device *binderfs_device_get(struct binder_device *dev) -{ - if (dev->binderfs_inode) - ihold(dev->binderfs_inode); - return dev; -} - -static inline void binderfs_device_put(struct binder_device *dev) -{ - if (dev->binderfs_inode) - iput(dev->binderfs_inode); -} - /** * binderfs_mount_opts - mount options for binderfs * @max: maximum number of allocatable binderfs binder devices --- a/drivers/android/binderfs.c +++ b/drivers/android/binderfs.c @@ -154,6 +154,7 @@ static int binderfs_binder_device_create if (!name) goto err;

+ refcount_set(&device->ref, 1); device->binderfs_inode = inode; device->context.binder_context_mgr_uid = INVALID_UID; device->context.name = name; @@ -257,8 +258,10 @@ static void binderfs_evict_inode(struct ida_free(&binderfs_minors, device->miscdev.minor); mutex_unlock(&binderfs_minors_mutex);

- kfree(device->context.name); - kfree(device); + if (refcount_dec_and_test(&device->ref)) { + kfree(device->context.name); + kfree(device); + } }

/**

From: Kailang Yang kailang@realtek.com

commit 76f7dec08fd64e9e3ad0810a1a8a60b0a846d348 upstream.

ThinkPad want to support Headset Button control. This patch will enable it.

Signed-off-by: Kailang Yang kailang@realtek.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/7f0b7128f40f41f6b5582ff610adc33d@realtek.com Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- sound/pci/hda/patch_realtek.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)

--- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -5920,7 +5920,7 @@ enum { ALC289_FIXUP_DUAL_SPK, ALC294_FIXUP_SPK2_TO_DAC1, ALC294_FIXUP_ASUS_DUAL_SPK, - + ALC285_FIXUP_THINKPAD_HEADSET_JACK, };

static const struct hda_fixup alc269_fixups[] = { @@ -7042,7 +7042,12 @@ static const struct hda_fixup alc269_fix .chained = true, .chain_id = ALC294_FIXUP_SPK2_TO_DAC1 }, - + [ALC285_FIXUP_THINKPAD_HEADSET_JACK] = { + .type = HDA_FIXUP_FUNC, + .v.func = alc_fixup_headset_jack, + .chained = true, + .chain_id = ALC285_FIXUP_SPEAKER2_TO_DAC1 + }, };

static const struct snd_pci_quirk alc269_fixup_tbl[] = { @@ -7278,8 +7283,8 @@ static const struct snd_pci_quirk alc269 SND_PCI_QUIRK(0x17aa, 0x224c, "Thinkpad", ALC298_FIXUP_TPT470_DOCK), SND_PCI_QUIRK(0x17aa, 0x224d, "Thinkpad", ALC298_FIXUP_TPT470_DOCK), SND_PCI_QUIRK(0x17aa, 0x225d, "Thinkpad T480", ALC269_FIXUP_LIMIT_INT_MIC_BOOST), - SND_PCI_QUIRK(0x17aa, 0x2292, "Thinkpad X1 Yoga 7th", ALC285_FIXUP_SPEAKER2_TO_DAC1), - SND_PCI_QUIRK(0x17aa, 0x2293, "Thinkpad X1 Carbon 7th", ALC285_FIXUP_SPEAKER2_TO_DAC1), + SND_PCI_QUIRK(0x17aa, 0x2292, "Thinkpad X1 Yoga 7th", ALC285_FIXUP_THINKPAD_HEADSET_JACK), + SND_PCI_QUIRK(0x17aa, 0x2293, "Thinkpad X1 Carbon 7th", ALC285_FIXUP_THINKPAD_HEADSET_JACK), SND_PCI_QUIRK(0x17aa, 0x30bb, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY), SND_PCI_QUIRK(0x17aa, 0x30e2, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY), SND_PCI_QUIRK(0x17aa, 0x310c, "ThinkCentre Station", ALC294_FIXUP_LENOVO_MIC_LOCATION),

From: Jian-Hong Pan jian-hong@endlessm.com

commit 8b33a134a9cc2a501f8fc731d91caef39237d495 upstream.

A headset on the laptop like ASUS B9450FA does not work, until quirk ALC294_FIXUP_ASUS_HPE is applied.

Signed-off-by: Jian-Hong Pan jian-hong@endlessm.com Signed-off-by: Kailang Yang kailang@realtek.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200225072920.109199-1-jian-hong@endlessm.com Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- sound/pci/hda/patch_realtek.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)

--- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -5922,6 +5922,7 @@ enum { ALC294_FIXUP_SPK2_TO_DAC1, ALC294_FIXUP_ASUS_DUAL_SPK, ALC285_FIXUP_THINKPAD_HEADSET_JACK, + ALC294_FIXUP_ASUS_HPE, };

static const struct hda_fixup alc269_fixups[] = { @@ -7049,6 +7050,17 @@ static const struct hda_fixup alc269_fix .chained = true, .chain_id = ALC285_FIXUP_SPEAKER2_TO_DAC1 }, + [ALC294_FIXUP_ASUS_HPE] = { + .type = HDA_FIXUP_VERBS, + .v.verbs = (const struct hda_verb[]) { + /* Set EAPD high */ + { 0x20, AC_VERB_SET_COEF_INDEX, 0x0f }, + { 0x20, AC_VERB_SET_PROC_COEF, 0x7774 }, + { } + }, + .chained = true, + .chain_id = ALC294_FIXUP_ASUS_HEADSET_MIC + }, };

static const struct snd_pci_quirk alc269_fixup_tbl[] = { @@ -7214,6 +7226,7 @@ static const struct snd_pci_quirk alc269 SND_PCI_QUIRK(0x1043, 0x16e3, "ASUS UX50", ALC269_FIXUP_STEREO_DMIC), SND_PCI_QUIRK(0x1043, 0x17d1, "ASUS UX431FL", ALC294_FIXUP_ASUS_DUAL_SPK), SND_PCI_QUIRK(0x1043, 0x18b1, "Asus MJ401TA", ALC256_FIXUP_ASUS_HEADSET_MIC), + SND_PCI_QUIRK(0x1043, 0x19ce, "ASUS B9450FA", ALC294_FIXUP_ASUS_HPE), SND_PCI_QUIRK(0x1043, 0x1a13, "Asus G73Jw", ALC269_FIXUP_ASUS_G73JW), SND_PCI_QUIRK(0x1043, 0x1a30, "ASUS X705UD", ALC256_FIXUP_ASUS_MIC), SND_PCI_QUIRK(0x1043, 0x1b13, "Asus U41SV", ALC269_FIXUP_INV_DMIC),

From: Aurelien Aptel aaptel@suse.com

commit 86f740f2aed5ea7fe1aa86dc2df0fb4ab0f71088 upstream.

To rename a file in SMB2 we open it with the DELETE access and do a special SetInfo on it. If the handle is missing the DELETE bit the server will fail the SetInfo with STATUS_ACCESS_DENIED.

We currently try to reuse any existing opened handle we have with cifs_get_writable_path(). That function looks for handles with WRITE access but doesn't check for DELETE, making rename() fail if it finds a handle to reuse. Simple reproducer below.

To select handles with the DELETE bit, this patch adds a flag argument to cifs_get_writable_path() and find_writable_file() and the existing 'bool fsuid_only' argument is converted to a flag.

The cifsFileInfo struct only stores the UNIX open mode but not the original SMB access flags. Since the DELETE bit is not mapped in that mode, this patch stores the access mask in cifs_fid on file open, which is accessible from cifsFileInfo.

Simple reproducer:

#include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> #define E(s) perror(s), exit(1)

int main(int argc, char *argv[]) { int fd, ret; if (argc != 3) { fprintf(stderr, "Usage: %s A B\n" "create&open A in write mode, " "rename A to B, close A\n", argv[0]); return 0; }

fd = openat(AT_FDCWD, argv[1], O_WRONLY|O_CREAT|O_SYNC, 0666); if (fd == -1) E("openat()");

ret = rename(argv[1], argv[2]); if (ret) E("rename()");

ret = close(fd); if (ret) E("close()");

return ret; }

$ gcc -o bugrename bugrename.c $ ./bugrename /mnt/a /mnt/b rename(): Permission denied

Fixes: 8de9e86c67ba ("cifs: create a helper to find a writeable handle by path name") CC: Stable stable@vger.kernel.org Signed-off-by: Aurelien Aptel aaptel@suse.com Signed-off-by: Steve French stfrench@microsoft.com Reviewed-by: Pavel Shilovsky pshilov@microsoft.com Reviewed-by: Paulo Alcantara (SUSE) pc@cjr.nz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- fs/cifs/cifsglob.h | 7 +++++++ fs/cifs/cifsproto.h | 5 +++-- fs/cifs/cifssmb.c | 3 ++- fs/cifs/file.c | 19 ++++++++++++------- fs/cifs/inode.c | 6 +++--- fs/cifs/smb1ops.c | 2 +- fs/cifs/smb2inode.c | 4 ++-- fs/cifs/smb2ops.c | 3 ++- fs/cifs/smb2pdu.c | 1 + 9 files changed, 33 insertions(+), 17 deletions(-)

--- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -1229,6 +1229,7 @@ struct cifs_fid { __u64 volatile_fid; /* volatile file id for smb2 */ __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ __u8 create_guid[16]; + __u32 access; struct cifs_pending_open *pending_open; unsigned int epoch; #ifdef CONFIG_CIFS_DEBUG2 @@ -1700,6 +1701,12 @@ static inline bool is_retryable_error(in return false; }

+ +/* cifs_get_writable_file() flags */ +#define FIND_WR_ANY 0 +#define FIND_WR_FSUID_ONLY 1 +#define FIND_WR_WITH_DELETE 2 + #define MID_FREE 0 #define MID_REQUEST_ALLOCATED 1 #define MID_REQUEST_SUBMITTED 2 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -133,11 +133,12 @@ extern bool backup_cred(struct cifs_sb_i extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof); extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset, unsigned int bytes_written); -extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool); +extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int); extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, - bool fsuid_only, + int flags, struct cifsFileInfo **ret_file); extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name, + int flags, struct cifsFileInfo **ret_file); extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool); extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name, --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -1489,6 +1489,7 @@ openRetry: *oplock = rsp->OplockLevel; /* cifs fid stays in le */ oparms->fid->netfid = rsp->Fid; + oparms->fid->access = desired_access;

/* Let caller know file was created so we can set the mode. */ /* Do we care about the CreateAction in any other cases? */ @@ -2112,7 +2113,7 @@ cifs_writev_requeue(struct cifs_writedat wdata2->tailsz = tailsz; wdata2->bytes = cur_len;

- rc = cifs_get_writable_file(CIFS_I(inode), false, + rc = cifs_get_writable_file(CIFS_I(inode), FIND_WR_ANY, &wdata2->cfile); if (!wdata2->cfile) { cifs_dbg(VFS, "No writable handle to retry writepages rc=%d\n", --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1916,7 +1916,7 @@ struct cifsFileInfo *find_readable_file(

/* Return -EBADF if no handle is found and general rc otherwise */ int -cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, bool fsuid_only, +cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, int flags, struct cifsFileInfo **ret_file) { struct cifsFileInfo *open_file, *inv_file = NULL; @@ -1924,7 +1924,8 @@ cifs_get_writable_file(struct cifsInodeI bool any_available = false; int rc = -EBADF; unsigned int refind = 0; - + bool fsuid_only = flags & FIND_WR_FSUID_ONLY; + bool with_delete = flags & FIND_WR_WITH_DELETE; *ret_file = NULL;

/* @@ -1956,6 +1957,8 @@ refind_writable: continue; if (fsuid_only && !uid_eq(open_file->uid, current_fsuid())) continue; + if (with_delete && !(open_file->fid.access & DELETE)) + continue; if (OPEN_FMODE(open_file->f_flags) & FMODE_WRITE) { if (!open_file->invalidHandle) { /* found a good writable file */ @@ -2003,12 +2006,12 @@ refind_writable: }

struct cifsFileInfo * -find_writable_file(struct cifsInodeInfo *cifs_inode, bool fsuid_only) +find_writable_file(struct cifsInodeInfo *cifs_inode, int flags) { struct cifsFileInfo *cfile; int rc;

- rc = cifs_get_writable_file(cifs_inode, fsuid_only, &cfile); + rc = cifs_get_writable_file(cifs_inode, flags, &cfile); if (rc) cifs_dbg(FYI, "couldn't find writable handle rc=%d", rc);

@@ -2017,6 +2020,7 @@ find_writable_file(struct cifsInodeInfo

int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name, + int flags, struct cifsFileInfo **ret_file) { struct list_head *tmp; @@ -2043,7 +2047,7 @@ cifs_get_writable_path(struct cifs_tcon kfree(full_path); cinode = CIFS_I(d_inode(cfile->dentry)); spin_unlock(&tcon->open_file_lock); - return cifs_get_writable_file(cinode, 0, ret_file); + return cifs_get_writable_file(cinode, flags, ret_file); }

spin_unlock(&tcon->open_file_lock); @@ -2120,7 +2124,8 @@ static int cifs_partialpagewrite(struct if (mapping->host->i_size - offset < (loff_t)to) to = (unsigned)(mapping->host->i_size - offset);

- rc = cifs_get_writable_file(CIFS_I(mapping->host), false, &open_file); + rc = cifs_get_writable_file(CIFS_I(mapping->host), FIND_WR_ANY, + &open_file); if (!rc) { bytes_written = cifs_write(open_file, open_file->pid, write_data, to - from, &offset); @@ -2313,7 +2318,7 @@ retry: if (cfile) cifsFileInfo_put(cfile);

- rc = cifs_get_writable_file(CIFS_I(inode), false, &cfile); + rc = cifs_get_writable_file(CIFS_I(inode), FIND_WR_ANY, &cfile);

/* in case of an error store it to return later */ if (rc) --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -2220,7 +2220,7 @@ cifs_set_file_size(struct inode *inode, * writebehind data than the SMB timeout for the SetPathInfo * request would allow */ - open_file = find_writable_file(cifsInode, true); + open_file = find_writable_file(cifsInode, FIND_WR_FSUID_ONLY); if (open_file) { tcon = tlink_tcon(open_file->tlink); server = tcon->ses->server; @@ -2370,7 +2370,7 @@ cifs_setattr_unix(struct dentry *direntr args->ctime = NO_CHANGE_64;

args->device = 0; - open_file = find_writable_file(cifsInode, true); + open_file = find_writable_file(cifsInode, FIND_WR_FSUID_ONLY); if (open_file) { u16 nfid = open_file->fid.netfid; u32 npid = open_file->pid; @@ -2473,7 +2473,7 @@ cifs_setattr_nounix(struct dentry *diren rc = 0;

if (attrs->ia_valid & ATTR_MTIME) { - rc = cifs_get_writable_file(cifsInode, false, &wfile); + rc = cifs_get_writable_file(cifsInode, FIND_WR_ANY, &wfile); if (!rc) { tcon = tlink_tcon(wfile->tlink); rc = tcon->ses->server->ops->flush(xid, tcon, &wfile->fid); --- a/fs/cifs/smb1ops.c +++ b/fs/cifs/smb1ops.c @@ -767,7 +767,7 @@ smb_set_file_info(struct inode *inode, c struct cifs_tcon *tcon;

/* if the file is already open for write, just use that fileid */ - open_file = find_writable_file(cinode, true); + open_file = find_writable_file(cinode, FIND_WR_FSUID_ONLY); if (open_file) { fid.netfid = open_file->fid.netfid; netpid = open_file->pid; --- a/fs/cifs/smb2inode.c +++ b/fs/cifs/smb2inode.c @@ -525,7 +525,7 @@ smb2_mkdir_setinfo(struct inode *inode, cifs_i = CIFS_I(inode); dosattrs = cifs_i->cifsAttrs | ATTR_READONLY; data.Attributes = cpu_to_le32(dosattrs); - cifs_get_writable_path(tcon, name, &cfile); + cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile); tmprc = smb2_compound_op(xid, tcon, cifs_sb, name, FILE_WRITE_ATTRIBUTES, FILE_CREATE, CREATE_NOT_FILE, ACL_NO_MODE, @@ -581,7 +581,7 @@ smb2_rename_path(const unsigned int xid, { struct cifsFileInfo *cfile;

- cifs_get_writable_path(tcon, from_name, &cfile); + cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);

return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, DELETE, SMB2_OP_RENAME, cfile); --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -1338,6 +1338,7 @@ smb2_set_fid(struct cifsFileInfo *cfile,

cfile->fid.persistent_fid = fid->persistent_fid; cfile->fid.volatile_fid = fid->volatile_fid; + cfile->fid.access = fid->access; #ifdef CONFIG_CIFS_DEBUG2 cfile->fid.mid = fid->mid; #endif /* CIFS_DEBUG2 */ @@ -3162,7 +3163,7 @@ static loff_t smb3_llseek(struct file *f * some servers (Windows2016) will not reflect recent writes in * QUERY_ALLOCATED_RANGES until SMB2_flush is called. */ - wrcfile = find_writable_file(cifsi, false); + wrcfile = find_writable_file(cifsi, FIND_WR_ANY); if (wrcfile) { filemap_write_and_wait(inode->i_mapping); smb2_flush_file(xid, tcon, &wrcfile->fid); --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -2650,6 +2650,7 @@ SMB2_open(const unsigned int xid, struct atomic_inc(&tcon->num_remote_opens); oparms->fid->persistent_fid = rsp->PersistentFileId; oparms->fid->volatile_fid = rsp->VolatileFileId; + oparms->fid->access = oparms->desired_access; #ifdef CONFIG_CIFS_DEBUG2 oparms->fid->mid = le64_to_cpu(rsp->sync_hdr.MessageId); #endif /* CIFS_DEBUG2 */

From: Dan Lazewatsky dlaz@chromium.org

commit b96ed52d781a2026d0c0daa5787c6f3d45415862 upstream.

LPM on the device appears to cause xHCI host controllers to claim that there isn't enough bandwidth to support additional devices.

Signed-off-by: Dan Lazewatsky dlaz@chromium.org Cc: stable stable@vger.kernel.org Signed-off-by: Gustavo Padovan gustavo.padovan@collabora.com Link: https://lore.kernel.org/r/20200226143438.1445-1-gustavo.padovan@collabora.co... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/usb/core/quirks.c | 3 +++ 1 file changed, 3 insertions(+)

--- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -231,6 +231,9 @@ static const struct usb_device_id usb_qu /* Logitech PTZ Pro Camera */ { USB_DEVICE(0x046d, 0x0853), .driver_info = USB_QUIRK_DELAY_INIT },

+ /* Logitech Screen Share */ + { USB_DEVICE(0x046d, 0x086c), .driver_info = USB_QUIRK_NO_LPM }, + /* Logitech Quickcam Fusion */ { USB_DEVICE(0x046d, 0x08c1), .driver_info = USB_QUIRK_RESET_RESUME },

From: Peter Chen peter.chen@nxp.com

commit 8a7c47fb7285b23ca259c888016513d5566fa9e8 upstream.

It has marked the dequeue trb as link trb, but its next segment pointer is still itself, it causes the transfer can't go on. Fix it by set its pointer as the trb address for the next request.

Fixes: f616c3bda47e ("usb: cdns3: Fix dequeue implementation") Signed-off-by: Peter Chen peter.chen@nxp.com Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20200219141455.23257-2-peter.chen@nxp.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/usb/cdns3/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/cdns3/gadget.c +++ b/drivers/usb/cdns3/gadget.c @@ -2107,7 +2107,7 @@ found: /* Update ring only if removed request is on pending_req_list list */ if (req_on_hw_ring) { link_trb->buffer = TRB_BUFFER(priv_ep->trb_pool_dma + - (priv_req->start_trb * TRB_SIZE)); + ((priv_req->end_trb + 1) * TRB_SIZE)); link_trb->control = (link_trb->control & TRB_CYCLE) | TRB_TYPE(TRB_LINK) | TRB_CHAIN;

From: Eugeniu Rosca erosca@de.adit-jv.com

commit 63d6d7ed475c53dc1cabdfedf63de1fd8dcd72ee upstream.

Address below Coverity complaint (Feb 25, 2020, 8:06 AM CET):

--- drivers/usb/core/hub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1865,7 +1865,7 @@ static int hub_probe(struct usb_interfac

if (id->driver_info & HUB_QUIRK_DISABLE_AUTOSUSPEND) { hub->quirk_disable_autosuspend = 1; - usb_autopm_get_interface(intf); + usb_autopm_get_interface_no_resume(intf); }

if (hub_configure(hub, &desc->endpoint[0].desc) >= 0)

From: Eugeniu Rosca erosca@de.adit-jv.com

commit 1f8b39bc99a31759e97a0428a5c3f64802c1e61d upstream.

Reviewing a fresh portion of coverity defects in USB core (specifically CID 1458999), Alan Stern noted below in [1]:

On Tue, Feb 25, 2020 at 02:39:23PM -0500, Alan Stern wrote:

A revised search finds line 997 in drivers/usb/core/hub.c and lines 216, 269 in drivers/usb/core/port.c. (I didn't try looking in any other directories.) AFAICT all three of these should check the return value, although a error message in the kernel log probably isn't needed.

Factor out the usb_port_runtime_{resume,suspend}() changes into a standalone patch to allow conflict-free porting on top of stable v3.9+.

[1] https://lore.kernel.org/lkml/Pine.LNX.4.44L0.2002251419120.1485-100000@iolan...

Fixes: 971fcd492cebf5 ("usb: add runtime pm support for usb port device") Cc: stable@vger.kernel.org # v3.9+ Suggested-by: Alan Stern stern@rowland.harvard.edu Signed-off-by: Eugeniu Rosca erosca@de.adit-jv.com Acked-by: Alan Stern stern@rowland.harvard.edu Link: https://lore.kernel.org/r/20200226175036.14946-3-erosca@de.adit-jv.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/usb/core/port.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)

--- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -213,7 +213,10 @@ static int usb_port_runtime_resume(struc if (!port_dev->is_superspeed && peer) pm_runtime_get_sync(&peer->dev);

- usb_autopm_get_interface(intf); + retval = usb_autopm_get_interface(intf); + if (retval < 0) + return retval; + retval = usb_hub_set_port_power(hdev, hub, port1, true); msleep(hub_power_on_good_delay(hub)); if (udev && !retval) { @@ -266,7 +269,10 @@ static int usb_port_runtime_suspend(stru if (usb_port_block_power_off) return -EBUSY;

- usb_autopm_get_interface(intf); + retval = usb_autopm_get_interface(intf); + if (retval < 0) + return retval; + retval = usb_hub_set_port_power(hdev, hub, port1, false); usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_CONNECTION); if (!port_dev->is_superspeed)

From: Mel Gorman mgorman@techsingularity.net

commit 8b272b3cbbb50a6a8e62d8a15affd473a788e184 upstream.

: A user reported a bug against a distribution kernel while running a : proprietary workload described as "memory intensive that is not swapping" : that is expected to apply to mainline kernels. The workload is : read/write/modifying ranges of memory and checking the contents. They : reported that within a few hours that a bad PMD would be reported followed : by a memory corruption where expected data was all zeros. A partial : report of the bad PMD looked like : : [ 5195.338482] ../mm/pgtable-generic.c:33: bad pmd ffff8888157ba008(000002e0396009e2) : [ 5195.341184] ------------[ cut here ]------------ : [ 5195.356880] kernel BUG at ../mm/pgtable-generic.c:35! : .... : [ 5195.410033] Call Trace: : [ 5195.410471] [<ffffffff811bc75d>] change_protection_range+0x7dd/0x930 : [ 5195.410716] [<ffffffff811d4be8>] change_prot_numa+0x18/0x30 : [ 5195.410918] [<ffffffff810adefe>] task_numa_work+0x1fe/0x310 : [ 5195.411200] [<ffffffff81098322>] task_work_run+0x72/0x90 : [ 5195.411246] [<ffffffff81077139>] exit_to_usermode_loop+0x91/0xc2 : [ 5195.411494] [<ffffffff81003a51>] prepare_exit_to_usermode+0x31/0x40 : [ 5195.411739] [<ffffffff815e56af>] retint_user+0x8/0x10 : : Decoding revealed that the PMD was a valid prot_numa PMD and the bad PMD : was a false detection. The bug does not trigger if automatic NUMA : balancing or transparent huge pages is disabled. : : The bug is due a race in change_pmd_range between a pmd_trans_huge and : pmd_nond_or_clear_bad check without any locks held. During the : pmd_trans_huge check, a parallel protection update under lock can have : cleared the PMD and filled it with a prot_numa entry between the transhuge : check and the pmd_none_or_clear_bad check. : : While this could be fixed with heavy locking, it's only necessary to make : a copy of the PMD on the stack during change_pmd_range and avoid races. A : new helper is created for this as the check if quite subtle and the : existing similar helpful is not suitable. This passed 154 hours of : testing (usually triggers between 20 minutes and 24 hours) without : detecting bad PMDs or corruption. A basic test of an autonuma-intensive : workload showed no significant change in behaviour.

Although Mel withdrew the patch on the face of LKML comment https://lkml.org/lkml/2017/4/10/922 the race window aforementioned is still open, and we have reports of Linpack test reporting bad residuals after the bad PMD warning is observed. In addition to that, bad rss-counter and non-zero pgtables assertions are triggered on mm teardown for the task hitting the bad PMD.

host kernel: mm/pgtable-generic.c:40: bad pmd 00000000b3152f68(8000000d2d2008e7) .... host kernel: BUG: Bad rss-counter state mm:00000000b583043d idx:1 val:512 host kernel: BUG: non-zero pgtables_bytes on freeing mm: 4096

The issue is observed on a v4.18-based distribution kernel, but the race window is expected to be applicable to mainline kernels, as well.

[akpm@linux-foundation.org: fix comment typo, per Rafael] Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Rafael Aquini aquini@redhat.com Signed-off-by: Mel Gorman mgorman@techsingularity.net Cc: stable@vger.kernel.org Cc: Zi Yan zi.yan@cs.rutgers.edu Cc: "Kirill A. Shutemov" kirill.shutemov@linux.intel.com Cc: Vlastimil Babka vbabka@suse.cz Cc: Michal Hocko mhocko@suse.com Link: http://lkml.kernel.org/r/20200216191800.22423-1-aquini@redhat.com Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- mm/mprotect.c | 38 ++++++++++++++++++++++++++++++++++++-- 1 file changed, 36 insertions(+), 2 deletions(-)

--- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -161,6 +161,31 @@ static unsigned long change_pte_range(st return pages; }

+/* + * Used when setting automatic NUMA hinting protection where it is + * critical that a numa hinting PMD is not confused with a bad PMD. + */ +static inline int pmd_none_or_clear_bad_unless_trans_huge(pmd_t *pmd) +{ + pmd_t pmdval = pmd_read_atomic(pmd); + + /* See pmd_none_or_trans_huge_or_clear_bad for info on barrier */ +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + barrier(); +#endif + + if (pmd_none(pmdval)) + return 1; + if (pmd_trans_huge(pmdval)) + return 0; + if (unlikely(pmd_bad(pmdval))) { + pmd_clear_bad(pmd); + return 1; + } + + return 0; +} + static inline unsigned long change_pmd_range(struct vm_area_struct *vma, pud_t *pud, unsigned long addr, unsigned long end, pgprot_t newprot, int dirty_accountable, int prot_numa) @@ -178,8 +203,17 @@ static inline unsigned long change_pmd_r unsigned long this_pages;

next = pmd_addr_end(addr, end); - if (!is_swap_pmd(*pmd) && !pmd_trans_huge(*pmd) && !pmd_devmap(*pmd) - && pmd_none_or_clear_bad(pmd)) + + /* + * Automatic NUMA balancing walks the tables with mmap_sem + * held for read. It's possible a parallel update to occur + * between pmd_trans_huge() and a pmd_none_or_clear_bad() + * check leading to a false positive and clearing. + * Hence, it's necessary to atomically read the PMD value + * for all the checks. + */ + if (!is_swap_pmd(*pmd) && !pmd_devmap(*pmd) && + pmd_none_or_clear_bad_unless_trans_huge(pmd)) goto next;

/* invoke the mmu notifier if the pmd is populated */

From: Vlastimil Babka vbabka@suse.cz

commit c87cbc1f007c4b46165f05ceca04e1973cda0b9c upstream.

Commit cd02cf1aceea ("mm/hotplug: fix an imbalance with DEBUG_PAGEALLOC") fixed memory hotplug with debug_pagealloc enabled, where onlining a page goes through page freeing, which removes the direct mapping. Some arches don't like when the page is not mapped in the first place, so generic_online_page() maps it first. This is somewhat wasteful, but better than special casing page freeing fast paths.

The commit however missed that DEBUG_PAGEALLOC configured doesn't mean it's actually enabled. One has to test debug_pagealloc_enabled() since 031bc5743f15 ("mm/debug-pagealloc: make debug-pagealloc boottime configurable"), or alternatively debug_pagealloc_enabled_static() since 8e57f8acbbd1 ("mm, debug_pagealloc: don't rely on static keys too early"), but this is not done.

As a result, a s390 kernel with DEBUG_PAGEALLOC configured but not enabled will crash:

Unable to handle kernel pointer dereference in virtual kernel address space Failing address: 0000000000000000 TEID: 0000000000000483 Fault in home space mode while using kernel ASCE. AS:0000001ece13400b R2:000003fff7fd000b R3:000003fff7fcc007 S:000003fff7fd7000 P:000000000000013d Oops: 0004 ilc:2 [#1] SMP CPU: 1 PID: 26015 Comm: chmem Kdump: loaded Tainted: GX 5.3.18-5-default #1 SLE15-SP2 (unreleased) Krnl PSW : 0704e00180000000 0000001ecd281b9e (__kernel_map_pages+0x166/0x188) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 Krnl GPRS: 0000000000000000 0000000000000800 0000400b00000000 0000000000000100 0000000000000001 0000000000000000 0000000000000002 0000000000000100 0000001ece139230 0000001ecdd98d40 0000400b00000100 0000000000000000 000003ffa17e4000 001fffe0114f7d08 0000001ecd4d93ea 001fffe0114f7b20 Krnl Code: 0000001ecd281b8e: ec17ffff00d8 ahik %r1,%r7,-1 0000001ecd281b94: ec111dbc0355 risbg %r1,%r1,29,188,3

0000001ecd281b9e: 94fb5006 ni 6(%r5),251

0000001ecd281ba2: 41505008 la %r5,8(%r5) 0000001ecd281ba6: ec51fffc6064 cgrj %r5,%r1,6,1ecd281b9e 0000001ecd281bac: 1a07 ar %r0,%r7 0000001ecd281bae: ec03ff584076 crj %r0,%r3,4,1ecd281a5e Call Trace: [<0000001ecd281b9e>] __kernel_map_pages+0x166/0x188 [<0000001ecd4d9516>] online_pages_range+0xf6/0x128 [<0000001ecd2a8186>] walk_system_ram_range+0x7e/0xd8 [<0000001ecda28aae>] online_pages+0x2fe/0x3f0 [<0000001ecd7d02a6>] memory_subsys_online+0x8e/0xc0 [<0000001ecd7add42>] device_online+0x5a/0xc8 [<0000001ecd7d0430>] state_store+0x88/0x118 [<0000001ecd5b9f62>] kernfs_fop_write+0xc2/0x200 [<0000001ecd5064b6>] vfs_write+0x176/0x1e0 [<0000001ecd50676a>] ksys_write+0xa2/0x100 [<0000001ecda315d4>] system_call+0xd8/0x2c8

Fix this by checking debug_pagealloc_enabled_static() before calling kernel_map_pages(). Backports for kernel before 5.5 should use debug_pagealloc_enabled() instead. Also add comments.

Fixes: cd02cf1aceea ("mm/hotplug: fix an imbalance with DEBUG_PAGEALLOC") Reported-by: Gerald Schaefer gerald.schaefer@de.ibm.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Vlastimil Babka vbabka@suse.cz Reviewed-by: David Hildenbrand david@redhat.com Cc: stable@vger.kernel.org Cc: Joonsoo Kim iamjoonsoo.kim@lge.com Cc: Qian Cai cai@lca.pw Link: http://lkml.kernel.org/r/20200224094651.18257-1-vbabka@suse.cz Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- include/linux/mm.h | 4 ++++ mm/memory_hotplug.c | 8 +++++++- 2 files changed, 11 insertions(+), 1 deletion(-)

--- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2695,6 +2695,10 @@ static inline bool debug_pagealloc_enabl #if defined(CONFIG_DEBUG_PAGEALLOC) || defined(CONFIG_ARCH_HAS_SET_DIRECT_MAP) extern void __kernel_map_pages(struct page *page, int numpages, int enable);

+/* + * When called in DEBUG_PAGEALLOC context, the call should most likely be + * guarded by debug_pagealloc_enabled() or debug_pagealloc_enabled_static() + */ static inline void kernel_map_pages(struct page *page, int numpages, int enable) { --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -598,7 +598,13 @@ EXPORT_SYMBOL_GPL(__online_page_free);

static void generic_online_page(struct page *page, unsigned int order) { - kernel_map_pages(page, 1 << order, 1); + /* + * Freeing the page with debug_pagealloc enabled will try to unmap it, + * so we should map it first. This is better than introducing a special + * case in page freeing fast path. + */ + if (debug_pagealloc_enabled_static()) + kernel_map_pages(page, 1 << order, 1); __free_pages_core(page, order); totalram_pages_add(1UL << order); #ifdef CONFIG_HIGHMEM

From: Omar Sandoval osandov@fb.com

commit e7a04894c766daa4248cb736efee93550f2d5872 upstream.

btrfs_lookup_and_bind_dio_csum() does pointer arithmetic which assumes 32-bit checksums. If using a larger checksum, this leads to spurious failures when a direct I/O read crosses a stripe. This is easy to reproduce:

# mkfs.btrfs -f --checksum blake2 -d raid0 /dev/vdc /dev/vdd ... # mount /dev/vdc /mnt # cd /mnt # dd if=/dev/urandom of=foo bs=1M count=1 status=none # dd if=foo of=/dev/null bs=1M iflag=direct status=none dd: error reading 'foo': Input/output error # dmesg | tail -1 [ 135.821568] BTRFS warning (device vdc): csum failed root 5 ino 257 off 421888 ...

Fix it by using the actual checksum size.

Fixes: 1e25a2e3ca0d ("btrfs: don't assume ordered sums to be 4 bytes") CC: stable@vger.kernel.org # 5.4+ Reviewed-by: Johannes Thumshirn johannes.thumshirn@wdc.com Signed-off-by: Omar Sandoval osandov@fb.com Reviewed-by: David Sterba dsterba@suse.com Signed-off-by: David Sterba dsterba@suse.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- fs/btrfs/inode.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -8426,6 +8426,7 @@ static inline blk_status_t btrfs_lookup_ { struct btrfs_io_bio *io_bio = btrfs_io_bio(bio); struct btrfs_io_bio *orig_io_bio = btrfs_io_bio(dip->orig_bio); + u16 csum_size; blk_status_t ret;

/* @@ -8445,7 +8446,8 @@ static inline blk_status_t btrfs_lookup_

file_offset -= dip->logical_offset; file_offset >>= inode->i_sb->s_blocksize_bits; - io_bio->csum = (u8 *)(((u32 *)orig_io_bio->csum) + file_offset); + csum_size = btrfs_super_csum_size(btrfs_sb(inode->i_sb)->super_copy); + io_bio->csum = orig_io_bio->csum + csum_size * file_offset;

return 0; }

From: Faiz Abbas faiz_abbas@ti.com

commit fa63c0039787b8fbacf4d6a51e3ff44288f5b90b upstream.

dra76x is not affected by i887 which requires mmc3 node to be limited to a max frequency of 64 MHz. Fix this by overwriting the correct value in the the dra76 specific dtsi.

Fixes: 895bd4b3e5ec ("ARM: dts: Add support for dra76-evm") Cc: stable@vger.kernel.org Signed-off-by: Faiz Abbas faiz_abbas@ti.com Signed-off-by: Tony Lindgren tony@atomide.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- arch/arm/boot/dts/dra76x.dtsi | 5 +++++ 1 file changed, 5 insertions(+)

--- a/arch/arm/boot/dts/dra76x.dtsi +++ b/arch/arm/boot/dts/dra76x.dtsi @@ -86,3 +86,8 @@ &usb4_tm { status = "disabled"; }; + +&mmc3 { + /* dra76x is not affected by i887 */ + max-frequency = <96000000>; +};

From: Michael Walle michael@walle.cc

commit 2b2e71fe657510a6f71aa16ef0309fa6bc20ab3d upstream.

Since commit 3bc3206e1c0f ("serial: fsl_lpuart: Remove the alias node dependence") the port line number can also be allocated by IDA, but in case of an error the ID will no be removed again. More importantly, any ID will be freed in remove(), even if it wasn't allocated but instead fetched by of_alias_get_id(). If it was not allocated by IDA there will be a warning: WARN(1, "ida_free called for id=%d which is not allocated.\n", id);

Move the ID allocation more to the end of the probe() so that we still can use plain return in the first error cases.

Fixes: 3bc3206e1c0f ("serial: fsl_lpuart: Remove the alias node dependence") Signed-off-by: Michael Walle michael@walle.cc Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20200303174306.6015-3-michael@walle.cc Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/tty/serial/fsl_lpuart.c | 39 ++++++++++++++++++++++++--------------- 1 file changed, 24 insertions(+), 15 deletions(-)

--- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -268,6 +268,7 @@ struct lpuart_port { int rx_dma_rng_buf_len; unsigned int dma_tx_nents; wait_queue_head_t dma_wait; + bool id_allocated; };

struct lpuart_soc_data { @@ -2382,19 +2383,6 @@ static int lpuart_probe(struct platform_ if (!sport) return -ENOMEM;

- ret = of_alias_get_id(np, "serial"); - if (ret < 0) { - ret = ida_simple_get(&fsl_lpuart_ida, 0, UART_NR, GFP_KERNEL); - if (ret < 0) { - dev_err(&pdev->dev, "port line is full, add device failed\n"); - return ret; - } - } - if (ret >= ARRAY_SIZE(lpuart_ports)) { - dev_err(&pdev->dev, "serial%d out of range\n", ret); - return -EINVAL; - } - sport->port.line = ret; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); sport->port.membase = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(sport->port.membase)) @@ -2435,9 +2423,25 @@ static int lpuart_probe(struct platform_ } }

+ ret = of_alias_get_id(np, "serial"); + if (ret < 0) { + ret = ida_simple_get(&fsl_lpuart_ida, 0, UART_NR, GFP_KERNEL); + if (ret < 0) { + dev_err(&pdev->dev, "port line is full, add device failed\n"); + return ret; + } + sport->id_allocated = true; + } + if (ret >= ARRAY_SIZE(lpuart_ports)) { + dev_err(&pdev->dev, "serial%d out of range\n", ret); + ret = -EINVAL; + goto failed_out_of_range; + } + sport->port.line = ret; + ret = lpuart_enable_clks(sport); if (ret) - return ret; + goto failed_clock_enable; sport->port.uartclk = lpuart_get_baud_clk_rate(sport);

lpuart_ports[sport->port.line] = sport; @@ -2487,6 +2491,10 @@ static int lpuart_probe(struct platform_ failed_attach_port: failed_irq_request: lpuart_disable_clks(sport); +failed_clock_enable: +failed_out_of_range: + if (sport->id_allocated) + ida_simple_remove(&fsl_lpuart_ida, sport->port.line); return ret; }

@@ -2496,7 +2504,8 @@ static int lpuart_remove(struct platform

uart_remove_one_port(&lpuart_reg, &sport->port);

- ida_simple_remove(&fsl_lpuart_ida, sport->port.line); + if (sport->id_allocated) + ida_simple_remove(&fsl_lpuart_ida, sport->port.line);

lpuart_disable_clks(sport);

From: Jiri Slaby jslaby@suse.cz

commit 07e6124a1a46b4b5a9b3cacc0c306b50da87abf5 upstream.

syzkaller reported this UAF: BUG: KASAN: use-after-free in n_tty_receive_buf_common+0x2481/0x2940 drivers/tty/n_tty.c:1741 Read of size 1 at addr ffff8880089e40e9 by task syz-executor.1/13184

CPU: 0 PID: 13184 Comm: syz-executor.1 Not tainted 5.4.7 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: ... kasan_report+0xe/0x20 mm/kasan/common.c:634 n_tty_receive_buf_common+0x2481/0x2940 drivers/tty/n_tty.c:1741 tty_ldisc_receive_buf+0xac/0x190 drivers/tty/tty_buffer.c:461 paste_selection+0x297/0x400 drivers/tty/vt/selection.c:372 tioclinux+0x20d/0x4e0 drivers/tty/vt/vt.c:3044 vt_ioctl+0x1bcf/0x28d0 drivers/tty/vt/vt_ioctl.c:364 tty_ioctl+0x525/0x15a0 drivers/tty/tty_io.c:2657 vfs_ioctl fs/ioctl.c:47 [inline]

It is due to a race between parallel paste_selection (TIOCL_PASTESEL) and set_selection_user (TIOCL_SETSEL) invocations. One uses sel_buffer, while the other frees it and reallocates a new one for another selection. Add a mutex to close this race.

The mutex takes care properly of sel_buffer and sel_buffer_lth only. The other selection global variables (like sel_start, sel_end, and sel_cons) are protected only in set_selection_user. The other functions need quite some more work to close the races of the variables there. This is going to happen later.

This likely fixes (I am unsure as there is no reproducer provided) bug 206361 too. It was marked as CVE-2020-8648.

Signed-off-by: Jiri Slaby jslaby@suse.cz Reported-by: syzbot+59997e8d5cbdc486e6f6@syzkaller.appspotmail.com Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20200210081131.23572-2-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/tty/vt/selection.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-)

--- a/drivers/tty/vt/selection.c +++ b/drivers/tty/vt/selection.c @@ -16,6 +16,7 @@ #include <linux/tty.h> #include <linux/sched.h> #include <linux/mm.h> +#include <linux/mutex.h> #include <linux/slab.h> #include <linux/types.h>

@@ -45,6 +46,7 @@ static volatile int sel_start = -1; /* static int sel_end; static int sel_buffer_lth; static char *sel_buffer; +static DEFINE_MUTEX(sel_lock);

/* clear_selection, highlight and highlight_pointer can be called from interrupt (via scrollback/front) */ @@ -186,7 +188,7 @@ int set_selection_kernel(struct tiocl_se char *bp, *obp; int i, ps, pe, multiplier; u32 c; - int mode; + int mode, ret = 0;

poke_blanked_console();

@@ -212,6 +214,7 @@ int set_selection_kernel(struct tiocl_se if (ps > pe) /* make sel_start <= sel_end */ swap(ps, pe);

+ mutex_lock(&sel_lock); if (sel_cons != vc_cons[fg_console].d) { clear_selection(); sel_cons = vc_cons[fg_console].d; @@ -257,9 +260,10 @@ int set_selection_kernel(struct tiocl_se break; case TIOCL_SELPOINTER: highlight_pointer(pe); - return 0; + goto unlock; default: - return -EINVAL; + ret = -EINVAL; + goto unlock; }

/* remove the pointer */ @@ -281,7 +285,7 @@ int set_selection_kernel(struct tiocl_se else if (new_sel_start == sel_start) { if (new_sel_end == sel_end) /* no action required */ - return 0; + goto unlock; else if (new_sel_end > sel_end) /* extend to right */ highlight(sel_end + 2, new_sel_end); else /* contract from right */ @@ -309,7 +313,8 @@ int set_selection_kernel(struct tiocl_se if (!bp) { printk(KERN_WARNING "selection: kmalloc() failed\n"); clear_selection(); - return -ENOMEM; + ret = -ENOMEM; + goto unlock; } kfree(sel_buffer); sel_buffer = bp; @@ -334,7 +339,9 @@ int set_selection_kernel(struct tiocl_se } } sel_buffer_lth = bp - sel_buffer; - return 0; +unlock: + mutex_unlock(&sel_lock); + return ret; } EXPORT_SYMBOL_GPL(set_selection_kernel);

@@ -364,6 +371,7 @@ int paste_selection(struct tty_struct *t tty_buffer_lock_exclusive(&vc->port);

add_wait_queue(&vc->paste_wait, &wait); + mutex_lock(&sel_lock); while (sel_buffer && sel_buffer_lth > pasted) { set_current_state(TASK_INTERRUPTIBLE); if (signal_pending(current)) { @@ -371,7 +379,9 @@ int paste_selection(struct tty_struct *t break; } if (tty_throttled(tty)) { + mutex_unlock(&sel_lock); schedule(); + mutex_lock(&sel_lock); continue; } __set_current_state(TASK_RUNNING); @@ -380,6 +390,7 @@ int paste_selection(struct tty_struct *t count); pasted += count; } + mutex_unlock(&sel_lock); remove_wait_queue(&vc->paste_wait, &wait); __set_current_state(TASK_RUNNING);

From: Jiri Slaby jslaby@suse.cz

commit e8c75a30a23c6ba63f4ef6895cbf41fd42f21aa2 upstream.

sel_lock cannot nest in the console lock. Thanks to syzkaller, the kernel states firmly:

WARNING: possible circular locking dependency detected 5.6.0-rc3-syzkaller #0 Not tainted

---

syz-executor.4/20336 is trying to acquire lock: ffff8880a2e952a0 (&tty->termios_rwsem){++++}, at: tty_unthrottle+0x22/0x100 drivers/tty/tty_ioctl.c:136

but task is already holding lock: ffffffff89462e70 (sel_lock){+.+.}, at: paste_selection+0x118/0x470 drivers/tty/vt/selection.c:374

which lock already depends on the new lock.

the existing dependency chain (in reverse order) is:

-> #2 (sel_lock){+.+.}: mutex_lock_nested+0x1b/0x30 kernel/locking/mutex.c:1118 set_selection_kernel+0x3b8/0x18a0 drivers/tty/vt/selection.c:217 set_selection_user+0x63/0x80 drivers/tty/vt/selection.c:181 tioclinux+0x103/0x530 drivers/tty/vt/vt.c:3050 vt_ioctl+0x3f1/0x3a30 drivers/tty/vt/vt_ioctl.c:364

This is ioctl(TIOCL_SETSEL). Locks held on the path: console_lock -> sel_lock

-> #1 (console_lock){+.+.}: console_lock+0x46/0x70 kernel/printk/printk.c:2289 con_flush_chars+0x50/0x650 drivers/tty/vt/vt.c:3223 n_tty_write+0xeae/0x1200 drivers/tty/n_tty.c:2350 do_tty_write drivers/tty/tty_io.c:962 [inline] tty_write+0x5a1/0x950 drivers/tty/tty_io.c:1046

This is write(). Locks held on the path: termios_rwsem -> console_lock

-> #0 (&tty->termios_rwsem){++++}: down_write+0x57/0x140 kernel/locking/rwsem.c:1534 tty_unthrottle+0x22/0x100 drivers/tty/tty_ioctl.c:136 mkiss_receive_buf+0x12aa/0x1340 drivers/net/hamradio/mkiss.c:902 tty_ldisc_receive_buf+0x12f/0x170 drivers/tty/tty_buffer.c:465 paste_selection+0x346/0x470 drivers/tty/vt/selection.c:389 tioclinux+0x121/0x530 drivers/tty/vt/vt.c:3055 vt_ioctl+0x3f1/0x3a30 drivers/tty/vt/vt_ioctl.c:364

This is ioctl(TIOCL_PASTESEL). Locks held on the path: sel_lock -> termios_rwsem

other info that might help us debug this:

Chain exists of: &tty->termios_rwsem --> console_lock --> sel_lock

Clearly. From the above, we have: console_lock -> sel_lock sel_lock -> termios_rwsem termios_rwsem -> console_lock

Fix this by reversing the console_lock -> sel_lock dependency in ioctl(TIOCL_SETSEL). First, lock sel_lock, then console_lock.

Signed-off-by: Jiri Slaby jslaby@suse.cz Reported-by: syzbot+26183d9746e62da329b8@syzkaller.appspotmail.com Fixes: 07e6124a1a46 ("vt: selection, close sel_buffer race") Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20200228115406.5735-2-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/tty/vt/selection.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-)

--- a/drivers/tty/vt/selection.c +++ b/drivers/tty/vt/selection.c @@ -214,7 +214,6 @@ static int __set_selection_kernel(struct if (ps > pe) /* make sel_start <= sel_end */ swap(ps, pe);

- mutex_lock(&sel_lock); if (sel_cons != vc_cons[fg_console].d) { clear_selection(); sel_cons = vc_cons[fg_console].d; @@ -260,10 +259,9 @@ static int __set_selection_kernel(struct break; case TIOCL_SELPOINTER: highlight_pointer(pe); - goto unlock; + return 0; default: - ret = -EINVAL; - goto unlock; + return -EINVAL; }

/* remove the pointer */ @@ -285,7 +283,7 @@ static int __set_selection_kernel(struct else if (new_sel_start == sel_start) { if (new_sel_end == sel_end) /* no action required */ - goto unlock; + return 0; else if (new_sel_end > sel_end) /* extend to right */ highlight(sel_end + 2, new_sel_end); else /* contract from right */ @@ -313,8 +311,7 @@ static int __set_selection_kernel(struct if (!bp) { printk(KERN_WARNING "selection: kmalloc() failed\n"); clear_selection(); - ret = -ENOMEM; - goto unlock; + return -ENOMEM; } kfree(sel_buffer); sel_buffer = bp; @@ -339,8 +336,7 @@ static int __set_selection_kernel(struct } } sel_buffer_lth = bp - sel_buffer; -unlock: - mutex_unlock(&sel_lock); + return ret; }

@@ -348,9 +344,11 @@ int set_selection_kernel(struct tiocl_se { int ret;

+ mutex_lock(&sel_lock); console_lock(); ret = __set_selection_kernel(v, tty); console_unlock(); + mutex_unlock(&sel_lock);

return ret; }

From: Hans Verkuil hverkuil-cisco@xs4all.nl

commit 044041cd5227ec9ccf969f4bf1cc08bffe13b9d3 upstream.

These are bits so to test if a pad is a sink you use & but not ==.

It looks like the only reason this hasn't caused problems before is that media_get_pad_index() is currently only used with pads that do not set the MEDIA_PAD_FL_MUST_CONNECT flag. So a pad really had only the SINK or SOURCE flag set and nothing else.

Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Cc: stable@vger.kernel.org # for v5.3 and up Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/media/mc/mc-entity.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/media/mc/mc-entity.c +++ b/drivers/media/mc/mc-entity.c @@ -639,9 +639,9 @@ int media_get_pad_index(struct media_ent return -EINVAL;

for (i = 0; i < entity->num_pads; i++) { - if (entity->pads[i].flags == MEDIA_PAD_FL_SINK) + if (entity->pads[i].flags & MEDIA_PAD_FL_SINK) pad_is_sink = true; - else if (entity->pads[i].flags == MEDIA_PAD_FL_SOURCE) + else if (entity->pads[i].flags & MEDIA_PAD_FL_SOURCE) pad_is_sink = false; else continue; /* This is an error! */

From: Hans Verkuil hverkuil-cisco@xs4all.nl

commit 316e730f1d8bb029fe6cec2468fb2a50424485b3 upstream.

The topology that v4l2_m2m_register_media_controller() creates for a processing block actually created a source-to-source link and a sink-to-sink link instead of two source-to-sink links.

Unfortunately v4l2-compliance never checked for such bad links, so this went unreported for quite some time.

Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Reported-by: Nicolas Dufresne nicolas@ndufresne.ca Cc: stable@vger.kernel.org # for v4.19 and up Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/media/v4l2-core/v4l2-mem2mem.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -809,12 +809,12 @@ int v4l2_m2m_register_media_controller(s goto err_rel_entity1;

/* Connect the three entities */ - ret = media_create_pad_link(m2m_dev->source, 0, &m2m_dev->proc, 1, + ret = media_create_pad_link(m2m_dev->source, 0, &m2m_dev->proc, 0, MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); if (ret) goto err_rel_entity2;

- ret = media_create_pad_link(&m2m_dev->proc, 0, &m2m_dev->sink, 0, + ret = media_create_pad_link(&m2m_dev->proc, 1, &m2m_dev->sink, 0, MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); if (ret) goto err_rm_links0;

From: Wei Li liwei391@huawei.com

commit 783fed2f35e2a6771c8dc6ee29b8c4b9930783ce upstream.

In __cmd_record(), when receiving SIGINT(ctrl + c), a 'done' flag will be set and the event list will be disabled by evlist__disable() once.

While in auxtrace_record.read_finish(), the related events will be enabled again, if they are continuous, the recording seems to be endless.

If the intel_bts event is disabled, we don't enable it again here.

Note: This patch is NOT tested since i don't have such a machine with intel_bts feature, but the code seems buggy same as arm-spe and intel-pt.

Signed-off-by: Wei Li liwei391@huawei.com Cc: Jiri Olsa jolsa@redhat.com Cc: Tan Xiaojun tanxiaojun@huawei.com Cc: stable@vger.kernel.org # 5.4+ Link: http://lore.kernel.org/lkml/20200214132654.20395-3-adrian.hunter@intel.com [ahunter: removed redundant 'else' after 'return'] Signed-off-by: Adrian Hunter adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- tools/perf/arch/x86/util/intel-bts.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/tools/perf/arch/x86/util/intel-bts.c +++ b/tools/perf/arch/x86/util/intel-bts.c @@ -415,9 +415,12 @@ static int intel_bts_read_finish(struct struct evsel *evsel;

evlist__for_each_entry(btsr->evlist, evsel) { - if (evsel->core.attr.type == btsr->intel_bts_pmu->type) + if (evsel->core.attr.type == btsr->intel_bts_pmu->type) { + if (evsel->disabled) + return 0; return perf_evlist__enable_event_idx(btsr->evlist, evsel, idx); + } } return -EINVAL; }

From: Adrian Hunter adrian.hunter@intel.com

commit d6bc34c5ec18c3544c4b0d85963768dfbcd24184 upstream.

In __cmd_record(), when receiving SIGINT(ctrl + c), a 'done' flag will be set and the event list will be disabled by evlist__disable() once.

While in auxtrace_record.read_finish(), the related events will be enabled again, if they are continuous, the recording seems to be endless.

If the event is disabled, don't enable it again here.

Based-on-patch-by: Wei Li liwei391@huawei.com Signed-off-by: Adrian Hunter adrian.hunter@intel.com Cc: Jiri Olsa jolsa@redhat.com Cc: Tan Xiaojun tanxiaojun@huawei.com Cc: stable@vger.kernel.org # 5.4+ Link: http://lore.kernel.org/lkml/20200214132654.20395-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- tools/perf/arch/arm64/util/arm-spe.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/tools/perf/arch/arm64/util/arm-spe.c +++ b/tools/perf/arch/arm64/util/arm-spe.c @@ -165,9 +165,12 @@ static int arm_spe_read_finish(struct au struct evsel *evsel;

evlist__for_each_entry(sper->evlist, evsel) { - if (evsel->core.attr.type == sper->arm_spe_pmu->type) + if (evsel->core.attr.type == sper->arm_spe_pmu->type) { + if (evsel->disabled) + return 0; return perf_evlist__enable_event_idx(sper->evlist, evsel, idx); + } } return -EINVAL; }

From: Sean Christopherson sean.j.christopherson@intel.com

commit 735a6dd02222d8d070c7bb748f25895239ca8c92 upstream.

Explicitly set X86_FEATURE_OSPKE via set_cpu_cap() instead of calling get_cpu_cap() to pull the feature bit from CPUID after enabling CR4.PKE. Invoking get_cpu_cap() effectively wipes out any {set,clear}_cpu_cap() changes that were made between this_cpu->c_init() and setup_pku(), as all non-synthetic feature words are reinitialized from the CPU's CPUID values.

Blasting away capability updates manifests most visibility when running on a VMX capable CPU, but with VMX disabled by BIOS. To indicate that VMX is disabled, init_ia32_feat_ctl() clears X86_FEATURE_VMX, using clear_cpu_cap() instead of setup_clear_cpu_cap() so that KVM can report which CPU is misconfigured (KVM needs to probe every CPU anyways). Restoring X86_FEATURE_VMX from CPUID causes KVM to think VMX is enabled, ultimately leading to an unexpected #GP when KVM attempts to do VMXON.

Arguably, init_ia32_feat_ctl() should use setup_clear_cpu_cap() and let KVM figure out a different way to report the misconfigured CPU, but VMX is not the only feature bit that is affected, i.e. there is precedent that tweaking feature bits via {set,clear}_cpu_cap() after ->c_init() is expected to work. Most notably, x86_init_rdrand()'s clearing of X86_FEATURE_RDRAND when RDRAND malfunctions is also overwritten.

Fixes: 0697694564c8 ("x86/mm/pkeys: Actually enable Memory Protection Keys in the CPU") Reported-by: Jacob Keller jacob.e.keller@intel.com Signed-off-by: Sean Christopherson sean.j.christopherson@intel.com Signed-off-by: Borislav Petkov bp@suse.de Acked-by: Dave Hansen dave.hansen@linux.intel.com Tested-by: Jacob Keller jacob.e.keller@intel.com Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20200226231615.13664-1-sean.j.christopherson@intel... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- arch/x86/kernel/cpu/common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -464,7 +464,7 @@ static __always_inline void setup_pku(st * cpuid bit to be set. We need to ensure that we * update that bit in this CPU's "cpu_info". */ - get_cpu_cap(c); + set_cpu_cap(c, X86_FEATURE_OSPKE); }

#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS

From: Gerald Schaefer gerald.schaefer@de.ibm.com

commit 582b4e55403e053d8a48ff687a05174da9cc3fb0 upstream.

On s390 there currently is no implementation of pud_write(). That was ok as long as we had our own implementation of get_user_pages_fast() which checked for pud protection by testing the bit directly w/o using pud_write(). The other callers of pud_write() are not reachable on s390.

After commit 1a42010cdc26 ("s390/mm: convert to the generic get_user_pages_fast code") we use the generic get_user_pages_fast(), which does call pud_write() in pud_access_permitted() for FOLL_WRITE access on a large pud. Without an s390 specific pud_write(), the generic version is called, which contains a BUG() statement to remind us that we don't have a proper implementation. This results in a kernel panic.

Fix this by providing an implementation of pud_write().

Cc: stable@vger.kernel.org # 5.2+ Fixes: 1a42010cdc26 ("s390/mm: convert to the generic get_user_pages_fast code") Signed-off-by: Gerald Schaefer gerald.schaefer@de.ibm.com Reviewed-by: Heiko Carstens heiko.carstens@de.ibm.com Signed-off-by: Vasily Gorbik gor@linux.ibm.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- arch/s390/include/asm/pgtable.h | 6 ++++++ 1 file changed, 6 insertions(+)

--- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -756,6 +756,12 @@ static inline int pmd_write(pmd_t pmd) return (pmd_val(pmd) & _SEGMENT_ENTRY_WRITE) != 0; }

+#define pud_write pud_write +static inline int pud_write(pud_t pud) +{ + return (pud_val(pud) & _REGION3_ENTRY_WRITE) != 0; +} + static inline int pmd_dirty(pmd_t pmd) { int dirty = 1;

From: Frieder Schrempf frieder.schrempf@kontron.de

commit 25962e1a7f1d522f1b57ead2f266fab570042a70 upstream.

On i.MX6UL/ULL and i.MX6SX the DMA event id for the RX channel of UART6 is '0'. To fix the broken DMA support for UART6, we change the check for event_id0 to include '0' as a valid id.

Fixes: 1ec1e82f2510 ("dmaengine: Add Freescale i.MX SDMA support") Signed-off-by: Frieder Schrempf frieder.schrempf@kontron.de Reviewed-by: Fabio Estevam festevam@gmail.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200225082139.7646-1-frieder.schrempf@kontron.de Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/dma/imx-sdma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -1328,7 +1328,7 @@ static void sdma_free_chan_resources(str

sdma_channel_synchronize(chan);

- if (sdmac->event_id0) + if (sdmac->event_id0 >= 0) sdma_event_disable(sdmac, sdmac->event_id0); if (sdmac->event_id1) sdma_event_disable(sdmac, sdmac->event_id1); @@ -1629,7 +1629,7 @@ static int sdma_config(struct dma_chan * memcpy(&sdmac->slave_config, dmaengine_cfg, sizeof(*dmaengine_cfg));

/* Set ENBLn earlier to make sure dma request triggered after that */ - if (sdmac->event_id0) { + if (sdmac->event_id0 >= 0) { if (sdmac->event_id0 >= sdmac->sdma->drvdata->num_events) return -EINVAL; sdma_event_enable(sdmac, sdmac->event_id0);

From: Dmitry Osipenko digetx@gmail.com

commit c33ee1301c393a241d6424e36eff1071811b1064 upstream.

The interrupt handler puts a half-completed DMA descriptor on a free list and then schedules tasklet to process bottom half of the descriptor that executes client's callback, this creates possibility to pick up the busy descriptor from the free list. Thus, let's disallow descriptor's re-use until it is fully processed.

Signed-off-by: Dmitry Osipenko digetx@gmail.com Acked-by: Jon Hunter jonathanh@nvidia.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200209163356.6439-3-digetx@gmail.com Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/dma/tegra20-apb-dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -281,7 +281,7 @@ static struct tegra_dma_desc *tegra_dma_

/* Do not allocate if desc are waiting for ack */ list_for_each_entry(dma_desc, &tdc->free_dma_desc, node) { - if (async_tx_test_ack(&dma_desc->txd)) { + if (async_tx_test_ack(&dma_desc->txd) && !dma_desc->cb_count) { list_del(&dma_desc->node); spin_unlock_irqrestore(&tdc->lock, flags); dma_desc->txd.flags = 0;

From: Mikulas Patocka mpatocka@redhat.com

commit 53770f0ec5fd417429775ba006bc4abe14002335 upstream.

If we need to perform synchronous I/O in dm_integrity_map_continue(), we must make sure that we are not in the map function - in order to avoid the deadlock due to bio queuing in generic_make_request. To avoid the deadlock, we offload the request to metadata_wq.

However, metadata_wq also processes metadata updates for write requests. If there are too many requests that get offloaded to metadata_wq at the beginning of dm_integrity_map_continue, the workqueue metadata_wq becomes clogged and the system is incapable of processing any metadata updates.

This causes a deadlock because all the requests that need to do metadata updates wait for metadata_wq to proceed and metadata_wq waits inside wait_and_add_new_range until some existing request releases its range lock (which doesn't happen because the range lock is released after metadata update).

In order to fix the deadlock, we create a new workqueue offload_wq and offload requests to it - so that processing of offload_wq is independent from processing of metadata_wq.

Fixes: 7eada909bfd7 ("dm: add integrity target") Cc: stable@vger.kernel.org # v4.12+ Reported-by: Heinz Mauelshagen heinzm@redhat.com Tested-by: Heinz Mauelshagen heinzm@redhat.com Signed-off-by: Heinz Mauelshagen heinzm@redhat.com Signed-off-by: Mikulas Patocka mpatocka@redhat.com Signed-off-by: Mike Snitzer snitzer@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/md/dm-integrity.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-)

--- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -210,6 +210,7 @@ struct dm_integrity_c { struct list_head wait_list; wait_queue_head_t endio_wait; struct workqueue_struct *wait_wq; + struct workqueue_struct *offload_wq;

unsigned char commit_seq; commit_id_t commit_ids[N_COMMIT_IDS]; @@ -1434,7 +1435,7 @@ static void dec_in_flight(struct dm_inte dio->range.logical_sector += dio->range.n_sectors; bio_advance(bio, dio->range.n_sectors << SECTOR_SHIFT); INIT_WORK(&dio->work, integrity_bio_wait); - queue_work(ic->wait_wq, &dio->work); + queue_work(ic->offload_wq, &dio->work); return; } do_endio_flush(ic, dio); @@ -1860,7 +1861,7 @@ static void dm_integrity_map_continue(st

if (need_sync_io && from_map) { INIT_WORK(&dio->work, integrity_bio_wait); - queue_work(ic->metadata_wq, &dio->work); + queue_work(ic->offload_wq, &dio->work); return; }

@@ -2496,7 +2497,7 @@ static void bitmap_block_work(struct wor dio->range.n_sectors, BITMAP_OP_TEST_ALL_SET)) { remove_range(ic, &dio->range); INIT_WORK(&dio->work, integrity_bio_wait); - queue_work(ic->wait_wq, &dio->work); + queue_work(ic->offload_wq, &dio->work); } else { block_bitmap_op(ic, ic->journal, dio->range.logical_sector, dio->range.n_sectors, BITMAP_OP_SET); @@ -2519,7 +2520,7 @@ static void bitmap_block_work(struct wor

remove_range(ic, &dio->range); INIT_WORK(&dio->work, integrity_bio_wait); - queue_work(ic->wait_wq, &dio->work); + queue_work(ic->offload_wq, &dio->work); }

queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval); @@ -3825,6 +3826,14 @@ static int dm_integrity_ctr(struct dm_ta goto bad; }

+ ic->offload_wq = alloc_workqueue("dm-integrity-offload", WQ_MEM_RECLAIM, + METADATA_WORKQUEUE_MAX_ACTIVE); + if (!ic->offload_wq) { + ti->error = "Cannot allocate workqueue"; + r = -ENOMEM; + goto bad; + } + ic->commit_wq = alloc_workqueue("dm-integrity-commit", WQ_MEM_RECLAIM, 1); if (!ic->commit_wq) { ti->error = "Cannot allocate workqueue"; @@ -4129,6 +4138,8 @@ static void dm_integrity_dtr(struct dm_t destroy_workqueue(ic->metadata_wq); if (ic->wait_wq) destroy_workqueue(ic->wait_wq); + if (ic->offload_wq) + destroy_workqueue(ic->offload_wq); if (ic->commit_wq) destroy_workqueue(ic->commit_wq); if (ic->writer_wq)

From: Mikulas Patocka mpatocka@redhat.com

commit 7cdf6a0aae1cccf5167f3f04ecddcf648b78e289 upstream.

The crash can be reproduced by running the lvm2 testsuite test lvconvert-thin-external-cache.sh for several minutes, e.g.: while :; do make check T=shell/lvconvert-thin-external-cache.sh; done

The crash happens in this call chain: do_waker -> policy_tick -> smq_tick -> end_hotspot_period -> clear_bitset -> memset -> __memset -- which accesses an invalid pointer in the vmalloc area.

The work entry on the workqueue is executed even after the bitmap was freed. The problem is that cancel_delayed_work doesn't wait for the running work item to finish, so the work item can continue running and re-submitting itself even after cache_postsuspend. In order to make sure that the work item won't be running, we must use cancel_delayed_work_sync.

Also, change flush_workqueue to drain_workqueue, so that if some work item submits itself or another work item, we are properly waiting for both of them.

Fixes: c6b4fcbad044 ("dm: add cache target") Cc: stable@vger.kernel.org # v3.9 Signed-off-by: Mikulas Patocka mpatocka@redhat.com Signed-off-by: Mike Snitzer snitzer@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/md/dm-cache-target.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -2867,8 +2867,8 @@ static void cache_postsuspend(struct dm_ prevent_background_work(cache); BUG_ON(atomic_read(&cache->nr_io_migrations));

- cancel_delayed_work(&cache->waker); - flush_workqueue(cache->wq); + cancel_delayed_work_sync(&cache->waker); + drain_workqueue(cache->wq); WARN_ON(cache->tracker.in_flight);

/*

From: Mikulas Patocka mpatocka@redhat.com

commit 41c526c5af46d4c4dab7f72c99000b7fac0b9702 upstream.

Verify the watermark upon resume - so that if the target is reloaded with lower watermark, it will start the cleanup process immediately.

Fixes: 48debafe4f2f ("dm: add writecache target") Cc: stable@vger.kernel.org # 4.18+ Signed-off-by: Mikulas Patocka mpatocka@redhat.com Signed-off-by: Mike Snitzer snitzer@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/md/dm-writecache.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)

--- a/drivers/md/dm-writecache.c +++ b/drivers/md/dm-writecache.c @@ -625,6 +625,12 @@ static void writecache_add_to_freelist(s wc->freelist_size++; }

+static inline void writecache_verify_watermark(struct dm_writecache *wc) +{ + if (unlikely(wc->freelist_size + wc->writeback_size <= wc->freelist_high_watermark)) + queue_work(wc->writeback_wq, &wc->writeback_work); +} + static struct wc_entry *writecache_pop_from_freelist(struct dm_writecache *wc) { struct wc_entry *e; @@ -646,8 +652,8 @@ static struct wc_entry *writecache_pop_f list_del(&e->lru); } wc->freelist_size--; - if (unlikely(wc->freelist_size + wc->writeback_size <= wc->freelist_high_watermark)) - queue_work(wc->writeback_wq, &wc->writeback_work); + + writecache_verify_watermark(wc);

return e; } @@ -961,6 +967,8 @@ erase_this: writecache_commit_flushed(wc, false); }

+ writecache_verify_watermark(wc); + wc_unlock(wc); }

From: Hou Tao houtao1@huawei.com

commit 974f51e8633f0f3f33e8f86bbb5ae66758aa63c7 upstream.

We neither assign congested_fn for requested-based blk-mq device nor implement it correctly. So fix both.

Also, remove incorrect comment from dm_init_normal_md_queue and rename it to dm_init_congested_fn.

Fixes: 4aa9c692e052 ("bdi: separate out congested state into a separate struct") Cc: stable@vger.kernel.org Signed-off-by: Hou Tao houtao1@huawei.com Signed-off-by: Mike Snitzer snitzer@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/md/dm.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-)

--- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1809,7 +1809,8 @@ static int dm_any_congested(void *conges * With request-based DM we only need to check the * top-level queue for congestion. */ - r = md->queue->backing_dev_info->wb.state & bdi_bits; + struct backing_dev_info *bdi = md->queue->backing_dev_info; + r = bdi->wb.congested->state & bdi_bits; } else { map = dm_get_live_table_fast(md); if (map) @@ -1875,15 +1876,6 @@ static const struct dax_operations dm_da

static void dm_wq_work(struct work_struct *work);

-static void dm_init_normal_md_queue(struct mapped_device *md) -{ - /* - * Initialize aspects of queue that aren't relevant for blk-mq - */ - md->queue->backing_dev_info->congested_data = md; - md->queue->backing_dev_info->congested_fn = dm_any_congested; -} - static void cleanup_mapped_device(struct mapped_device *md) { if (md->wq) @@ -2270,6 +2262,12 @@ struct queue_limits *dm_get_queue_limits } EXPORT_SYMBOL_GPL(dm_get_queue_limits);

+static void dm_init_congested_fn(struct mapped_device *md) +{ + md->queue->backing_dev_info->congested_data = md; + md->queue->backing_dev_info->congested_fn = dm_any_congested; +} + /* * Setup the DM device's queue based on md's type */ @@ -2286,11 +2284,12 @@ int dm_setup_md_queue(struct mapped_devi DMERR("Cannot initialize queue for request-based dm-mq mapped device"); return r; } + dm_init_congested_fn(md); break; case DM_TYPE_BIO_BASED: case DM_TYPE_DAX_BIO_BASED: case DM_TYPE_NVME_BIO_BASED: - dm_init_normal_md_queue(md); + dm_init_congested_fn(md); break; case DM_TYPE_NONE: WARN_ON_ONCE(true);

From: Vladimir Oltean olteanv@gmail.com

commit 7155c44624d061692b4c13aa8343f119c67d4fc0 upstream.

The difference between "fsl,etsec2-mdio" and "gianfar" has to do with the .get_tbipa function, which calculates the address of the TBIPA register automatically, if not explicitly specified. [ see drivers/net/ethernet/freescale/fsl_pq_mdio.c ]. On LS1021A, the TBIPA register is at offset 0x30 within the port register block, which is what the "gianfar" method of calculating addresses actually does.

Luckily, the bad "compatible" is inconsequential for ls1021a.dtsi, because the TBIPA register is explicitly specified via the second "reg" (<0x0 0x2d10030 0x0 0x4>), so the "get_tbipa" function is dead code. Nonetheless it's good to restore it to its correct value.

Background discussion: https://www.spinics.net/lists/stable/msg361156.html

Fixes: c7861adbe37f ("ARM: dts: ls1021: Fix SGMII PCS link remaining down after PHY disconnect") Reported-by: Pavel Machek pavel@denx.de Signed-off-by: Vladimir Oltean olteanv@gmail.com Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- arch/arm/boot/dts/ls1021a.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/arm/boot/dts/ls1021a.dtsi +++ b/arch/arm/boot/dts/ls1021a.dtsi @@ -728,7 +728,7 @@ };

mdio0: mdio@2d24000 { - compatible = "fsl,etsec2-mdio"; + compatible = "gianfar"; device_type = "mdio"; #address-cells = <1>; #size-cells = <0>; @@ -737,7 +737,7 @@ };

mdio1: mdio@2d64000 { - compatible = "fsl,etsec2-mdio"; + compatible = "gianfar"; device_type = "mdio"; #address-cells = <1>; #size-cells = <0>;

From: Gerd Hoffmann kraxel@redhat.com

commit 3e93bc2a58aa241081e043ef9e6e86c42808499a upstream.

Also update the comment with a reference to the virglrenderer fix.

Signed-off-by: Gerd Hoffmann kraxel@redhat.com Reviewed-by: Chia-I Wu olvaffe@gmail.com Link: http://patchwork.freedesktop.org/patch/msgid/20190822102614.18164-1-kraxel@r... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/gpu/drm/virtio/virtgpu_object.c | 44 +++++++++++++++++--------------- 1 file changed, 24 insertions(+), 20 deletions(-)

--- a/drivers/gpu/drm/virtio/virtgpu_object.c +++ b/drivers/gpu/drm/virtio/virtgpu_object.c @@ -27,34 +27,38 @@

#include "virtgpu_drv.h"

+static int virtio_gpu_virglrenderer_workaround = 1; +module_param_named(virglhack, virtio_gpu_virglrenderer_workaround, int, 0400); + static int virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev, uint32_t *resid) { -#if 0 - int handle = ida_alloc(&vgdev->resource_ida, GFP_KERNEL); - - if (handle < 0) - return handle; -#else - static int handle; - - /* - * FIXME: dirty hack to avoid re-using IDs, virglrenderer - * can't deal with that. Needs fixing in virglrenderer, also - * should figure a better way to handle that in the guest. - */ - handle++; -#endif - - *resid = handle + 1; + if (virtio_gpu_virglrenderer_workaround) { + /* + * Hack to avoid re-using resource IDs. + * + * virglrenderer versions up to (and including) 0.7.0 + * can't deal with that. virglrenderer commit + * "f91a9dd35715 Fix unlinking resources from hash + * table." (Feb 2019) fixes the bug. + */ + static int handle; + handle++; + *resid = handle + 1; + } else { + int handle = ida_alloc(&vgdev->resource_ida, GFP_KERNEL); + if (handle < 0) + return handle; + *resid = handle + 1; + } return 0; }

static void virtio_gpu_resource_id_put(struct virtio_gpu_device *vgdev, uint32_t id) { -#if 0 - ida_free(&vgdev->resource_ida, id - 1); -#endif + if (!virtio_gpu_virglrenderer_workaround) { + ida_free(&vgdev->resource_ida, id - 1); + } }

static void virtio_gpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)

From: Dragos Tarcatu dragos_tarcatu@mentor.com

commit 2b2d5c4db732c027a14987cfccf767dac1b45170 upstream.

If soc_tplg_link_config() fails, _link needs to be freed in case of topology ABI version mismatch. However the current code is returning directly and ends up leaking memory in this case. This patch fixes that.

Fixes: 593d9e52f9bb ("ASoC: topology: Add support to configure existing physical DAI links") Signed-off-by: Dragos Tarcatu dragos_tarcatu@mentor.com Link: https://lore.kernel.org/r/20200207185325.22320-2-dragos_tarcatu@mentor.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- sound/soc/soc-topology.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -2320,8 +2320,11 @@ static int soc_tplg_link_elems_load(stru }

ret = soc_tplg_link_config(tplg, _link); - if (ret < 0) + if (ret < 0) { + if (!abi_match) + kfree(_link); return ret; + }

/* offset by version-specific struct size and * real priv data size

From: Dan Carpenter dan.carpenter@oracle.com

commit 613cea5935e83cb5a7d182ee3f98d54620e102e2 upstream.

We're passing "&posn" instead of "posn" so it ends up corrupting memory instead of doing something useful.

Fixes: 53e0c72d98ba ("ASoC: SOF: Add support for IPC IO between DSP and Host") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Reviewed-by: Kai Vehmanen kai.vehmanen@linux.intel.com Link: https://lore.kernel.org/r/20200303101858.ytehbrivocyp3cnf@kili.mountain Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- sound/soc/sof/ipc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/soc/sof/ipc.c +++ b/sound/soc/sof/ipc.c @@ -497,7 +497,7 @@ int snd_sof_ipc_stream_posn(struct snd_s

/* send IPC to the DSP */ err = sof_ipc_tx_message(sdev->ipc, - stream.hdr.cmd, &stream, sizeof(stream), &posn, + stream.hdr.cmd, &stream, sizeof(stream), posn, sizeof(*posn)); if (err < 0) { dev_err(sdev->dev, "error: failed to get stream %d position\n",

From: Takashi Iwai tiwai@suse.de

commit 549cd0ba04dcfe340c349cd983bd440480fae8ee upstream.

The debugfs output of intel skl driver writes strings with multiple snprintf() calls with the fixed size. This was supposed to avoid the buffer overflow but actually it still would, because snprintf() returns the expected size to be output, not the actual output size.

Fix it by replacing snprintf() calls with scnprintf().

Fixes: d14700a01f91 ("ASoC: Intel: Skylake: Debugfs facility to dump module config") Signed-off-by: Takashi Iwai tiwai@suse.de Acked-by: Cezary Rojewski cezary.rojewski@intel.com Link: https://lore.kernel.org/r/20200218111737.14193-3-tiwai@suse.de Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- sound/soc/intel/skylake/skl-debug.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-)

--- a/sound/soc/intel/skylake/skl-debug.c +++ b/sound/soc/intel/skylake/skl-debug.c @@ -35,7 +35,7 @@ static ssize_t skl_print_pins(struct skl ssize_t ret = 0;

for (i = 0; i < max_pin; i++) { - ret += snprintf(buf + size, MOD_BUF - size, + ret += scnprintf(buf + size, MOD_BUF - size, "%s %d\n\tModule %d\n\tInstance %d\n\t" "In-used %s\n\tType %s\n" "\tState %d\n\tIndex %d\n", @@ -53,7 +53,7 @@ static ssize_t skl_print_pins(struct skl static ssize_t skl_print_fmt(struct skl_module_fmt *fmt, char *buf, ssize_t size, bool direction) { - return snprintf(buf + size, MOD_BUF - size, + return scnprintf(buf + size, MOD_BUF - size, "%s\n\tCh %d\n\tFreq %d\n\tBit depth %d\n\t" "Valid bit depth %d\n\tCh config %#x\n\tInterleaving %d\n\t" "Sample Type %d\n\tCh Map %#x\n", @@ -77,16 +77,16 @@ static ssize_t module_read(struct file * if (!buf) return -ENOMEM;

- ret = snprintf(buf, MOD_BUF, "Module:\n\tUUID %pUL\n\tModule id %d\n" + ret = scnprintf(buf, MOD_BUF, "Module:\n\tUUID %pUL\n\tModule id %d\n" "\tInstance id %d\n\tPvt_id %d\n", mconfig->guid, mconfig->id.module_id, mconfig->id.instance_id, mconfig->id.pvt_id);

- ret += snprintf(buf + ret, MOD_BUF - ret, + ret += scnprintf(buf + ret, MOD_BUF - ret, "Resources:\n\tCPC %#x\n\tIBS %#x\n\tOBS %#x\t\n", res->cpc, res->ibs, res->obs);

- ret += snprintf(buf + ret, MOD_BUF - ret, + ret += scnprintf(buf + ret, MOD_BUF - ret, "Module data:\n\tCore %d\n\tIn queue %d\n\t" "Out queue %d\n\tType %s\n", mconfig->core_id, mconfig->max_in_queue, @@ -96,38 +96,38 @@ static ssize_t module_read(struct file * ret += skl_print_fmt(mconfig->in_fmt, buf, ret, true); ret += skl_print_fmt(mconfig->out_fmt, buf, ret, false);

- ret += snprintf(buf + ret, MOD_BUF - ret, + ret += scnprintf(buf + ret, MOD_BUF - ret, "Fixup:\n\tParams %#x\n\tConverter %#x\n", mconfig->params_fixup, mconfig->converter);

- ret += snprintf(buf + ret, MOD_BUF - ret, + ret += scnprintf(buf + ret, MOD_BUF - ret, "Module Gateway:\n\tType %#x\n\tVbus %#x\n\tHW conn %#x\n\tSlot %#x\n", mconfig->dev_type, mconfig->vbus_id, mconfig->hw_conn_type, mconfig->time_slot);

- ret += snprintf(buf + ret, MOD_BUF - ret, + ret += scnprintf(buf + ret, MOD_BUF - ret, "Pipeline:\n\tID %d\n\tPriority %d\n\tConn Type %d\n\t" "Pages %#x\n", mconfig->pipe->ppl_id, mconfig->pipe->pipe_priority, mconfig->pipe->conn_type, mconfig->pipe->memory_pages);

- ret += snprintf(buf + ret, MOD_BUF - ret, + ret += scnprintf(buf + ret, MOD_BUF - ret, "\tParams:\n\t\tHost DMA %d\n\t\tLink DMA %d\n", mconfig->pipe->p_params->host_dma_id, mconfig->pipe->p_params->link_dma_id);

- ret += snprintf(buf + ret, MOD_BUF - ret, + ret += scnprintf(buf + ret, MOD_BUF - ret, "\tPCM params:\n\t\tCh %d\n\t\tFreq %d\n\t\tFormat %d\n", mconfig->pipe->p_params->ch, mconfig->pipe->p_params->s_freq, mconfig->pipe->p_params->s_fmt);

- ret += snprintf(buf + ret, MOD_BUF - ret, + ret += scnprintf(buf + ret, MOD_BUF - ret, "\tLink %#x\n\tStream %#x\n", mconfig->pipe->p_params->linktype, mconfig->pipe->p_params->stream);

- ret += snprintf(buf + ret, MOD_BUF - ret, + ret += scnprintf(buf + ret, MOD_BUF - ret, "\tState %d\n\tPassthru %s\n", mconfig->pipe->state, mconfig->pipe->passthru ? "true" : "false"); @@ -137,7 +137,7 @@ static ssize_t module_read(struct file * ret += skl_print_pins(mconfig->m_out_pin, buf, mconfig->max_out_queue, ret, false);

- ret += snprintf(buf + ret, MOD_BUF - ret, + ret += scnprintf(buf + ret, MOD_BUF - ret, "Other:\n\tDomain %d\n\tHomogeneous Input %s\n\t" "Homogeneous Output %s\n\tIn Queue Mask %d\n\t" "Out Queue Mask %d\n\tDMA ID %d\n\tMem Pages %d\n\t" @@ -193,7 +193,7 @@ static ssize_t fw_softreg_read(struct fi __ioread32_copy(d->fw_read_buff, fw_reg_addr, w0_stat_sz >> 2);

for (offset = 0; offset < FW_REG_SIZE; offset += 16) { - ret += snprintf(tmp + ret, FW_REG_BUF - ret, "%#.4x: ", offset); + ret += scnprintf(tmp + ret, FW_REG_BUF - ret, "%#.4x: ", offset); hex_dump_to_buffer(d->fw_read_buff + offset, 16, 16, 4, tmp + ret, FW_REG_BUF - ret, 0); ret += strlen(tmp + ret);

From: Alastair D'Silva alastair@d-silva.org

[ Upstream commit 23eb7f560a2a6a1b0dbaaaae8685da75314347e4 ]

Similar to commit 22e9c88d486a ("powerpc/64: reuse PPC32 static inline flush_dcache_range()") this patch converts the following ASM symbols to C: flush_icache_range() __flush_dcache_icache() __flush_dcache_icache_phys()

This was done as we discovered a long-standing bug where the length of the range was truncated due to using a 32 bit shift instead of a 64 bit one.

By converting these functions to C, it becomes easier to maintain.

flush_dcache_icache_phys() retains a critical assembler section as we must ensure there are no memory accesses while the data MMU is disabled (authored by Christophe Leroy). Since this has no external callers, it has also been made static, allowing the compiler to inline it within flush_dcache_icache_page().

Signed-off-by: Alastair D'Silva alastair@d-silva.org Signed-off-by: Christophe Leroy christophe.leroy@c-s.fr Signed-off-by: Michael Ellerman mpe@ellerman.id.au [mpe: Minor fixups, don't export __flush_dcache_icache()] Link: https://lore.kernel.org/r/20191104023305.9581-5-alastair@au1.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/include/asm/cache.h | 26 ++--- arch/powerpc/include/asm/cacheflush.h | 24 ++--- arch/powerpc/kernel/misc_32.S | 120 --------------------- arch/powerpc/kernel/misc_64.S | 102 ------------------ arch/powerpc/mm/mem.c | 150 +++++++++++++++++++++++++- 5 files changed, 170 insertions(+), 252 deletions(-)

diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h index afb88754e0e07..72b81015cebe9 100644 --- a/arch/powerpc/include/asm/cache.h +++ b/arch/powerpc/include/asm/cache.h @@ -96,22 +96,7 @@ static inline u32 l1_icache_bytes(void) }

#endif -#endif /* ! __ASSEMBLY__ */ - -#if defined(__ASSEMBLY__) -/* - * For a snooping icache, we still need a dummy icbi to purge all the - * prefetched instructions from the ifetch buffers. We also need a sync - * before the icbi to order the the actual stores to memory that might - * have modified instructions with the icbi. - */ -#define PURGE_PREFETCHED_INS \ - sync; \ - icbi 0,r3; \ - sync; \ - isync

-#else #define __read_mostly __attribute__((__section__(".data..read_mostly")))

#ifdef CONFIG_PPC_BOOK3S_32 @@ -145,6 +130,17 @@ static inline void dcbst(void *addr) { __asm__ __volatile__ ("dcbst 0, %0" : : "r"(addr) : "memory"); } + +static inline void icbi(void *addr) +{ + asm volatile ("icbi 0, %0" : : "r"(addr) : "memory"); +} + +static inline void iccci(void *addr) +{ + asm volatile ("iccci 0, %0" : : "r"(addr) : "memory"); +} + #endif /* !__ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_CACHE_H */ diff --git a/arch/powerpc/include/asm/cacheflush.h b/arch/powerpc/include/asm/cacheflush.h index ed57843ef4524..4a1c9f0200e1b 100644 --- a/arch/powerpc/include/asm/cacheflush.h +++ b/arch/powerpc/include/asm/cacheflush.h @@ -42,24 +42,20 @@ extern void flush_dcache_page(struct page *page); #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0)

-extern void flush_icache_range(unsigned long, unsigned long); +void flush_icache_range(unsigned long start, unsigned long stop); extern void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, unsigned long addr, int len); -extern void __flush_dcache_icache(void *page_va); extern void flush_dcache_icache_page(struct page *page); -#if defined(CONFIG_PPC32) && !defined(CONFIG_BOOKE) -extern void __flush_dcache_icache_phys(unsigned long physaddr); -#else -static inline void __flush_dcache_icache_phys(unsigned long physaddr) -{ - BUG(); -} -#endif - -/* - * Write any modified data cache blocks out to memory and invalidate them. - * Does not invalidate the corresponding instruction cache blocks. +void __flush_dcache_icache(void *page); + +/** + * flush_dcache_range(): Write any modified data cache blocks out to memory and + * invalidate them. Does not invalidate the corresponding instruction cache + * blocks. + * + * @start: the start address + * @stop: the stop address (exclusive) */ static inline void flush_dcache_range(unsigned long start, unsigned long stop) { diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 82df4b09e79f4..f4e4a1926a7a5 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -316,126 +316,6 @@ _GLOBAL(flush_instruction_cache) EXPORT_SYMBOL(flush_instruction_cache) #endif /* CONFIG_PPC_8xx */

-/* - * Write any modified data cache blocks out to memory - * and invalidate the corresponding instruction cache blocks. - * This is a no-op on the 601. - * - * flush_icache_range(unsigned long start, unsigned long stop) - */ -_GLOBAL(flush_icache_range) -#if defined(CONFIG_PPC_BOOK3S_601) || defined(CONFIG_E200) - PURGE_PREFETCHED_INS - blr /* for 601 and e200, do nothing */ -#else - rlwinm r3,r3,0,0,31 - L1_CACHE_SHIFT - subf r4,r3,r4 - addi r4,r4,L1_CACHE_BYTES - 1 - srwi. r4,r4,L1_CACHE_SHIFT - beqlr - mtctr r4 - mr r6,r3 -1: dcbst 0,r3 - addi r3,r3,L1_CACHE_BYTES - bdnz 1b - sync /* wait for dcbst's to get to ram */ -#ifndef CONFIG_44x - mtctr r4 -2: icbi 0,r6 - addi r6,r6,L1_CACHE_BYTES - bdnz 2b -#else - /* Flash invalidate on 44x because we are passed kmapped addresses and - this doesn't work for userspace pages due to the virtually tagged - icache. Sigh. */ - iccci 0, r0 -#endif - sync /* additional sync needed on g4 */ - isync - blr -#endif -_ASM_NOKPROBE_SYMBOL(flush_icache_range) -EXPORT_SYMBOL(flush_icache_range) - -/* - * Flush a particular page from the data cache to RAM. - * Note: this is necessary because the instruction cache does *not* - * snoop from the data cache. - * This is a no-op on the 601 and e200 which have a unified cache. - * - * void __flush_dcache_icache(void *page) - */ -_GLOBAL(__flush_dcache_icache) -#if defined(CONFIG_PPC_BOOK3S_601) || defined(CONFIG_E200) - PURGE_PREFETCHED_INS - blr -#else - rlwinm r3,r3,0,0,31-PAGE_SHIFT /* Get page base address */ - li r4,PAGE_SIZE/L1_CACHE_BYTES /* Number of lines in a page */ - mtctr r4 - mr r6,r3 -0: dcbst 0,r3 /* Write line to ram */ - addi r3,r3,L1_CACHE_BYTES - bdnz 0b - sync -#ifdef CONFIG_44x - /* We don't flush the icache on 44x. Those have a virtual icache - * and we don't have access to the virtual address here (it's - * not the page vaddr but where it's mapped in user space). The - * flushing of the icache on these is handled elsewhere, when - * a change in the address space occurs, before returning to - * user space - */ -BEGIN_MMU_FTR_SECTION - blr -END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_44x) -#endif /* CONFIG_44x */ - mtctr r4 -1: icbi 0,r6 - addi r6,r6,L1_CACHE_BYTES - bdnz 1b - sync - isync - blr -#endif - -#ifndef CONFIG_BOOKE -/* - * Flush a particular page from the data cache to RAM, identified - * by its physical address. We turn off the MMU so we can just use - * the physical address (this may be a highmem page without a kernel - * mapping). - * - * void __flush_dcache_icache_phys(unsigned long physaddr) - */ -_GLOBAL(__flush_dcache_icache_phys) -#if defined(CONFIG_PPC_BOOK3S_601) || defined(CONFIG_E200) - PURGE_PREFETCHED_INS - blr /* for 601 and e200, do nothing */ -#else - mfmsr r10 - rlwinm r0,r10,0,28,26 /* clear DR */ - mtmsr r0 - isync - rlwinm r3,r3,0,0,31-PAGE_SHIFT /* Get page base address */ - li r4,PAGE_SIZE/L1_CACHE_BYTES /* Number of lines in a page */ - mtctr r4 - mr r6,r3 -0: dcbst 0,r3 /* Write line to ram */ - addi r3,r3,L1_CACHE_BYTES - bdnz 0b - sync - mtctr r4 -1: icbi 0,r6 - addi r6,r6,L1_CACHE_BYTES - bdnz 1b - sync - mtmsr r10 /* restore DR */ - isync - blr -#endif -#endif /* CONFIG_BOOKE */ - /* * Copy a whole page. We use the dcbz instruction on the destination * to reduce memory traffic (it eliminates the unnecessary reads of diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index 9bc0aa9aeb654..ff20c253f2737 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S @@ -49,108 +49,6 @@ _GLOBAL(call_do_irq) mtlr r0 blr

- .section ".toc","aw" -PPC64_CACHES: - .tc ppc64_caches[TC],ppc64_caches - .section ".text" - -/* - * Write any modified data cache blocks out to memory - * and invalidate the corresponding instruction cache blocks. - * - * flush_icache_range(unsigned long start, unsigned long stop) - * - * flush all bytes from start through stop-1 inclusive - */ - -_GLOBAL_TOC(flush_icache_range) -BEGIN_FTR_SECTION - PURGE_PREFETCHED_INS - blr -END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE) -/* - * Flush the data cache to memory - * - * Different systems have different cache line sizes - * and in some cases i-cache and d-cache line sizes differ from - * each other. - */ - ld r10,PPC64_CACHES@toc(r2) - lwz r7,DCACHEL1BLOCKSIZE(r10)/* Get cache block size */ - addi r5,r7,-1 - andc r6,r3,r5 /* round low to line bdy */ - subf r8,r6,r4 /* compute length */ - add r8,r8,r5 /* ensure we get enough */ - lwz r9,DCACHEL1LOGBLOCKSIZE(r10) /* Get log-2 of cache block size */ - srd. r8,r8,r9 /* compute line count */ - beqlr /* nothing to do? */ - mtctr r8 -1: dcbst 0,r6 - add r6,r6,r7 - bdnz 1b - sync - -/* Now invalidate the instruction cache */ - - lwz r7,ICACHEL1BLOCKSIZE(r10) /* Get Icache block size */ - addi r5,r7,-1 - andc r6,r3,r5 /* round low to line bdy */ - subf r8,r6,r4 /* compute length */ - add r8,r8,r5 - lwz r9,ICACHEL1LOGBLOCKSIZE(r10) /* Get log-2 of Icache block size */ - srd. r8,r8,r9 /* compute line count */ - beqlr /* nothing to do? */ - mtctr r8 -2: icbi 0,r6 - add r6,r6,r7 - bdnz 2b - isync - blr -_ASM_NOKPROBE_SYMBOL(flush_icache_range) -EXPORT_SYMBOL(flush_icache_range) - -/* - * Flush a particular page from the data cache to RAM. - * Note: this is necessary because the instruction cache does *not* - * snoop from the data cache. - * - * void __flush_dcache_icache(void *page) - */ -_GLOBAL(__flush_dcache_icache) -/* - * Flush the data cache to memory - * - * Different systems have different cache line sizes - */ - -BEGIN_FTR_SECTION - PURGE_PREFETCHED_INS - blr -END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE) - -/* Flush the dcache */ - ld r7,PPC64_CACHES@toc(r2) - clrrdi r3,r3,PAGE_SHIFT /* Page align */ - lwz r4,DCACHEL1BLOCKSPERPAGE(r7) /* Get # dcache blocks per page */ - lwz r5,DCACHEL1BLOCKSIZE(r7) /* Get dcache block size */ - mr r6,r3 - mtctr r4 -0: dcbst 0,r6 - add r6,r6,r5 - bdnz 0b - sync - -/* Now invalidate the icache */ - - lwz r4,ICACHEL1BLOCKSPERPAGE(r7) /* Get # icache blocks per page */ - lwz r5,ICACHEL1BLOCKSIZE(r7) /* Get icache block size */ - mtctr r4 -1: icbi 0,r3 - add r3,r3,r5 - bdnz 1b - isync - blr - _GLOBAL(__bswapdi2) EXPORT_SYMBOL(__bswapdi2) srdi r8,r3,32 diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 9f5b32163bda3..6612796ea69c2 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -348,6 +348,120 @@ void free_initmem(void) free_initmem_default(POISON_FREE_INITMEM); }

+/** + * flush_coherent_icache() - if a CPU has a coherent icache, flush it + * @addr: The base address to use (can be any valid address, the whole cache will be flushed) + * Return true if the cache was flushed, false otherwise + */ +static inline bool flush_coherent_icache(unsigned long addr) +{ + /* + * For a snooping icache, we still need a dummy icbi to purge all the + * prefetched instructions from the ifetch buffers. We also need a sync + * before the icbi to order the the actual stores to memory that might + * have modified instructions with the icbi. + */ + if (cpu_has_feature(CPU_FTR_COHERENT_ICACHE)) { + mb(); /* sync */ + icbi((void *)addr); + mb(); /* sync */ + isync(); + return true; + } + + return false; +} + +/** + * invalidate_icache_range() - Flush the icache by issuing icbi across an address range + * @start: the start address + * @stop: the stop address (exclusive) + */ +static void invalidate_icache_range(unsigned long start, unsigned long stop) +{ + unsigned long shift = l1_icache_shift(); + unsigned long bytes = l1_icache_bytes(); + char *addr = (char *)(start & ~(bytes - 1)); + unsigned long size = stop - (unsigned long)addr + (bytes - 1); + unsigned long i; + + for (i = 0; i < size >> shift; i++, addr += bytes) + icbi(addr); + + mb(); /* sync */ + isync(); +} + +/** + * flush_icache_range: Write any modified data cache blocks out to memory + * and invalidate the corresponding blocks in the instruction cache + * + * Generic code will call this after writing memory, before executing from it. + * + * @start: the start address + * @stop: the stop address (exclusive) + */ +void flush_icache_range(unsigned long start, unsigned long stop) +{ + if (flush_coherent_icache(start)) + return; + + clean_dcache_range(start, stop); + + if (IS_ENABLED(CONFIG_44x)) { + /* + * Flash invalidate on 44x because we are passed kmapped + * addresses and this doesn't work for userspace pages due to + * the virtually tagged icache. + */ + iccci((void *)start); + mb(); /* sync */ + isync(); + } else + invalidate_icache_range(start, stop); +} +EXPORT_SYMBOL(flush_icache_range); + +#if !defined(CONFIG_PPC_8xx) && !defined(CONFIG_PPC64) +/** + * flush_dcache_icache_phys() - Flush a page by it's physical address + * @physaddr: the physical address of the page + */ +static void flush_dcache_icache_phys(unsigned long physaddr) +{ + unsigned long bytes = l1_dcache_bytes(); + unsigned long nb = PAGE_SIZE / bytes; + unsigned long addr = physaddr & PAGE_MASK; + unsigned long msr, msr0; + unsigned long loop1 = addr, loop2 = addr; + + msr0 = mfmsr(); + msr = msr0 & ~MSR_DR; + /* + * This must remain as ASM to prevent potential memory accesses + * while the data MMU is disabled + */ + asm volatile( + " mtctr %2;\n" + " mtmsr %3;\n" + " isync;\n" + "0: dcbst 0, %0;\n" + " addi %0, %0, %4;\n" + " bdnz 0b;\n" + " sync;\n" + " mtctr %2;\n" + "1: icbi 0, %1;\n" + " addi %1, %1, %4;\n" + " bdnz 1b;\n" + " sync;\n" + " mtmsr %5;\n" + " isync;\n" + : "+&r" (loop1), "+&r" (loop2) + : "r" (nb), "r" (msr), "i" (bytes), "r" (msr0) + : "ctr", "memory"); +} +#endif // !defined(CONFIG_PPC_8xx) && !defined(CONFIG_PPC64) + /* * This is called when a page has been modified by the kernel. * It just marks the page as not i-cache clean. We do the i-cache @@ -380,12 +494,46 @@ void flush_dcache_icache_page(struct page *page) __flush_dcache_icache(start); kunmap_atomic(start); } else { - __flush_dcache_icache_phys(page_to_pfn(page) << PAGE_SHIFT); + unsigned long addr = page_to_pfn(page) << PAGE_SHIFT; + + if (flush_coherent_icache(addr)) + return; + flush_dcache_icache_phys(addr); } #endif } EXPORT_SYMBOL(flush_dcache_icache_page);

+/** + * __flush_dcache_icache(): Flush a particular page from the data cache to RAM. + * Note: this is necessary because the instruction cache does *not* + * snoop from the data cache. + * + * @page: the address of the page to flush + */ +void __flush_dcache_icache(void *p) +{ + unsigned long addr = (unsigned long)p; + + if (flush_coherent_icache(addr)) + return; + + clean_dcache_range(addr, addr + PAGE_SIZE); + + /* + * We don't flush the icache on 44x. Those have a virtual icache and we + * don't have access to the virtual address here (it's not the page + * vaddr but where it's mapped in user space). The flushing of the + * icache on these is handled elsewhere, when a change in the address + * space occurs, before returning to user space. + */ + + if (cpu_has_feature(MMU_FTR_TYPE_44x)) + return; + + invalidate_icache_range(addr, addr + PAGE_SIZE); +} + void clear_user_page(void *page, unsigned long vaddr, struct page *pg) { clear_page(page);

From: Takashi Iwai tiwai@suse.de

commit 6c89ffea60aa3b2a33ae7987de1e84bfb89e4c9e upstream.

dpcm_show_state() invokes multiple snprintf() calls to concatenate formatted strings on the fixed size buffer. The usage of snprintf() is supposed for avoiding the buffer overflow, but it doesn't work as expected because snprintf() doesn't return the actual output size but the size to be written.

Fix this bug by replacing all snprintf() calls with scnprintf() calls.

Fixes: f86dcef87b77 ("ASoC: dpcm: Add debugFS support for DPCM") Signed-off-by: Takashi Iwai tiwai@suse.de Acked-by: Cezary Rojewski cezary.rojewski@intel.com Link: https://lore.kernel.org/r/20200218111737.14193-4-tiwai@suse.de Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- sound/soc/soc-pcm.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-)

--- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -3169,16 +3169,16 @@ static ssize_t dpcm_show_state(struct sn unsigned long flags;

/* FE state */ - offset += snprintf(buf + offset, size - offset, + offset += scnprintf(buf + offset, size - offset, "[%s - %s]\n", fe->dai_link->name, stream ? "Capture" : "Playback");

- offset += snprintf(buf + offset, size - offset, "State: %s\n", + offset += scnprintf(buf + offset, size - offset, "State: %s\n", dpcm_state_string(fe->dpcm[stream].state));

if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) - offset += snprintf(buf + offset, size - offset, + offset += scnprintf(buf + offset, size - offset, "Hardware Params: " "Format = %s, Channels = %d, Rate = %d\n", snd_pcm_format_name(params_format(params)), @@ -3186,10 +3186,10 @@ static ssize_t dpcm_show_state(struct sn params_rate(params));

/* BEs state */ - offset += snprintf(buf + offset, size - offset, "Backends:\n"); + offset += scnprintf(buf + offset, size - offset, "Backends:\n");

if (list_empty(&fe->dpcm[stream].be_clients)) { - offset += snprintf(buf + offset, size - offset, + offset += scnprintf(buf + offset, size - offset, " No active DSP links\n"); goto out; } @@ -3199,16 +3199,16 @@ static ssize_t dpcm_show_state(struct sn struct snd_soc_pcm_runtime *be = dpcm->be; params = &dpcm->hw_params;

- offset += snprintf(buf + offset, size - offset, + offset += scnprintf(buf + offset, size - offset, "- %s\n", be->dai_link->name);

- offset += snprintf(buf + offset, size - offset, + offset += scnprintf(buf + offset, size - offset, " State: %s\n", dpcm_state_string(be->dpcm[stream].state));

if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) - offset += snprintf(buf + offset, size - offset, + offset += scnprintf(buf + offset, size - offset, " Hardware Params: " "Format = %s, Channels = %d, Rate = %d\n", snd_pcm_format_name(params_format(params)),

From: Amadeusz Sławiński amadeuszx.slawinski@linux.intel.com

commit 8308a09e87d2cb51adb186dc7d5a5c1913fb0758 upstream.

Incrementation of avail_clk_cnt was incorrectly moved to error path. Put it back to success path.

Fixes: 6ee927f2f01466 ('ASoC: Intel: Skylake: Fix NULL ptr dereference when unloading clk dev') Signed-off-by: Amadeusz Sławiński amadeuszx.slawinski@linux.intel.com Reviewed-by: Cezary Rojewski cezary.rojewski@intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Link: https://lore.kernel.org/r/20200224125202.13784-1-amadeuszx.slawinski@linux.i... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- sound/soc/intel/skylake/skl-ssp-clk.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/sound/soc/intel/skylake/skl-ssp-clk.c +++ b/sound/soc/intel/skylake/skl-ssp-clk.c @@ -384,9 +384,11 @@ static int skl_clk_dev_probe(struct plat &clks[i], clk_pdata, i);

if (IS_ERR(data->clk[data->avail_clk_cnt])) { - ret = PTR_ERR(data->clk[data->avail_clk_cnt++]); + ret = PTR_ERR(data->clk[data->avail_clk_cnt]); goto err_unreg_skl_clk; } + + data->avail_clk_cnt++; }

platform_set_drvdata(pdev, data);

From: Tudor Ambarus tudor.ambarus@microchip.com

commit 8e093ea4d3593379be46b845b9e823179558047e upstream.

The QSPI controller memory space is limited to 128MB: 0x9000_00000-0x9800_00000/0XD000_0000--0XD800_0000.

There are nor flashes that are bigger in size than the memory size supported by the controller: Micron MT25QL02G (256 MB).

Check if the address exceeds the MMIO window size. An improvement would be to add support for regular SPI mode and fall back to it when the flash memories overrun the controller's memory space.

Fixes: 0e6aae08e9ae ("spi: Add QuadSPI driver for Atmel SAMA5D2") Signed-off-by: Tudor Ambarus tudor.ambarus@microchip.com Link: https://lore.kernel.org/r/20200228155437.1558219-1-tudor.ambarus@microchip.c... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/spi/atmel-quadspi.c | 11 +++++++++++ 1 file changed, 11 insertions(+)

--- a/drivers/spi/atmel-quadspi.c +++ b/drivers/spi/atmel-quadspi.c @@ -149,6 +149,7 @@ struct atmel_qspi { struct clk *qspick; struct platform_device *pdev; const struct atmel_qspi_caps *caps; + resource_size_t mmap_size; u32 pending; u32 mr; u32 scr; @@ -329,6 +330,14 @@ static int atmel_qspi_exec_op(struct spi u32 sr, offset; int err;

+ /* + * Check if the address exceeds the MMIO window size. An improvement + * would be to add support for regular SPI mode and fall back to it + * when the flash memories overrun the controller's memory space. + */ + if (op->addr.val + op->data.nbytes > aq->mmap_size) + return -ENOTSUPP; + err = atmel_qspi_set_cfg(aq, op, &offset); if (err) return err; @@ -480,6 +489,8 @@ static int atmel_qspi_probe(struct platf goto exit; }

+ aq->mmap_size = resource_size(res); + /* Get the peripheral clock */ aq->pclk = devm_clk_get(&pdev->dev, "pclk"); if (IS_ERR(aq->pclk))

From: John Stultz john.stultz@linaro.org

commit 1b79cfd99ff5127e6a143767b51694a527b3ea38 upstream.

This reverts commit ff57c6513820efe945b61863cf4a51b79f18b592.

With the commit ff57c6513820 ("drm: kirin: Fix for hikey620 display offset problem") we added support for handling LDI overflows by resetting the hardware.

However, its been observed that when we do hit the LDI overflow condition, the irq seems to be screaming, and we do nothing but stream: [drm:ade_irq_handler [kirin_drm]] *ERROR* LDI underflow! over and over to the screen

I've tried a few appraoches to avoid this, but none has yet been successful and the cure here is worse then the original disease, so revert this for now.

Cc: Xinliang Liu xinliang.liu@linaro.org Cc: Rongrong Zou zourongrong@gmail.com Cc: Xinwei Kong kong.kongxinwei@hisilicon.com Cc: Chen Feng puck.chen@hisilicon.com Cc: Sam Ravnborg sam@ravnborg.org Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Cc: dri-devel dri-devel@lists.freedesktop.org Fixes: ff57c6513820 ("drm: kirin: Fix for hikey620 display offset problem") Signed-off-by: John Stultz john.stultz@linaro.org Acked-by: Xinliang Liu xinliang.liu@linaro.org Signed-off-by: Xinliang Liu xinliang.liu@linaro.org Link: https://patchwork.freedesktop.org/patch/msgid/20200303163228.52741-1-john.st... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/gpu/drm/hisilicon/kirin/kirin_ade_reg.h | 1 - drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c | 20 -------------------- 2 files changed, 21 deletions(-)

--- a/drivers/gpu/drm/hisilicon/kirin/kirin_ade_reg.h +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_ade_reg.h @@ -83,7 +83,6 @@ #define VSIZE_OFST 20 #define LDI_INT_EN 0x741C #define FRAME_END_INT_EN_OFST 1 -#define UNDERFLOW_INT_EN_OFST 2 #define LDI_CTRL 0x7420 #define BPP_OFST 3 #define DATA_GATE_EN BIT(2) --- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c @@ -46,7 +46,6 @@ struct ade_hw_ctx { struct clk *media_noc_clk; struct clk *ade_pix_clk; struct reset_control *reset; - struct work_struct display_reset_wq; bool power_on; int irq;

@@ -136,7 +135,6 @@ static void ade_init(struct ade_hw_ctx * */ ade_update_bits(base + ADE_CTRL, FRM_END_START_OFST, FRM_END_START_MASK, REG_EFFECTIVE_IN_ADEEN_FRMEND); - ade_update_bits(base + LDI_INT_EN, UNDERFLOW_INT_EN_OFST, MASK(1), 1); }

static bool ade_crtc_mode_fixup(struct drm_crtc *crtc, @@ -304,17 +302,6 @@ static void ade_crtc_disable_vblank(stru MASK(1), 0); }

-static void drm_underflow_wq(struct work_struct *work) -{ - struct ade_hw_ctx *ctx = container_of(work, struct ade_hw_ctx, - display_reset_wq); - struct drm_device *drm_dev = ctx->crtc->dev; - struct drm_atomic_state *state; - - state = drm_atomic_helper_suspend(drm_dev); - drm_atomic_helper_resume(drm_dev, state); -} - static irqreturn_t ade_irq_handler(int irq, void *data) { struct ade_hw_ctx *ctx = data; @@ -331,12 +318,6 @@ static irqreturn_t ade_irq_handler(int i MASK(1), 1); drm_crtc_handle_vblank(crtc); } - if (status & BIT(UNDERFLOW_INT_EN_OFST)) { - ade_update_bits(base + LDI_INT_CLR, UNDERFLOW_INT_EN_OFST, - MASK(1), 1); - DRM_ERROR("LDI underflow!"); - schedule_work(&ctx->display_reset_wq); - }

return IRQ_HANDLED; } @@ -919,7 +900,6 @@ static void *ade_hw_ctx_alloc(struct pla if (ret) return ERR_PTR(-EIO);

- INIT_WORK(&ctx->display_reset_wq, drm_underflow_wq); ctx->crtc = crtc;

return ctx;

From: Jernej Skrabec jernej.skrabec@siol.net

commit 20896ef137340e9426cf322606f764452f5eb960 upstream.

DE2 VI layer doesn't support blending which means alpha channel is ignored. Replace all formats with alpha with "don't care" (X) channel.

Fixes: 7480ba4d7571 ("drm/sun4i: Add support for DE2 VI planes") Acked-by: Maxime Ripard mripard@kernel.org Signed-off-by: Jernej Skrabec jernej.skrabec@siol.net Link: https://patchwork.freedesktop.org/patch/msgid/20200224173901.174016-4-jernej... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/gpu/drm/sun4i/sun8i_mixer.c | 56 +++++++++++++++++++++++++++++++++ drivers/gpu/drm/sun4i/sun8i_vi_layer.c | 22 ++++++------ 2 files changed, 67 insertions(+), 11 deletions(-)

--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c +++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c @@ -107,46 +107,102 @@ static const struct de2_fmt_info de2_for .csc = SUN8I_CSC_MODE_OFF, }, { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_XRGB4444, + .de2_fmt = SUN8I_MIXER_FBFMT_ARGB4444, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { .drm_fmt = DRM_FORMAT_ABGR4444, .de2_fmt = SUN8I_MIXER_FBFMT_ABGR4444, .rgb = true, .csc = SUN8I_CSC_MODE_OFF, }, { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_XBGR4444, + .de2_fmt = SUN8I_MIXER_FBFMT_ABGR4444, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { .drm_fmt = DRM_FORMAT_RGBA4444, .de2_fmt = SUN8I_MIXER_FBFMT_RGBA4444, .rgb = true, .csc = SUN8I_CSC_MODE_OFF, }, { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_RGBX4444, + .de2_fmt = SUN8I_MIXER_FBFMT_RGBA4444, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { .drm_fmt = DRM_FORMAT_BGRA4444, .de2_fmt = SUN8I_MIXER_FBFMT_BGRA4444, .rgb = true, .csc = SUN8I_CSC_MODE_OFF, }, { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_BGRX4444, + .de2_fmt = SUN8I_MIXER_FBFMT_BGRA4444, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { .drm_fmt = DRM_FORMAT_ARGB1555, .de2_fmt = SUN8I_MIXER_FBFMT_ARGB1555, .rgb = true, .csc = SUN8I_CSC_MODE_OFF, }, { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_XRGB1555, + .de2_fmt = SUN8I_MIXER_FBFMT_ARGB1555, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { .drm_fmt = DRM_FORMAT_ABGR1555, .de2_fmt = SUN8I_MIXER_FBFMT_ABGR1555, .rgb = true, .csc = SUN8I_CSC_MODE_OFF, }, { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_XBGR1555, + .de2_fmt = SUN8I_MIXER_FBFMT_ABGR1555, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { .drm_fmt = DRM_FORMAT_RGBA5551, .de2_fmt = SUN8I_MIXER_FBFMT_RGBA5551, .rgb = true, .csc = SUN8I_CSC_MODE_OFF, }, { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_RGBX5551, + .de2_fmt = SUN8I_MIXER_FBFMT_RGBA5551, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { .drm_fmt = DRM_FORMAT_BGRA5551, .de2_fmt = SUN8I_MIXER_FBFMT_BGRA5551, .rgb = true, .csc = SUN8I_CSC_MODE_OFF, + }, + { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_BGRX5551, + .de2_fmt = SUN8I_MIXER_FBFMT_BGRA5551, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, }, { .drm_fmt = DRM_FORMAT_ARGB2101010, --- a/drivers/gpu/drm/sun4i/sun8i_vi_layer.c +++ b/drivers/gpu/drm/sun4i/sun8i_vi_layer.c @@ -398,26 +398,26 @@ static const struct drm_plane_funcs sun8 };

/* - * While all RGB formats are supported, VI planes don't support - * alpha blending, so there is no point having formats with alpha - * channel if their opaque analog exist. + * While DE2 VI layer supports same RGB formats as UI layer, alpha + * channel is ignored. This structure lists all unique variants + * where alpha channel is replaced with "don't care" (X) channel. */ static const u32 sun8i_vi_layer_formats[] = { - DRM_FORMAT_ABGR1555, - DRM_FORMAT_ABGR4444, - DRM_FORMAT_ARGB1555, - DRM_FORMAT_ARGB4444, DRM_FORMAT_BGR565, DRM_FORMAT_BGR888, - DRM_FORMAT_BGRA5551, - DRM_FORMAT_BGRA4444, + DRM_FORMAT_BGRX4444, + DRM_FORMAT_BGRX5551, DRM_FORMAT_BGRX8888, DRM_FORMAT_RGB565, DRM_FORMAT_RGB888, - DRM_FORMAT_RGBA4444, - DRM_FORMAT_RGBA5551, + DRM_FORMAT_RGBX4444, + DRM_FORMAT_RGBX5551, DRM_FORMAT_RGBX8888, + DRM_FORMAT_XBGR1555, + DRM_FORMAT_XBGR4444, DRM_FORMAT_XBGR8888, + DRM_FORMAT_XRGB1555, + DRM_FORMAT_XRGB4444, DRM_FORMAT_XRGB8888,

DRM_FORMAT_NV16,

From: Matt Roper matthew.d.roper@intel.com

commit c725161924f9a5872a3e53b73345a6026a5c170e upstream.

It wasn't terribly clear from the bspec's wording, but after discussion with the hardware folks, it turns out that we need to preserve the pre-existing contents of the MBUS ABOX control register when initializing a few specific bits.

Bspec: 49213 Bspec: 50096 Fixes: 4cb4585e5a7f ("drm/i915/icl: initialize MBus during display init") Cc: Stanislav Lisovskiy stanislav.lisovskiy@intel.com Signed-off-by: Matt Roper matthew.d.roper@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20200204011032.582737-1-matthe... Reviewed-by: Matt Atwood matthew.s.atwood@intel.com (cherry picked from commit 837b63e6087838d0f1e612d448405419199d8033) Signed-off-by: Jani Nikula jani.nikula@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20200228004320.127142-1-matthe... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/gpu/drm/i915/display/intel_display_power.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-)

--- a/drivers/gpu/drm/i915/display/intel_display_power.c +++ b/drivers/gpu/drm/i915/display/intel_display_power.c @@ -4205,13 +4205,19 @@ static void icl_dbuf_disable(struct drm_

static void icl_mbus_init(struct drm_i915_private *dev_priv) { - u32 val; + u32 mask, val;

- val = MBUS_ABOX_BT_CREDIT_POOL1(16) | - MBUS_ABOX_BT_CREDIT_POOL2(16) | - MBUS_ABOX_B_CREDIT(1) | - MBUS_ABOX_BW_CREDIT(1); + mask = MBUS_ABOX_BT_CREDIT_POOL1_MASK | + MBUS_ABOX_BT_CREDIT_POOL2_MASK | + MBUS_ABOX_B_CREDIT_MASK | + MBUS_ABOX_BW_CREDIT_MASK;

+ val = I915_READ(MBUS_ABOX_CTL); + val &= ~mask; + val |= MBUS_ABOX_BT_CREDIT_POOL1(16) | + MBUS_ABOX_BT_CREDIT_POOL2(16) | + MBUS_ABOX_B_CREDIT(1) | + MBUS_ABOX_BW_CREDIT(1); I915_WRITE(MBUS_ABOX_CTL, val); }

From: Tony Lindgren tony@atomide.com

commit be4e3c737eebd75815633f4b8fd766defaf0f1fc upstream.

We have an interrupt handler for the wake-up GPIO pin, but we're missing the code to wake-up the system. This can cause timeouts receiving data for the UART that shares the wake-up GPIO pin with the USB PHY.

All we need to do is just wake the system and kick the autosuspend timeout to fix the issue.

Fixes: 5d1ebbda0318 ("phy: mapphone-mdm6600: Add USB PHY driver for MDM6600 on Droid 4") Cc: Marcel Partap mpartap@gmx.net Cc: Merlijn Wajer merlijn@wizzup.org Cc: Michael Scott hashcode0f@gmail.com Cc: NeKit nekit1000@gmail.com Cc: Pavel Machek pavel@ucw.cz Cc: Sebastian Reichel sre@kernel.org Signed-off-by: Tony Lindgren tony@atomide.com Signed-off-by: Kishon Vijay Abraham I kishon@ti.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/phy/motorola/phy-mapphone-mdm6600.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-)

--- a/drivers/phy/motorola/phy-mapphone-mdm6600.c +++ b/drivers/phy/motorola/phy-mapphone-mdm6600.c @@ -243,10 +243,24 @@ static irqreturn_t phy_mdm6600_wakeirq_t { struct phy_mdm6600 *ddata = data; struct gpio_desc *mode_gpio1; + int error, wakeup;

mode_gpio1 = ddata->mode_gpios->desc[PHY_MDM6600_MODE1]; - dev_dbg(ddata->dev, "OOB wake on mode_gpio1: %i\n", - gpiod_get_value(mode_gpio1)); + wakeup = gpiod_get_value(mode_gpio1); + if (!wakeup) + return IRQ_NONE; + + dev_dbg(ddata->dev, "OOB wake on mode_gpio1: %i\n", wakeup); + error = pm_runtime_get_sync(ddata->dev); + if (error < 0) { + pm_runtime_put_noidle(ddata->dev); + + return IRQ_NONE; + } + + /* Just wake-up and kick the autosuspend timer */ + pm_runtime_mark_last_busy(ddata->dev); + pm_runtime_put_autosuspend(ddata->dev);

return IRQ_HANDLED; }

From: Marco Felsch m.felsch@pengutronix.de

commit eb0bbba7636b9fc81939d6087a5fe575e150c95a upstream.

Currently the vmmc is supplied by the 1.8V pmic rail but this is wrong. The default module behaviour is to power VCCQ and VCC by the 3.3V power rail. Optional the user can connect the VCCQ to the pmic 1.8V emmc power rail using a solder jumper.

Fixes: ddec5d1c0047 ("ARM: dts: imx6: Add initial support for phyCORE-i.MX 6 SOM") Signed-off-by: Marco Felsch m.felsch@pengutronix.de Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi | 1 - 1 file changed, 1 deletion(-)

--- a/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi +++ b/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi @@ -183,7 +183,6 @@ pinctrl-0 = <&pinctrl_usdhc4>; bus-width = <8>; non-removable; - vmmc-supply = <&vdd_emmc_1p8>; status = "disabled"; };

From: Leonard Crestez leonard.crestez@nxp.com

commit 1e6a4eba693ac72e6f91b4252458c933110e5f4c upstream.

The imx SC api strongly assumes that messages are composed out of 4-bytes words but some of our message structs have odd sizeofs.

This produces many oopses with CONFIG_KASAN=y:

BUG: KASAN: stack-out-of-bounds in imx_mu_send_data+0x108/0x1f0

It shouldn't cause an issues in normal use because these structs are always allocated on the stack.

Fixes: 15e1f2bc8b3b ("firmware: imx: add misc svc support") Signed-off-by: Leonard Crestez leonard.crestez@nxp.com Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/firmware/imx/misc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/firmware/imx/misc.c +++ b/drivers/firmware/imx/misc.c @@ -16,7 +16,7 @@ struct imx_sc_msg_req_misc_set_ctrl { u32 ctrl; u32 val; u16 resource; -} __packed; +} __packed __aligned(4);

struct imx_sc_msg_req_cpu_start { struct imx_sc_rpc_msg hdr; @@ -30,12 +30,12 @@ struct imx_sc_msg_req_misc_get_ctrl { struct imx_sc_rpc_msg hdr; u32 ctrl; u16 resource; -} __packed; +} __packed __aligned(4);

struct imx_sc_msg_resp_misc_get_ctrl { struct imx_sc_rpc_msg hdr; u32 val; -} __packed; +} __packed __aligned(4);

/* * This function sets a miscellaneous control value.

From: Leonard Crestez leonard.crestez@nxp.com

commit f5bfeff44612d304deb100065a9f712309dc2783 upstream.

The imx SC api strongly assumes that messages are composed out of 4-bytes words but some of our message structs have odd sizeofs.

This produces many oopses with CONFIG_KASAN=y.

Fix by marking with __aligned(4).

Fixes: d90bf296ae18 ("firmware: imx: Add support to start/stop a CPU") Signed-off-by: Leonard Crestez leonard.crestez@nxp.com Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/firmware/imx/misc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/firmware/imx/misc.c +++ b/drivers/firmware/imx/misc.c @@ -24,7 +24,7 @@ struct imx_sc_msg_req_cpu_start { u32 address_lo; u16 resource; u8 enable; -} __packed; +} __packed __aligned(4);

struct imx_sc_msg_req_misc_get_ctrl { struct imx_sc_rpc_msg hdr;

From: Parav Pandit parav@mellanox.com

commit e4103312d7b7afb8a3a7a842a33ef2b1856b2c0f upstream.

This reverts commit 219d2e9dfda9431b808c28d5efc74b404b95b638.

The call chain below requires the cm_id_priv's destination address to be setup before performing rdma_bind_addr(). Otherwise source port allocation fails as cma_port_is_unique() no longer sees the correct tuple to allow duplicate users of the source port.

rdma_resolve_addr() cma_bind_addr() rdma_bind_addr() cma_get_port() cma_alloc_any_port() cma_port_is_unique() <- compared with zero daddr

This can result in false failures to connect, particularly if the source port range is restricted.

Fixes: 219d2e9dfda9 ("RDMA/cma: Simplify rdma_resolve_addr() error flow") Link: https://lore.kernel.org/r/20200212072635.682689-4-leon@kernel.org Signed-off-by: Parav Pandit parav@mellanox.com Signed-off-by: Leon Romanovsky leonro@mellanox.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/infiniband/core/cma.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)

--- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -3155,19 +3155,26 @@ int rdma_resolve_addr(struct rdma_cm_id int ret;

id_priv = container_of(id, struct rdma_id_private, id); + memcpy(cma_dst_addr(id_priv), dst_addr, rdma_addr_size(dst_addr)); if (id_priv->state == RDMA_CM_IDLE) { ret = cma_bind_addr(id, src_addr, dst_addr); - if (ret) + if (ret) { + memset(cma_dst_addr(id_priv), 0, + rdma_addr_size(dst_addr)); return ret; + } }

- if (cma_family(id_priv) != dst_addr->sa_family) + if (cma_family(id_priv) != dst_addr->sa_family) { + memset(cma_dst_addr(id_priv), 0, rdma_addr_size(dst_addr)); return -EINVAL; + }

- if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY)) + if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY)) { + memset(cma_dst_addr(id_priv), 0, rdma_addr_size(dst_addr)); return -EINVAL; + }

- memcpy(cma_dst_addr(id_priv), dst_addr, rdma_addr_size(dst_addr)); if (cma_any_addr(dst_addr)) { ret = cma_resolve_loopback(id_priv); } else {

From: Mark Zhang markz@mellanox.com

commit 78f34a16c28654cb47791257006f90d0948f2f0c upstream.

This fixes the kernel crash when a RDMA_NLDEV_CMD_STAT_SET command is received, but the QP number parameter is not available.

iwpm_register_pid: Unable to send a nlmsg (client = 2) infiniband syz1: RDMA CMA: cma_listen_on_dev, error -98 general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 9754 Comm: syz-executor069 Not tainted 5.6.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:nla_get_u32 include/net/netlink.h:1474 [inline] RIP: 0010:nldev_stat_set_doit+0x63c/0xb70 drivers/infiniband/core/nldev.c:1760 Code: fc 01 0f 84 58 03 00 00 e8 41 83 bf fb 4c 8b a3 58 fd ff ff 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 6d RSP: 0018:ffffc900068bf350 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: ffffc900068bf728 RCX: ffffffff85b60470 RDX: 0000000000000000 RSI: ffffffff85b6047f RDI: 0000000000000004 RBP: ffffc900068bf750 R08: ffff88808c3ee140 R09: ffff8880a25e6010 R10: ffffed10144bcddc R11: ffff8880a25e6ee3 R12: 0000000000000000 R13: ffff88809acb0000 R14: ffff888092a42c80 R15: 000000009ef2e29a FS: 0000000001ff0880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4733e34000 CR3: 00000000a9b27000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:195 [inline] rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] rdma_nl_rcv+0x5d9/0x980 drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x59e/0x7e0 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:672 ____sys_sendmsg+0x753/0x880 net/socket.c:2343 ___sys_sendmsg+0x100/0x170 net/socket.c:2397 __sys_sendmsg+0x105/0x1d0 net/socket.c:2430 __do_sys_sendmsg net/socket.c:2439 [inline] __se_sys_sendmsg net/socket.c:2437 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2437 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4403d9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc0efbc5c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004403d9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 00000000006ca018 R08: 0000000000000008 R09: 00000000004002c8 R10: 000000000000004a R11: 0000000000000246 R12: 0000000000401c60 R13: 0000000000401cf0 R14: 0000000000000000 R15: 0000000000000000

Fixes: b389327df905 ("RDMA/nldev: Allow counter manual mode configration through RDMA netlink") Link: https://lore.kernel.org/r/20200227125111.99142-1-leon@kernel.org Reported-by: syzbot+bd4af81bc51ee0283445@syzkaller.appspotmail.com Signed-off-by: Mark Zhang markz@mellanox.com Signed-off-by: Leon Romanovsky leonro@mellanox.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/infiniband/core/nldev.c | 2 ++ 1 file changed, 2 insertions(+)

--- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -1711,6 +1711,8 @@ static int nldev_stat_set_doit(struct sk if (ret) goto err_msg; } else { + if (!tb[RDMA_NLDEV_ATTR_RES_LQPN]) + goto err_msg; qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]); if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) { cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);

From: Bernard Metzler bmt@zurich.ibm.com

commit 810dbc69087b08fd53e1cdd6c709f385bc2921ad upstream.

The dealloc_work_entries() function must update the work_free_list pointer while freeing its entries, since potentially called again on same list. A second iteration of the work list caused system crash. This happens, if work allocation fails during cma_iw_listen() and free_cm_id() tries to free the list again during cleanup.

Fixes: 922a8e9fb2e0 ("RDMA: iWARP Connection Manager.") Link: https://lore.kernel.org/r/20200302181614.17042-1-bmt@zurich.ibm.com Reported-by: syzbot+cb0c054eabfba4342146@syzkaller.appspotmail.com Signed-off-by: Bernard Metzler bmt@zurich.ibm.com Reviewed-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/infiniband/core/iwcm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/core/iwcm.c +++ b/drivers/infiniband/core/iwcm.c @@ -159,8 +159,10 @@ static void dealloc_work_entries(struct { struct list_head *e, *tmp;

- list_for_each_safe(e, tmp, &cm_id_priv->work_free_list) + list_for_each_safe(e, tmp, &cm_id_priv->work_free_list) { + list_del(e); kfree(list_entry(e, struct iwcm_work, free_list)); + } }

static int alloc_work_entries(struct iwcm_id_private *cm_id_priv, int count)

From: Fabrice Gasnier fabrice.gasnier@st.com

commit 02fbabd5f4ed182d2c616e49309f5a3efd9ec671 upstream.

There maybe an overshoot, when disabling, then re-enabling vrefbuf too quickly. VREFBUF is used by ADC/DAC on some boards. When re-enabling too quickly, an overshoot on the reference voltage make the conversions inaccurate for a short period of time. - Don't put the VREFBUF in HiZ when disabling, to force an active discharge. - Enforce a 1ms OFF/ON delay

Fixes: 0cdbf481e927 ("regulator: Add support for stm32-vrefbuf")

Signed-off-by: Fabrice Gasnier fabrice.gasnier@st.com Message-Id: 1583312132-20932-1-git-send-email-fabrice.gasnier@st.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/regulator/stm32-vrefbuf.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/regulator/stm32-vrefbuf.c +++ b/drivers/regulator/stm32-vrefbuf.c @@ -88,7 +88,7 @@ static int stm32_vrefbuf_disable(struct }

val = readl_relaxed(priv->base + STM32_VREFBUF_CSR); - val = (val & ~STM32_ENVR) | STM32_HIZ; + val &= ~STM32_ENVR; writel_relaxed(val, priv->base + STM32_VREFBUF_CSR);

pm_runtime_mark_last_busy(priv->dev); @@ -175,6 +175,7 @@ static const struct regulator_desc stm32 .volt_table = stm32_vrefbuf_voltages, .n_voltages = ARRAY_SIZE(stm32_vrefbuf_voltages), .ops = &stm32_vrefbuf_volt_ops, + .off_on_delay = 1000, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, };

From: Dennis Dalessandro dennis.dalessandro@intel.com

commit 817a68a6584aa08e323c64283fec5ded7be84759 upstream.

The packet handling function, specifically the iteration of the qp list for mad packet processing misses locking RCU before running through the list. Not only is this incorrect, but the list_for_each_entry_rcu() call can not be called with a conditional check for lock dependency. Remedy this by invoking the rcu lock and unlock around the critical section.

This brings MAD packet processing in line with what is done for non-MAD packets.

Fixes: 7724105686e7 ("IB/hfi1: add driver files") Link: https://lore.kernel.org/r/20200225195445.140896.41873.stgit@awfm-01.aw.intel... Reviewed-by: Mike Marciniszyn mike.marciniszyn@intel.com Signed-off-by: Dennis Dalessandro dennis.dalessandro@intel.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/infiniband/hw/hfi1/verbs.c | 4 +++- drivers/infiniband/hw/qib/qib_verbs.c | 2 ++ 2 files changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/hw/hfi1/verbs.c +++ b/drivers/infiniband/hw/hfi1/verbs.c @@ -515,10 +515,11 @@ static inline void hfi1_handle_packet(st opa_get_lid(packet->dlid, 9B)); if (!mcast) goto drop; + rcu_read_lock(); list_for_each_entry_rcu(p, &mcast->qp_list, list) { packet->qp = p->qp; if (hfi1_do_pkey_check(packet)) - goto drop; + goto unlock_drop; spin_lock_irqsave(&packet->qp->r_lock, flags); packet_handler = qp_ok(packet); if (likely(packet_handler)) @@ -527,6 +528,7 @@ static inline void hfi1_handle_packet(st ibp->rvp.n_pkt_drops++; spin_unlock_irqrestore(&packet->qp->r_lock, flags); } + rcu_read_unlock(); /* * Notify rvt_multicast_detach() if it is waiting for us * to finish. --- a/drivers/infiniband/hw/qib/qib_verbs.c +++ b/drivers/infiniband/hw/qib/qib_verbs.c @@ -329,8 +329,10 @@ void qib_ib_rcv(struct qib_ctxtdata *rcd if (mcast == NULL) goto drop; this_cpu_inc(ibp->pmastats->n_multicast_rcv); + rcu_read_lock(); list_for_each_entry_rcu(p, &mcast->qp_list, list) qib_qp_rcv(rcd, hdr, 1, data, tlen, p->qp); + rcu_read_unlock(); /* * Notify rvt_multicast_detach() if it is waiting for us * to finish.

From: Suman Anna s-anna@ti.com

commit 31623468be0bf57617b8057dcd335693935a9491 upstream.

The commit 337c6c9a69af ("ARM: dts: am437x-idk-evm: Disable OPP50 for MPU") adjusts couple of OPP nodes defined in the common am4372.dtsi file, but used outdated node names. This results in these getting treated as new OPP nodes with missing properties.

Fix this properly by using the correct node names as updated in commit b9cb2ba71848 ("ARM: dts: Use - instead of @ for DT OPP entries for TI SoCs").

Reported-by: Roger Quadros rogerq@ti.com Fixes: 337c6c9a69af ("ARM: dts: am437x-idk-evm: Disable OPP50 for MPU") Signed-off-by: Suman Anna s-anna@ti.com Signed-off-by: Tony Lindgren tony@atomide.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- arch/arm/boot/dts/am437x-idk-evm.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/arm/boot/dts/am437x-idk-evm.dts +++ b/arch/arm/boot/dts/am437x-idk-evm.dts @@ -526,11 +526,11 @@ * Supply voltage supervisor on board will not allow opp50 so * disable it and set opp100 as suspend OPP. */ - opp50@300000000 { + opp50-300000000 { status = "disabled"; };

- opp100@600000000 { + opp100-600000000 { opp-suspend; }; };

From: Johan Hovold johan@kernel.org

commit bcbf53a0dab50980867476994f6079c1ec5bb3a3 upstream.

The sram-node compatible properties have mistakingly combined the model-specific string with the generic "mtd-ram" string.

Note that neither "cy7c1019dv33-10zsxi, mtd-ram" or "cy7c1019dv33-10zsxi" are used by any in-kernel driver and they are not present in any binding.

The physmap driver will however bind to platform devices that specify "mtd-ram".

Fixes: fc48e76489fd ("ARM: dts: imx6: Add support for Toradex Colibri iMX6 module") Cc: Sanchayan Maity maitysanchayan@gmail.com Cc: Marcel Ziswiler marcel.ziswiler@toradex.com Cc: Shawn Guo shawnguo@kernel.org Signed-off-by: Johan Hovold johan@kernel.org Reviewed-by: Oleksandr Suvorov oleksandr.suvorov@toradex.com Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- arch/arm/boot/dts/imx6dl-colibri-eval-v3.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/arm/boot/dts/imx6dl-colibri-eval-v3.dts +++ b/arch/arm/boot/dts/imx6dl-colibri-eval-v3.dts @@ -236,7 +236,7 @@

/* SRAM on Colibri nEXT_CS0 */ sram@0,0 { - compatible = "cypress,cy7c1019dv33-10zsxi, mtd-ram"; + compatible = "cypress,cy7c1019dv33-10zsxi", "mtd-ram"; reg = <0 0 0x00010000>; #address-cells = <1>; #size-cells = <1>; @@ -247,7 +247,7 @@

/* SRAM on Colibri nEXT_CS1 */ sram@1,0 { - compatible = "cypress,cy7c1019dv33-10zsxi, mtd-ram"; + compatible = "cypress,cy7c1019dv33-10zsxi", "mtd-ram"; reg = <1 0 0x00010000>; #address-cells = <1>; #size-cells = <1>;

From: Dan Carpenter dan.carpenter@oracle.com

commit 44f2f882909fedfc3a56e4b90026910456019743 upstream.

This is only called from adt7462_update_device(). The caller expects it to return zero on error. I fixed a similar issue earlier in commit a4bf06d58f21 ("hwmon: (adt7462) ADT7462_REG_VOLT_MAX() should return 0") but I missed this one.

Fixes: c0b4e3ab0c76 ("adt7462: new hwmon driver") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Reviewed-by: Darrick J. Wong darrick.wong@oracle.com Link: https://lore.kernel.org/r/20200303101608.kqjwfcazu2ylhi2a@kili.mountain Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/hwmon/adt7462.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/hwmon/adt7462.c +++ b/drivers/hwmon/adt7462.c @@ -413,7 +413,7 @@ static int ADT7462_REG_VOLT(struct adt74 return 0x95; break; } - return -ENODEV; + return 0; }

/* Provide labels for sysfs */

From: Dan Carpenter dan.carpenter@oracle.com

commit 36d5d22090d13fd3a7a8c9663a711cbe6970aac8 upstream.

The caller is already holding the lock so this will deadlock.

Fixes: 0b58828c923e ("DMAENGINE: COH 901 318 remove irq counting") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Link: https://lore.kernel.org/r/20200217144050.3i4ymbytogod4ijn@kili.mountain Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/dma/coh901318.c | 4 ---- 1 file changed, 4 deletions(-)

--- a/drivers/dma/coh901318.c +++ b/drivers/dma/coh901318.c @@ -1947,8 +1947,6 @@ static void dma_tc_handle(struct coh9013 return; }

- spin_lock(&cohc->lock); - /* * When we reach this point, at least one queue item * should have been moved over from cohc->queue to @@ -1969,8 +1967,6 @@ static void dma_tc_handle(struct coh9013 if (coh901318_queue_start(cohc) == NULL) cohc->busy = 0;

- spin_unlock(&cohc->lock); - /* * This tasklet will remove items from cohc->active * and thus terminates them.

From: Tony Lindgren tony@atomide.com

commit aec551c7a00fb7eae049c0c4cc3208ca53e26355 upstream.

Because of the i2c quirk we have the reset quirks named in a confusing way. Let's fix the 1-wire quirk accordinlyg. Then let's switch to using better naming later on.

Fixes: 4e23be473e30 ("bus: ti-sysc: Add support for module specific reset quirks") Signed-off-by: Tony Lindgren tony@atomide.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/bus/ti-sysc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -1406,7 +1406,7 @@ static void sysc_init_revision_quirks(st }

/* 1-wire needs module's internal clocks enabled for reset */ -static void sysc_clk_enable_quirk_hdq1w(struct sysc *ddata) +static void sysc_pre_reset_quirk_hdq1w(struct sysc *ddata) { int offset = 0x0c; /* HDQ_CTRL_STATUS */ u16 val; @@ -1494,7 +1494,7 @@ static void sysc_init_module_quirks(stru return;

if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_HDQ1W) { - ddata->clk_enable_quirk = sysc_clk_enable_quirk_hdq1w; + ddata->clk_disable_quirk = sysc_pre_reset_quirk_hdq1w;

return; }

From: Desnes A. Nunes do Rosario desnesn@linux.ibm.com

commit fc37a1632d40c80c067eb1bc235139f5867a2667 upstream.

PowerVM systems running compatibility mode on a few Power8 revisions are still vulnerable to the hardware defect that loses PMU exceptions arriving prior to a context switch.

The software fix for this issue is enabled through the CPU_FTR_PMAO_BUG cpu_feature bit, nevertheless this bit also needs to be set for PowerVM compatibility mode systems.

Fixes: 68f2f0d431d9ea4 ("powerpc: Add a cpu feature CPU_FTR_PMAO_BUG") Signed-off-by: Desnes A. Nunes do Rosario desnesn@linux.ibm.com Reviewed-by: Leonardo Bras leonardo@linux.ibm.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20200227134715.9715-1-desnesn@linux.ibm.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org