From: Jean Delvare jdelvare@suse.de
[ Upstream commit 3f9e12e0df012c4a9a7fd7eb0d3ae69b459d6b2c ]
In case the WDAT interface is broken, give the user an option to ignore it to let a native driver bind to the watchdog device instead.
Signed-off-by: Jean Delvare jdelvare@suse.de Acked-by: Mika Westerberg mika.westerberg@linux.intel.com Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- Documentation/admin-guide/kernel-parameters.txt | 4 ++++ drivers/acpi/acpi_watchdog.c | 12 +++++++++++- 2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 7e0a4be3503d6..ae51b1b7b67fb 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -137,6 +137,10 @@ dynamic table installation which will install SSDT tables to /sys/firmware/acpi/tables/dynamic.
+ acpi_no_watchdog [HW,ACPI,WDT] + Ignore the ACPI-based watchdog interface (WDAT) and let + a native driver control the watchdog device instead. + acpi_rsdp= [ACPI,EFI,KEXEC] Pass the RSDP address to the kernel, mostly used on machines running EFI runtime service to boot the diff --git a/drivers/acpi/acpi_watchdog.c b/drivers/acpi/acpi_watchdog.c index 95600309ce420..685fd0ef9e8f2 100644 --- a/drivers/acpi/acpi_watchdog.c +++ b/drivers/acpi/acpi_watchdog.c @@ -58,12 +58,14 @@ static bool acpi_watchdog_uses_rtc(const struct acpi_table_wdat *wdat) } #endif
+static bool acpi_no_watchdog; + static const struct acpi_table_wdat *acpi_watchdog_get_wdat(void) { const struct acpi_table_wdat *wdat = NULL; acpi_status status;
- if (acpi_disabled) + if (acpi_disabled || acpi_no_watchdog) return NULL;
status = acpi_get_table(ACPI_SIG_WDAT, 0, @@ -91,6 +93,14 @@ bool acpi_has_watchdog(void) } EXPORT_SYMBOL_GPL(acpi_has_watchdog);
+/* ACPI watchdog can be disabled on boot command line */ +static int __init disable_acpi_watchdog(char *str) +{ + acpi_no_watchdog = true; + return 1; +} +__setup("acpi_no_watchdog", disable_acpi_watchdog); + void __init acpi_watchdog_init(void) { const struct acpi_wdat_entry *entries;
From: Mansour Behabadi mansour@oxplot.com
[ Upstream commit e433be929e63265b7412478eb7ff271467aee2d7 ]
Magic Keyboards with more recent firmware (0x0100) report Fn key differently. Without this patch, Fn key may not behave as expected and may not be configurable via hid_apple fnmode module parameter.
Signed-off-by: Mansour Behabadi mansour@oxplot.com Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/hid-apple.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c index d0a81a03ddbdd..8ab8f2350bbcd 100644 --- a/drivers/hid/hid-apple.c +++ b/drivers/hid/hid-apple.c @@ -343,7 +343,8 @@ static int apple_input_mapping(struct hid_device *hdev, struct hid_input *hi, unsigned long **bit, int *max) { if (usage->hid == (HID_UP_CUSTOM | 0x0003) || - usage->hid == (HID_UP_MSVENDOR | 0x0003)) { + usage->hid == (HID_UP_MSVENDOR | 0x0003) || + usage->hid == (HID_UP_HPVENDOR2 | 0x0003)) { /* The fn key on Apple USB keyboards */ set_bit(EV_REP, hi->input->evbit); hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_FN);
From: Johan Korsnes jkorsnes@cisco.com
[ Upstream commit 5ebdffd25098898aff1249ae2f7dbfddd76d8f8f ]
In case a report is greater than HID_MAX_BUFFER_SIZE, it is truncated, but the report-number byte is not correctly handled. This results in a off-by-one in the following memset, causing a kernel Oops and ensuing system crash.
Note: With commit 8ec321e96e05 ("HID: Fix slab-out-of-bounds read in hid_field_extract") I no longer hit the kernel Oops as we instead fail "controlled" at probe if there is a report too long in the HID report-descriptor. hid_report_raw_event() is an exported symbol, so presumabely we cannot always rely on this being the case.
Fixes: 966922f26c7f ("HID: fix a crash in hid_report_raw_event() function.") Signed-off-by: Johan Korsnes jkorsnes@cisco.com Cc: Armando Visconti armando.visconti@st.com Cc: Jiri Kosina jkosina@suse.cz Cc: Alan Stern stern@rowland.harvard.edu Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/hid-core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 2d089d3954e38..75b0a337114df 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1567,7 +1567,9 @@ int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size,
rsize = ((report->size - 1) >> 3) + 1;
- if (rsize > HID_MAX_BUFFER_SIZE) + if (report_enum->numbered && rsize >= HID_MAX_BUFFER_SIZE) + rsize = HID_MAX_BUFFER_SIZE - 1; + else if (rsize > HID_MAX_BUFFER_SIZE) rsize = HID_MAX_BUFFER_SIZE;
if (csize < rsize) {
From: Johan Korsnes jkorsnes@cisco.com
[ Upstream commit 84a4062632462c4320704fcdf8e99e89e94c0aba ]
We have a HID touch device that reports its opens and shorts test results in HID buffers of size 8184 bytes. The maximum size of the HID buffer is currently set to 4096 bytes, causing probe of this device to fail. With this patch we increase the maximum size of the HID buffer to 8192 bytes, making device probe and acquisition of said buffers succeed.
Signed-off-by: Johan Korsnes jkorsnes@cisco.com Cc: Alan Stern stern@rowland.harvard.edu Cc: Armando Visconti armando.visconti@st.com Cc: Jiri Kosina jkosina@suse.cz Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/hid.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/hid.h b/include/linux/hid.h index 3656a04d764ba..ba1f675598314 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -477,7 +477,7 @@ struct hid_report_enum { };
#define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */ -#define HID_MAX_BUFFER_SIZE 4096 /* 4kb */ +#define HID_MAX_BUFFER_SIZE 8192 /* 8kb */ #define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */ #define HID_OUTPUT_FIFO_SIZE 64
From: "dan.carpenter@oracle.com" dan.carpenter@oracle.com
[ Upstream commit 5c02c447eaeda29d3da121a2e17b97ccaf579b51 ]
Syzbot reports that "hiddev" is used after it's free in hiddev_disconnect(). The hiddev_disconnect() function sets "hiddev->exist = 0;" so hiddev_release() can free it as soon as we drop the "existancelock" lock. This patch moves the mutex_unlock(&hiddev->existancelock) until after we have finished using it.
Reported-by: syzbot+784ccb935f9900cc7c9e@syzkaller.appspotmail.com Fixes: 7f77897ef2b6 ("HID: hiddev: fix potential use-after-free") Suggested-by: Alan Stern stern@rowland.harvard.edu Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/usbhid/hiddev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c index bccd97cdc53f9..d9602f3a359e1 100644 --- a/drivers/hid/usbhid/hiddev.c +++ b/drivers/hid/usbhid/hiddev.c @@ -954,9 +954,9 @@ void hiddev_disconnect(struct hid_device *hid) hiddev->exist = 0;
if (hiddev->open) { - mutex_unlock(&hiddev->existancelock); hid_hw_close(hiddev->hid); wake_up_interruptible(&hiddev->wait); + mutex_unlock(&hiddev->existancelock); } else { mutex_unlock(&hiddev->existancelock); kfree(hiddev);
From: "Gustavo A. R. Silva" gustavo@embeddedor.com
[ Upstream commit 54498e8070e19e74498a72c7331348143e7e1f8c ]
Factor out 100 from the equation and do 32-bit arithmetic (3 * clk_mhz / 10) instead of 64-bit.
Notice that clk_mhz is MHz, so the multiplication will never wrap 32 bits and there is no need for div_u64().
Addresses-Coverity: 1458369 ("Unintentional integer overflow") Fixes: 0560ad576268 ("i2c: altera: Add Altera I2C Controller driver") Suggested-by: David Laight David.Laight@ACULAB.COM Signed-off-by: Gustavo A. R. Silva gustavo@embeddedor.com Reviewed-by: Thor Thayer thor.thayer@linux.intel.com Signed-off-by: Wolfram Sang wsa@the-dreams.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/i2c/busses/i2c-altera.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-altera.c b/drivers/i2c/busses/i2c-altera.c index f5e1941e65b5a..a1cdcfc74acf6 100644 --- a/drivers/i2c/busses/i2c-altera.c +++ b/drivers/i2c/busses/i2c-altera.c @@ -182,7 +182,7 @@ static void altr_i2c_init(struct altr_i2c_dev *idev) /* SCL Low Time */ writel(t_low, idev->base + ALTR_I2C_SCL_LOW); /* SDA Hold Time, 300ns */ - writel(div_u64(300 * clk_mhz, 1000), idev->base + ALTR_I2C_SDA_HOLD); + writel(3 * clk_mhz / 10, idev->base + ALTR_I2C_SDA_HOLD);
/* Mask all master interrupt bits */ altr_i2c_int_enable(idev, ALTR_I2C_ALL_IRQ, false);
From: Kai-Heng Feng kai.heng.feng@canonical.com
[ Upstream commit be0aba826c4a6ba5929def1962a90d6127871969 ]
The Surfbook E11B uses the SIPODEV SP1064 touchpad, which does not supply descriptors, so it has to be added to the override list.
BugLink: https://bugs.launchpad.net/bugs/1858299 Signed-off-by: Kai-Heng Feng kai.heng.feng@canonical.com Reviewed-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Benjamin Tissoires benjamin.tissoires@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c b/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c index 10af8585c820d..95052373a8282 100644 --- a/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c +++ b/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c @@ -341,6 +341,14 @@ static const struct dmi_system_id i2c_hid_dmi_desc_override_table[] = { }, .driver_data = (void *)&sipodev_desc }, + { + .ident = "Trekstor SURFBOOK E11B", + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TREKSTOR"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "SURFBOOK E11B"), + }, + .driver_data = (void *)&sipodev_desc + }, { .ident = "Direkt-Tek DTLAPY116-2", .matches = {
From: Christophe JAILLET christophe.jaillet@wanadoo.fr
[ Upstream commit bef8e2dfceed6daeb6ca3e8d33f9c9d43b926580 ]
Pointer on the memory allocated by 'alloc_progmem()' is stored in 'v->load_addr'. So this is this memory that should be freed by 'release_progmem()'.
'release_progmem()' is only a call to 'kfree()'.
With the current code, there is both a double free and a memory leak. Fix it by passing the correct pointer to 'release_progmem()'.
Fixes: e01402b115ccc ("More AP / SP bits for the 34K, the Malta bits and things. Still wants") Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr Signed-off-by: Paul Burton paulburton@kernel.org Cc: ralf@linux-mips.org Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: kernel-janitors@vger.kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/mips/kernel/vpe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c index 544ea21bfef9c..b2683aca401f6 100644 --- a/arch/mips/kernel/vpe.c +++ b/arch/mips/kernel/vpe.c @@ -134,7 +134,7 @@ void release_vpe(struct vpe *v) { list_del(&v->list); if (v->load_addr) - release_progmem(v); + release_progmem(v->load_addr); kfree(v); }
From: Johannes Berg johannes.berg@intel.com
[ Upstream commit a7ee7d44b57c9ae174088e53a668852b7f4f452d ]
We may end up with a NULL reg_rule after the loop in handle_channel_custom() if the bandwidth didn't fit, check if this is the case and bail out if so.
Signed-off-by: Johannes Berg johannes.berg@intel.com Link: https://lore.kernel.org/r/20200221104449.3b558a50201c.I4ad3725c4dacaefd2d18d... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/wireless/reg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/wireless/reg.c b/net/wireless/reg.c index a520f433d4765..b95d1c2bdef7e 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -1733,7 +1733,7 @@ static void handle_channel_custom(struct wiphy *wiphy, break; }
- if (IS_ERR(reg_rule)) { + if (IS_ERR_OR_NULL(reg_rule)) { pr_debug("Disabling freq %d MHz as custom regd has no rule that fits it\n", chan->center_freq); if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) {
From: Igor Druzhinin igor.druzhinin@citrix.com
[ Upstream commit ff6993bb79b9f99bdac0b5378169052931b65432 ]
fc_disc_gpn_id_resp() should be the last function using it so free it here to avoid memory leak.
Link: https://lore.kernel.org/r/1579013000-14570-2-git-send-email-igor.druzhinin@c... Reviewed-by: Hannes Reinecke hare@suse.de Signed-off-by: Igor Druzhinin igor.druzhinin@citrix.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/libfc/fc_disc.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c index bb9c1c0166439..28b50ab2fbb01 100644 --- a/drivers/scsi/libfc/fc_disc.c +++ b/drivers/scsi/libfc/fc_disc.c @@ -652,6 +652,8 @@ static void fc_disc_gpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, } out: kref_put(&rdata->kref, fc_rport_destroy); + if (!IS_ERR(fp)) + fc_frame_free(fp); }
/**
From: Daniele Palmas dnlplm@gmail.com
[ Upstream commit eae7172f8141eb98e64e6e81acc9e9d5b2add127 ]
usbnet creates network interfaces with min_mtu = 0 and max_mtu = ETH_MAX_MTU.
These values are not modified by qmi_wwan when the network interface is created initially, allowing, for example, to set mtu greater than 1500.
When a raw_ip switch is done (raw_ip set to 'Y', then set to 'N') the mtu values for the network interface are set through ether_setup, with min_mtu = ETH_MIN_MTU and max_mtu = ETH_DATA_LEN, not allowing anymore to set mtu greater than 1500 (error: mtu greater than device maximum).
The patch restores the original min/max mtu values set by usbnet after a raw_ip switch.
Signed-off-by: Daniele Palmas dnlplm@gmail.com Acked-by: Bjørn Mork bjorn@mork.no Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/usb/qmi_wwan.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index db70d4c5778a6..1f76998db44e4 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -275,6 +275,9 @@ static void qmi_wwan_netdev_setup(struct net_device *net) netdev_dbg(net, "mode: raw IP\n"); } else if (!net->header_ops) { /* don't bother if already set */ ether_setup(net); + /* Restoring min/max mtu values set originally by usbnet */ + net->min_mtu = 0; + net->max_mtu = ETH_MAX_MTU; clear_bit(EVENT_NO_IP_ALIGN, &dev->flags); netdev_dbg(net, "mode: Ethernet\n"); }
From: Marek Vasut marex@denx.de
[ Upstream commit 44343418d0f2f623cb9da6f5000df793131cbe3b ]
The KS8851 requires that packet RX and TX are mutually exclusive. Currently, the driver hopes to achieve this by disabling interrupt from the card by writing the card registers and by disabling the interrupt on the interrupt controller. This however is racy on SMP.
Replace this approach by expanding the spinlock used around the ks_start_xmit() TX path to ks_irq() RX path to assure true mutual exclusion and remove the interrupt enabling/disabling, which is now not needed anymore. Furthermore, disable interrupts also in ks_net_stop(), which was missing before.
Note that a massive improvement here would be to re-use the KS8851 driver approach, which is to move the TX path into a worker thread, interrupt handling to threaded interrupt, and synchronize everything with mutexes, but that would be a much bigger rework, for a separate patch.
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 | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/micrel/ks8851_mll.c b/drivers/net/ethernet/micrel/ks8851_mll.c index adbe0a6fe0db9..3dc961d2689f0 100644 --- a/drivers/net/ethernet/micrel/ks8851_mll.c +++ b/drivers/net/ethernet/micrel/ks8851_mll.c @@ -866,14 +866,17 @@ static irqreturn_t ks_irq(int irq, void *pw) { struct net_device *netdev = pw; struct ks_net *ks = netdev_priv(netdev); + unsigned long flags; u16 status;
+ spin_lock_irqsave(&ks->statelock, flags); /*this should be the first in IRQ handler */ ks_save_cmd_reg(ks);
status = ks_rdreg16(ks, KS_ISR); if (unlikely(!status)) { ks_restore_cmd_reg(ks); + spin_unlock_irqrestore(&ks->statelock, flags); return IRQ_NONE; }
@@ -899,6 +902,7 @@ static irqreturn_t ks_irq(int irq, void *pw) ks->netdev->stats.rx_over_errors++; /* this should be the last in IRQ handler*/ ks_restore_cmd_reg(ks); + spin_unlock_irqrestore(&ks->statelock, flags); return IRQ_HANDLED; }
@@ -968,6 +972,7 @@ static int ks_net_stop(struct net_device *netdev)
/* shutdown RX/TX QMU */ ks_disable_qmu(ks); + ks_disable_int(ks);
/* set powermode to soft power down to save power */ ks_set_powermode(ks, PMECR_PM_SOFTDOWN); @@ -1024,10 +1029,9 @@ static netdev_tx_t ks_start_xmit(struct sk_buff *skb, struct net_device *netdev) { netdev_tx_t retv = NETDEV_TX_OK; struct ks_net *ks = netdev_priv(netdev); + unsigned long flags;
- disable_irq(netdev->irq); - ks_disable_int(ks); - spin_lock(&ks->statelock); + spin_lock_irqsave(&ks->statelock, flags);
/* Extra space are required: * 4 byte for alignment, 4 for status/length, 4 for CRC @@ -1041,9 +1045,7 @@ static netdev_tx_t ks_start_xmit(struct sk_buff *skb, struct net_device *netdev) dev_kfree_skb(skb); } else retv = NETDEV_TX_BUSY; - spin_unlock(&ks->statelock); - ks_enable_int(ks); - enable_irq(netdev->irq); + spin_unlock_irqrestore(&ks->statelock, flags); return retv; }
From: Madhuparna Bhowmik madhuparnabhowmik10@gmail.com
[ Upstream commit 253216ffb2a002a682c6f68bd3adff5b98b71de8 ]
local->sta_mtx is held in __ieee80211_check_fast_rx_iface(). No need to use list_for_each_entry_rcu() as it also requires a cond argument to avoid false lockdep warnings when not used in RCU read-side section (with CONFIG_PROVE_RCU_LIST). Therefore use list_for_each_entry();
Signed-off-by: Madhuparna Bhowmik madhuparnabhowmik10@gmail.com Link: https://lore.kernel.org/r/20200223143302.15390-1-madhuparnabhowmik10@gmail.c... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/mac80211/rx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 31000622376df..7c92b1471c34c 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -3862,7 +3862,7 @@ void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata)
lockdep_assert_held(&local->sta_mtx);
- list_for_each_entry_rcu(sta, &local->sta_list, list) { + list_for_each_entry(sta, &local->sta_list, list) { if (sdata != sta->sdata && (!sta->sdata->bss || sta->sdata->bss != sdata->bss)) continue;
linux-stable-mirror@lists.linaro.org
-
Sasha Levin