December 2023 - Linux-stable-mirror

[PATCH 0/4] thermal: intel: hfi: Fix memory corruption on resume from hibernation

by Ricardo Neri

Hi, Memory corruption may occur if the location of the HFI memory buffer is not restored when resuming from hibernation or suspend-to-memory. During a normal boot, the kernel allocates a memory buffer and gives it to the hardware for reporting updates in the HFI table. The same allocation process is done by a restore kernel when resuming from suspend or hibernation. The location of the memory that the restore kernel allocates may differ from that allocated by the image kernel. To prevent memory corruption (the hardware keeps using the memory buffer from the restore kernel), it is necessary to disable HFI before transferring control to the image kernel. Once running, the image kernel must restore the location of the HFI memory and enable HFI. The patchset addresses the described bug on systems with one or more HFI instances (i.e., packages) using CPU hotplug callbacks and a suspend notifier. I tested this patchset on Meteor Lake and Sapphire Rapids. The systems completed 3500 (in two separate tests of 1500 and 2000 repeats) and 1000 hibernate-resume cycles, respectively. I tested it using Rafael's testing branch as on 20th December 2023. Thanks and BR, Ricardo Ricardo Neri (4): thermal: intel: hfi: Refactor enabling code into helper functions thermal: intel: hfi: Enable an HFI instance from its first online CPU thermal: intel: hfi: Disable an HFI instance when all its CPUs go offline thermal: intel: hfi: Add a suspend notifier drivers/thermal/intel/intel_hfi.c | 142 ++++++++++++++++++++++++------ 1 file changed, 116 insertions(+), 26 deletions(-) -- 2.25.1

1 year, 2 months

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[PATCH 6.6.y 00/19] ksmbd backport patches for linux-6.6.y

by Namjae Jeon

This patchset backport ksmbd patches between 6.6 and 6.7-rc5 kernel. Bug fixes were not applied well due to clean-up and new feautre patches. To facilitate backport, This patch-set included clean-up patches and new feature patches of ksmbd for stable 6.6 kernel. -- 2.25.1

1 year, 2 months

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[PATCH 6.1 000/112] 6.1.70-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.1.70 release. There are 112 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Mon, 01 Jan 2024 11:57:43 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.70-rc1… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.1.70-rc1 Léo Lam <leo(a)leolam.fr> wifi: nl80211: fix deadlock in nl80211_set_cqm_rssi (6.6.x) Johannes Berg <johannes.berg(a)intel.com> wifi: cfg80211: fix CQM for non-range use Krister Johansen <kjlx(a)templeofstupid.com> fuse: share lookup state between submount and its parent SeongJae Park <sj(a)kernel.org> mm/damon/core: make damon_start() waits until kdamond_fn() starts Thomas Gleixner <tglx(a)linutronix.de> x86/alternatives: Sync core before enabling interrupts Marc Zyngier <maz(a)kernel.org> KVM: arm64: vgic: Force vcpu vgic teardown on vcpu destroy Marc Zyngier <maz(a)kernel.org> KVM: arm64: vgic: Add a non-locking primitive for kvm_vgic_vcpu_destroy() Marc Zyngier <maz(a)kernel.org> KVM: arm64: vgic: Simplify kvm_vgic_destroy() Yaxiong Tian <tianyaxiong(a)kylinos.cn> thunderbolt: Fix memory leak in margining_port_remove() Herve Codina <herve.codina(a)bootlin.com> lib/vsprintf: Fix %pfwf when current node refcount == 0 xiongxin <xiongxin(a)kylinos.cn> gpio: dwapb: mask/unmask IRQ when disable/enale it Tony Lindgren <tony(a)atomide.com> bus: ti-sysc: Flush posted write only after srst_udelay Nam Cao <namcao(a)linutronix.de> pinctrl: starfive: jh7100: ignore disabled device tree nodes Mikulas Patocka <mpatocka(a)redhat.com> dm-integrity: don't modify bio's immutable bio_vec in integrity_metadata() Steven Rostedt (Google) <rostedt(a)goodmis.org> tracing / synthetic: Disable events after testing in synth_event_gen_test_init() Alexander Atanasov <alexander.atanasov(a)virtuozzo.com> scsi: core: Always send batch on reset or error handling command Martin K. Petersen <martin.petersen(a)oracle.com> Revert "scsi: aacraid: Reply queue mapping to CPUs based on IRQ affinity" Geliang Tang <geliang.tang(a)linux.dev> selftests: mptcp: join: fix subflow_send_ack lookup Ming Lei <ming.lei(a)redhat.com> ublk: move ublk_cancel_dev() out of ub->mutex Konstantin Meskhidze <konstantin.meskhidze(a)huawei.com> ubifs: fix possible dereference after free Naohiro Aota <naohiro.aota(a)wdc.com> btrfs: zoned: no longer count fresh BG region as zone unusable Aric Cyr <aric.cyr(a)amd.com> Revert "drm/amd/display: Do not set DRR on pipe commit" Li Lingfeng <lilingfeng3(a)huawei.com> dm thin metadata: Fix ABBA deadlock by resetting dm_bufio_client Mauricio Faria de Oliveira <mfo(a)canonical.com> loop: do not enforce max_loop hard limit by (new) default Heiko Stuebner <heiko.stuebner(a)vrull.eu> RISC-V: Fix do_notify_resume / do_work_pending prototype JP Kobryn <inwardvessel(a)gmail.com> 9p: prevent read overrun in protocol dump tracepoint Ville Syrjälä <ville.syrjala(a)linux.intel.com> drm/i915: Reject async flips with bigjoiner Paulo Alcantara <pc(a)manguebit.com> smb: client: fix OOB in smbCalcSize() Paulo Alcantara <pc(a)manguebit.com> smb: client: fix OOB in SMB2_query_info_init() Paulo Alcantara <pc(a)manguebit.com> smb: client: fix potential OOB in cifs_dump_detail() Paulo Alcantara <pc(a)manguebit.com> smb: client: fix OOB in cifsd when receiving compounded resps Fabio Estevam <festevam(a)denx.de> dt-bindings: nvmem: mxs-ocotp: Document fsl,ocotp Ronald Wahl <ronald.wahl(a)raritan.com> net: ks8851: Fix TX stall caused by TX buffer overrun Rouven Czerwinski <r.czerwinski(a)pengutronix.de> net: rfkill: gpio: set GPIO direction Fedor Pchelkin <pchelkin(a)ispras.ru> net: 9p: avoid freeing uninit memory in p9pdu_vreadf Christoffer Sandberg <cs(a)tuxedo.de> Input: soc_button_array - add mapping for airplane mode button Jose Ignacio Tornos Martinez <jtornosm(a)redhat.com> net: usb: ax88179_178a: avoid failed operations when device is disconnected Alex Lu <alex_lu(a)realsil.com.cn> Bluetooth: Add more enc key size check Xiao Yao <xiaoyao(a)rock-chips.com> Bluetooth: MGMT/SMP: Fix address type when using SMP over BREDR/LE Frédéric Danis <frederic.danis(a)collabora.com> Bluetooth: L2CAP: Send reject on command corrupted request Hyunwoo Kim <v4bel(a)theori.io> Bluetooth: af_bluetooth: Fix Use-After-Free in bt_sock_recvmsg Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_event: Fix not checking if HCI_OP_INQUIRY has been sent Clément Villeret <clement.villeret(a)gmail.com> ALSA: hda/realtek: Add quirk for ASUS ROG GV302XA Reinhard Speyerer <rspmn(a)arcor.de> USB: serial: option: add Quectel RM500Q R13 firmware support Slark Xiao <slark_xiao(a)163.com> USB: serial: option: add Foxconn T99W265 with new baseline Alper Ak <alperyasinak1(a)gmail.com> USB: serial: option: add Quectel EG912Y module support Mark Glover <mark.glover(a)actisense.com> USB: serial: ftdi_sio: update Actisense PIDs constant names Johannes Berg <johannes.berg(a)intel.com> wifi: cfg80211: fix certs build to not depend on file order Chen-Yu Tsai <wens(a)kernel.org> wifi: cfg80211: Add my certificate Tasos Sahanidis <tasos(a)tasossah.com> usb-storage: Add quirk for incorrect WP on Kingston DT Ultimate 3.0 G3 Jeremie Knuesel <knuesel(a)gmail.com> ALSA: usb-audio: Increase delay in MOTU M quirk David Lechner <dlechner(a)baylibre.com> iio: triggered-buffer: prevent possible freeing of wrong buffer Wadim Egorov <w.egorov(a)phytec.de> iio: adc: ti_am335x_adc: Fix return value check of tiadc_request_dma() Javier Carrasco <javier.carrasco.cruz(a)gmail.com> iio: common: ms_sensors: ms_sensors_i2c: fix humidity conversion time table Wei Yongjun <weiyongjun1(a)huawei.com> scsi: bnx2fc: Fix skb double free in bnx2fc_rcv() Haoran Liu <liuhaoran14(a)163.com> Input: ipaq-micro-keys - add error handling for devm_kmemdup Konrad Dybcio <konrad.dybcio(a)linaro.org> interconnect: qcom: sm8250: Enable sync_state Su Hui <suhui(a)nfschina.com> iio: imu: inv_mpu6050: fix an error code problem in inv_mpu6050_read_raw Mike Tipton <quic_mdtipton(a)quicinc.com> interconnect: Treat xlate() returning NULL node as an error Ville Syrjälä <ville.syrjala(a)linux.intel.com> drm/i915: Fix ADL+ tiled plane stride when the POT stride is smaller than the original Clint Taylor <clinton.a.taylor(a)intel.com> drm/i915/mtl: Add MTL for remapping CCS FBs Ville Syrjälä <ville.syrjala(a)linux.intel.com> drm/i915/dpt: Only do the POT stride remap when using DPT Ville Syrjälä <ville.syrjala(a)linux.intel.com> drm/i915: Fix intel_atomic_setup_scalers() plane_state handling Ville Syrjälä <ville.syrjala(a)linux.intel.com> drm/i915: Relocate intel_atomic_setup_scalers() Luca Coelho <luciano.coelho(a)intel.com> drm/i915/mtl: limit second scaler vertical scaling in ver >= 14 Maurizio Lombardi <mlombard(a)redhat.com> nvme-pci: fix sleeping function called from interrupt context Kent Gibson <warthog618(a)gmail.com> gpiolib: cdev: add gpio_device locking wrapper around gpio_ioctl() Alexis Lothoré <alexis.lothore(a)bootlin.com> pinctrl: at91-pio4: use dedicated lock class for IRQ Arnd Bergmann <arnd(a)arndb.de> x86/xen: add CPU dependencies for 32-bit build Quan Nguyen <quan(a)os.amperecomputing.com> i2c: aspeed: Handle the coalesced stop conditions with the start conditions. Shengjiu Wang <shengjiu.wang(a)nxp.com> ASoC: fsl_sai: Fix channel swap issue on i.MX8MP Jerome Brunet <jbrunet(a)baylibre.com> ASoC: hdmi-codec: fix missing report for jack initial status David Howells <dhowells(a)redhat.com> afs: Fix use-after-free due to get/remove race in volume tree David Howells <dhowells(a)redhat.com> afs: Fix overwriting of result of DNS query David Howells <dhowells(a)redhat.com> keys, dns: Allow key types (eg. DNS) to be reclaimed immediately on expiry Eric Dumazet <edumazet(a)google.com> net: check dev->gso_max_size in gso_features_check() David Howells <dhowells(a)redhat.com> afs: Fix dynamic root lookup DNS check David Howells <dhowells(a)redhat.com> afs: Fix the dynamic root's d_delete to always delete unused dentries Liu Jian <liujian56(a)huawei.com> net: check vlan filter feature in vlan_vids_add_by_dev() and vlan_vids_del_by_dev() Yury Norov <yury.norov(a)gmail.com> net: mana: select PAGE_POOL Arnd Bergmann <arnd(a)arndb.de> Bluetooth: hci_event: shut up a false-positive warning Ying Hsu <yinghsu(a)chromium.org> Bluetooth: Fix deadlock in vhci_send_frame Eric Dumazet <edumazet(a)google.com> net/rose: fix races in rose_kill_by_device() Zhipeng Lu <alexious(a)zju.edu.cn> ethernet: atheros: fix a memleak in atl1e_setup_ring_resources Eric Dumazet <edumazet(a)google.com> net: sched: ife: fix potential use-after-free Shigeru Yoshida <syoshida(a)redhat.com> net: Return error from sk_stream_wait_connect() if sk_wait_event() fails Suman Ghosh <sumang(a)marvell.com> octeontx2-pf: Fix graceful exit during PFC configuration failure Vladimir Oltean <vladimir.oltean(a)nxp.com> net: mscc: ocelot: fix eMAC TX RMON stats for bucket 256-511 and above Rahul Rameshbabu <rrameshbabu(a)nvidia.com> net/mlx5e: Correct snprintf truncation handling for fw_version buffer used by representors Rahul Rameshbabu <rrameshbabu(a)nvidia.com> net/mlx5e: Correct snprintf truncation handling for fw_version buffer Moshe Shemesh <moshe(a)nvidia.com> net/mlx5: Fix fw tracer first block check Dinghao Liu <dinghao.liu(a)zju.edu.cn> net/mlx5e: fix a potential double-free in fs_udp_create_groups Shifeng Li <lishifeng(a)sangfor.com.cn> net/mlx5e: Fix a race in command alloc flow Shay Drory <shayd(a)nvidia.com> net/mlx5: Re-organize mlx5_cmd struct Tariq Toukan <tariqt(a)nvidia.com> net/mlx5: Prevent high-rate FW commands from populating all slots Tariq Toukan <tariqt(a)nvidia.com> net/mlx5: Introduce and use opcode getter in command interface Shifeng Li <lishifeng(a)sangfor.com.cn> net/mlx5e: Fix slab-out-of-bounds in mlx5_query_nic_vport_mac_list() Vlad Buslov <vladbu(a)nvidia.com> Revert "net/mlx5e: fix double free of encap_header" Vlad Buslov <vladbu(a)nvidia.com> Revert "net/mlx5e: fix double free of encap_header in update funcs" Johannes Berg <johannes.berg(a)intel.com> wifi: mac80211: mesh_plink: fix matches_local logic Johannes Berg <johannes.berg(a)intel.com> wifi: mac80211: mesh: check element parsing succeeded Edward Adam Davis <eadavis(a)qq.com> wifi: mac80211: check if the existing link config remains unchanged Johannes Berg <johannes.berg(a)intel.com> wifi: iwlwifi: pcie: add another missing bh-disable for rxq->lock Heiko Carstens <hca(a)linux.ibm.com> s390/vx: fix save/restore of fpu kernel context Geert Uytterhoeven <geert+renesas(a)glider.be> reset: Fix crash when freeing non-existent optional resets Kunwu Chan <chentao(a)kylinos.cn> ARM: OMAP2+: Fix null pointer dereference and memory leak in omap_soc_device_init Andrew Davis <afd(a)ti.com> ARM: dts: dra7: Fix DRA7 L3 NoC node register size Hamza Mahfooz <hamza.mahfooz(a)amd.com> drm/amd/display: fix hw rotated modes when PSR-SU is enabled Mario Limonciello <mario.limonciello(a)amd.com> HID: i2c-hid: Add IDEA5002 to i2c_hid_acpi_blacklist[] Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> HID: i2c-hid: acpi: Unify ACPI ID tables format Jiri Olsa <jolsa(a)kernel.org> bpf: Fix prog_array_map_poke_run map poke update Arnd Bergmann <arnd(a)arndb.de> kasan: disable kasan_non_canonical_hook() for HW tags ------------- Diffstat: .../devicetree/bindings/nvmem/mxs-ocotp.yaml | 10 +- Makefile | 4 +- arch/arm/boot/dts/dra7.dtsi | 2 +- arch/arm/mach-omap2/id.c | 5 + arch/arm64/kvm/arm.c | 2 +- arch/arm64/kvm/vgic/vgic-init.c | 47 ++-- arch/arm64/kvm/vgic/vgic-mmio-v3.c | 2 +- arch/arm64/kvm/vgic/vgic.h | 1 + arch/riscv/include/asm/signal.h | 2 +- arch/s390/include/asm/fpu/api.h | 2 +- arch/x86/kernel/alternative.c | 2 +- arch/x86/net/bpf_jit_comp.c | 46 ++++ arch/x86/xen/Kconfig | 1 + drivers/block/loop.c | 36 ++- drivers/block/ublk_drv.c | 40 ++-- drivers/bluetooth/hci_vhci.c | 10 +- drivers/bus/ti-sysc.c | 18 +- drivers/gpio/gpio-dwapb.c | 12 +- drivers/gpio/gpiolib-cdev.c | 16 +- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 + drivers/gpu/drm/amd/display/dc/dc_hw_types.h | 1 + .../drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 3 +- drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c | 12 +- drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c | 3 + drivers/gpu/drm/i915/display/intel_atomic.c | 193 +--------------- drivers/gpu/drm/i915/display/intel_atomic.h | 4 - drivers/gpu/drm/i915/display/intel_display.c | 11 + drivers/gpu/drm/i915/display/intel_fb.c | 10 +- drivers/gpu/drm/i915/display/skl_scaler.c | 257 +++++++++++++++++++++ drivers/gpu/drm/i915/display/skl_scaler.h | 10 +- drivers/hid/i2c-hid/i2c-hid-acpi.c | 15 +- drivers/i2c/busses/i2c-aspeed.c | 48 ++-- drivers/iio/adc/ti_am335x_adc.c | 4 +- drivers/iio/buffer/industrialio-triggered-buffer.c | 10 + drivers/iio/common/ms_sensors/ms_sensors_i2c.c | 4 +- drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 4 +- drivers/input/keyboard/ipaq-micro-keys.c | 3 + drivers/input/misc/soc_button_array.c | 5 + drivers/interconnect/core.c | 3 + drivers/interconnect/qcom/sm8250.c | 1 + drivers/md/dm-bufio.c | 7 + drivers/md/dm-integrity.c | 11 +- drivers/md/dm-thin-metadata.c | 58 ++--- drivers/md/persistent-data/dm-block-manager.c | 6 + drivers/md/persistent-data/dm-block-manager.h | 1 + drivers/md/persistent-data/dm-space-map.h | 3 +- .../md/persistent-data/dm-transaction-manager.c | 3 + drivers/net/ethernet/atheros/atl1e/atl1e_main.c | 5 +- .../ethernet/marvell/octeontx2/nic/otx2_dcbnl.c | 17 +- drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 216 +++++++++-------- drivers/net/ethernet/mellanox/mlx5/core/debugfs.c | 4 +- .../ethernet/mellanox/mlx5/core/diag/fw_tracer.c | 2 +- .../mellanox/mlx5/core/en/fs_tt_redirect.c | 1 + .../net/ethernet/mellanox/mlx5/core/en/tc_tun.c | 30 +-- .../net/ethernet/mellanox/mlx5/core/en_ethtool.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/vport.c | 2 +- drivers/net/ethernet/micrel/ks8851.h | 3 + drivers/net/ethernet/micrel/ks8851_common.c | 20 +- drivers/net/ethernet/micrel/ks8851_spi.c | 42 ++-- drivers/net/ethernet/microsoft/Kconfig | 1 + drivers/net/ethernet/mscc/ocelot_stats.c | 8 +- drivers/net/usb/ax88179_178a.c | 23 +- drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 4 +- drivers/nvme/host/core.c | 3 +- drivers/pinctrl/pinctrl-at91-pio4.c | 8 + drivers/pinctrl/starfive/pinctrl-starfive-jh7100.c | 4 +- drivers/reset/core.c | 8 +- drivers/scsi/aacraid/aacraid.h | 1 - drivers/scsi/aacraid/commsup.c | 6 +- drivers/scsi/aacraid/linit.c | 14 -- drivers/scsi/aacraid/src.c | 25 +- drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 9 +- drivers/scsi/scsi_error.c | 2 + drivers/thunderbolt/debugfs.c | 2 +- drivers/usb/serial/ftdi_sio.c | 6 +- drivers/usb/serial/ftdi_sio_ids.h | 6 +- drivers/usb/serial/option.c | 5 + drivers/usb/storage/unusual_devs.h | 11 + fs/afs/cell.c | 6 +- fs/afs/dynroot.c | 31 +-- fs/afs/internal.h | 2 + fs/afs/volume.c | 26 ++- fs/btrfs/free-space-cache.c | 8 +- fs/btrfs/zoned.c | 26 +-- fs/fuse/fuse_i.h | 15 ++ fs/fuse/inode.c | 75 +++++- fs/smb/client/cifs_debug.c | 12 +- fs/smb/client/cifsglob.h | 3 +- fs/smb/client/connect.c | 7 +- fs/smb/client/misc.c | 4 + fs/smb/client/smb2ops.c | 19 +- fs/smb/client/smb2pdu.c | 29 ++- fs/ubifs/tnc.c | 1 + include/linux/bpf.h | 3 + include/linux/damon.h | 3 + include/linux/dm-bufio.h | 2 + include/linux/kasan.h | 6 +- include/linux/key-type.h | 1 + include/linux/mlx5/driver.h | 20 +- include/net/bluetooth/hci_core.h | 5 + include/trace/events/9p.h | 11 +- kernel/bpf/arraymap.c | 58 +---- kernel/trace/synth_event_gen_test.c | 11 + lib/vsprintf.c | 11 +- mm/damon/core.c | 7 + mm/kasan/report.c | 4 +- net/8021q/vlan_core.c | 9 +- net/9p/protocol.c | 17 +- net/bluetooth/af_bluetooth.c | 7 +- net/bluetooth/hci_event.c | 22 +- net/bluetooth/l2cap_core.c | 21 +- net/bluetooth/mgmt.c | 25 +- net/bluetooth/smp.c | 7 + net/core/dev.c | 3 + net/core/stream.c | 2 +- net/dns_resolver/dns_key.c | 10 +- net/ife/ife.c | 1 + net/mac80211/cfg.c | 4 +- net/mac80211/mesh_plink.c | 16 +- net/rfkill/rfkill-gpio.c | 8 + net/rose/af_rose.c | 39 +++- net/wireless/certs/wens.hex | 87 +++++++ net/wireless/core.h | 1 + net/wireless/nl80211.c | 56 +++-- security/keys/gc.c | 31 ++- security/keys/internal.h | 11 +- security/keys/key.c | 15 +- security/keys/proc.c | 2 +- sound/pci/hda/patch_realtek.c | 1 + sound/soc/codecs/hdmi-codec.c | 12 +- sound/soc/fsl/fsl_sai.c | 3 + sound/usb/quirks.c | 4 +- tools/testing/selftests/net/mptcp/mptcp_join.sh | 8 +- 134 files changed, 1494 insertions(+), 777 deletions(-)

1 year, 2 months

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Re: Patch "ring-buffer: Force absolute timestamp on discard of event" has been added to the 6.1-stable tree

by Steven Rostedt

Sasha, Was this automated or did you do this manually? I'm asking because I was walking through my INBOX to see what FAILED backports I could clean up, and I started on this one: https://lore.kernel.org/all/2023120938-unclamped-fleshy-688e@gregkh/ I did the cherry pick, fixed up the conflict, but when I tried to commit it, it failed because there was nothing to commit. This confused me for a bit, and then when I did a git blame, I saw that you had done the fix already. When you fix a FAILED patch, can you do a reply to the FAILED message that Greg sends out, so that I don't waste my time on trying to fix something that was already fixed? Thanks! -- Steve On Sun, 10 Dec 2023 14:40:35 -0500 Sasha Levin <sashal(a)kernel.org> wrote: > This is a note to let you know that I've just added the patch titled > > ring-buffer: Force absolute timestamp on discard of event > > to the 6.1-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > ring-buffer-force-absolute-timestamp-on-discard-of-e.patch > and it can be found in the queue-6.1 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let <stable(a)vger.kernel.org> know about it. > > > > commit 1249c67fa9a9b3ae207b53fcbefa8dac3acbc308 > Author: Steven Rostedt (Google) <rostedt(a)goodmis.org> > Date: Wed Dec 6 10:02:44 2023 -0500 > > ring-buffer: Force absolute timestamp on discard of event > > [ Upstream commit b2dd797543cfa6580eac8408dd67fa02164d9e56 ] > > There's a race where if an event is discarded from the ring buffer and an > interrupt were to happen at that time and insert an event, the time stamp > is still used from the discarded event as an offset. This can screw up the > timings. > > If the event is going to be discarded, set the "before_stamp" to zero. > When a new event comes in, it compares the "before_stamp" with the > "write_stamp" and if they are not equal, it will insert an absolute > timestamp. This will prevent the timings from getting out of sync due to > the discarded event. > > Link: https://lore.kernel.org/linux-trace-kernel/20231206100244.5130f9b3@gandalf.… > > Cc: stable(a)vger.kernel.org > Cc: Masami Hiramatsu <mhiramat(a)kernel.org> > Cc: Mark Rutland <mark.rutland(a)arm.com> > Cc: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> > Fixes: 6f6be606e763f ("ring-buffer: Force before_stamp and write_stamp to be different on discard") > Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> > Signed-off-by: Sasha Levin <sashal(a)kernel.org> > > diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c > index f3c4bb54a0485..c02a4cb879913 100644 > --- a/kernel/trace/ring_buffer.c > +++ b/kernel/trace/ring_buffer.c > @@ -3025,22 +3025,19 @@ rb_try_to_discard(struct ring_buffer_per_cpu *cpu_buffer, > local_read(&bpage->write) & ~RB_WRITE_MASK; > unsigned long event_length = rb_event_length(event); > > + /* > + * For the before_stamp to be different than the write_stamp > + * to make sure that the next event adds an absolute > + * value and does not rely on the saved write stamp, which > + * is now going to be bogus. > + */ > + rb_time_set(&cpu_buffer->before_stamp, 0); > + > /* Something came in, can't discard */ > if (!rb_time_cmpxchg(&cpu_buffer->write_stamp, > write_stamp, write_stamp - delta)) > return 0; > > - /* > - * It's possible that the event time delta is zero > - * (has the same time stamp as the previous event) > - * in which case write_stamp and before_stamp could > - * be the same. In such a case, force before_stamp > - * to be different than write_stamp. It doesn't > - * matter what it is, as long as its different. > - */ > - if (!delta) > - rb_time_set(&cpu_buffer->before_stamp, 0); > - > /* > * If an event were to come in now, it would see that the > * write_stamp and the before_stamp are different, and assume

1 year, 2 months

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patch "iio: adc: ad7091r: Enable internal vref if external vref is not" added to char-misc-next

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled iio: adc: ad7091r: Enable internal vref if external vref is not to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-next branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will also be merged in the next major kernel release during the merge window. If you have any questions about this process, please let me know. From e71c5c89bcb165a02df35325aa13d1ee40112401 Mon Sep 17 00:00:00 2001 From: Marcelo Schmitt <marcelo.schmitt(a)analog.com> Date: Tue, 19 Dec 2023 17:26:27 -0300 Subject: iio: adc: ad7091r: Enable internal vref if external vref is not supplied The ADC needs a voltage reference to work correctly. Users can provide an external voltage reference or use the chip internal reference to operate the ADC. The availability of an in chip reference for the ADC saves the user from having to supply an external voltage reference, which makes the external reference an optional property as described in the device tree documentation. Though, to use the internal reference, it must be enabled by writing to the configuration register. Enable AD7091R internal voltage reference if no external vref is supplied. Fixes: 260442cc5be4 ("iio: adc: ad7091r5: Add scale and external VREF support") Signed-off-by: Marcelo Schmitt <marcelo.schmitt(a)analog.com> Link: https://lore.kernel.org/r/b865033fa6a4fc4bf2b4a98ec51a6144e0f64f77.17030133… Cc: <Stable(a)vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron(a)huawei.com> --- drivers/iio/adc/ad7091r-base.c | 7 +++++++ drivers/iio/adc/ad7091r-base.h | 2 ++ 2 files changed, 9 insertions(+) diff --git a/drivers/iio/adc/ad7091r-base.c b/drivers/iio/adc/ad7091r-base.c index 6d93da154810..7ccc9b44dcd8 100644 --- a/drivers/iio/adc/ad7091r-base.c +++ b/drivers/iio/adc/ad7091r-base.c @@ -406,7 +406,14 @@ int ad7091r_probe(struct device *dev, const char *name, if (IS_ERR(st->vref)) { if (PTR_ERR(st->vref) == -EPROBE_DEFER) return -EPROBE_DEFER; + st->vref = NULL; + /* Enable internal vref */ + ret = regmap_set_bits(st->map, AD7091R_REG_CONF, + AD7091R_REG_CONF_INT_VREF); + if (ret) + return dev_err_probe(st->dev, ret, + "Error on enable internal reference\n"); } else { ret = regulator_enable(st->vref); if (ret) diff --git a/drivers/iio/adc/ad7091r-base.h b/drivers/iio/adc/ad7091r-base.h index 7a78976a2f80..b9e1c8bf3440 100644 --- a/drivers/iio/adc/ad7091r-base.h +++ b/drivers/iio/adc/ad7091r-base.h @@ -8,6 +8,8 @@ #ifndef __DRIVERS_IIO_ADC_AD7091R_BASE_H__ #define __DRIVERS_IIO_ADC_AD7091R_BASE_H__ +#define AD7091R_REG_CONF_INT_VREF BIT(0) + /* AD7091R_REG_CH_LIMIT */ #define AD7091R_HIGH_LIMIT 0xFFF #define AD7091R_LOW_LIMIT 0x0 -- 2.43.0

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patch "iio: adc: ad7091r: Allow users to configure device events" added to char-misc-next

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled iio: adc: ad7091r: Allow users to configure device events to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-next branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will also be merged in the next major kernel release during the merge window. If you have any questions about this process, please let me know. From 020e71c7ffc25dfe29ed9be6c2d39af7bd7f661f Mon Sep 17 00:00:00 2001 From: Marcelo Schmitt <marcelo.schmitt(a)analog.com> Date: Tue, 19 Dec 2023 17:26:01 -0300 Subject: iio: adc: ad7091r: Allow users to configure device events AD7091R-5 devices are supported by the ad7091r-5 driver together with the ad7091r-base driver. Those drivers declared iio events for notifying user space when ADC readings fall bellow the thresholds of low limit registers or above the values set in high limit registers. However, to configure iio events and their thresholds, a set of callback functions must be implemented and those were not present until now. The consequence of trying to configure ad7091r-5 events without the proper callback functions was a null pointer dereference in the kernel because the pointers to the callback functions were not set. Implement event configuration callbacks allowing users to read/write event thresholds and enable/disable event generation. Since the event spec structs are generic to AD7091R devices, also move those from the ad7091r-5 driver the base driver so they can be reused when support for ad7091r-2/-4/-8 be added. Fixes: ca69300173b6 ("iio: adc: Add support for AD7091R5 ADC") Suggested-by: David Lechner <dlechner(a)baylibre.com> Signed-off-by: Marcelo Schmitt <marcelo.schmitt(a)analog.com> Link: https://lore.kernel.org/r/59552d3548dabd56adc3107b7b4869afee2b0c3c.17030133… Cc: <Stable(a)vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron(a)huawei.com> --- drivers/iio/adc/ad7091r-base.c | 156 +++++++++++++++++++++++++++++++++ drivers/iio/adc/ad7091r-base.h | 6 ++ drivers/iio/adc/ad7091r5.c | 28 +----- 3 files changed, 166 insertions(+), 24 deletions(-) diff --git a/drivers/iio/adc/ad7091r-base.c b/drivers/iio/adc/ad7091r-base.c index d3d287d3b953..6d93da154810 100644 --- a/drivers/iio/adc/ad7091r-base.c +++ b/drivers/iio/adc/ad7091r-base.c @@ -6,6 +6,7 @@ */ #include <linux/bitops.h> +#include <linux/bitfield.h> #include <linux/iio/events.h> #include <linux/iio/iio.h> #include <linux/interrupt.h> @@ -50,6 +51,27 @@ struct ad7091r_state { struct mutex lock; /*lock to prevent concurent reads */ }; +const struct iio_event_spec ad7091r_events[] = { + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_RISING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_FALLING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_EITHER, + .mask_separate = BIT(IIO_EV_INFO_HYSTERESIS), + }, +}; +EXPORT_SYMBOL_NS_GPL(ad7091r_events, IIO_AD7091R); + static int ad7091r_set_mode(struct ad7091r_state *st, enum ad7091r_mode mode) { int ret, conf; @@ -169,8 +191,142 @@ static int ad7091r_read_raw(struct iio_dev *iio_dev, return ret; } +static int ad7091r_read_event_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir) +{ + struct ad7091r_state *st = iio_priv(indio_dev); + int val, ret; + + switch (dir) { + case IIO_EV_DIR_RISING: + ret = regmap_read(st->map, + AD7091R_REG_CH_HIGH_LIMIT(chan->channel), + &val); + if (ret) + return ret; + return val != AD7091R_HIGH_LIMIT; + case IIO_EV_DIR_FALLING: + ret = regmap_read(st->map, + AD7091R_REG_CH_LOW_LIMIT(chan->channel), + &val); + if (ret) + return ret; + return val != AD7091R_LOW_LIMIT; + default: + return -EINVAL; + } +} + +static int ad7091r_write_event_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, int state) +{ + struct ad7091r_state *st = iio_priv(indio_dev); + + if (state) { + return regmap_set_bits(st->map, AD7091R_REG_CONF, + AD7091R_REG_CONF_ALERT_EN); + } else { + /* + * Set thresholds either to 0 or to 2^12 - 1 as appropriate to + * prevent alerts and thus disable event generation. + */ + switch (dir) { + case IIO_EV_DIR_RISING: + return regmap_write(st->map, + AD7091R_REG_CH_HIGH_LIMIT(chan->channel), + AD7091R_HIGH_LIMIT); + case IIO_EV_DIR_FALLING: + return regmap_write(st->map, + AD7091R_REG_CH_LOW_LIMIT(chan->channel), + AD7091R_LOW_LIMIT); + default: + return -EINVAL; + } + } +} + +static int ad7091r_read_event_value(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, int *val, int *val2) +{ + struct ad7091r_state *st = iio_priv(indio_dev); + int ret; + + switch (info) { + case IIO_EV_INFO_VALUE: + switch (dir) { + case IIO_EV_DIR_RISING: + ret = regmap_read(st->map, + AD7091R_REG_CH_HIGH_LIMIT(chan->channel), + val); + if (ret) + return ret; + return IIO_VAL_INT; + case IIO_EV_DIR_FALLING: + ret = regmap_read(st->map, + AD7091R_REG_CH_LOW_LIMIT(chan->channel), + val); + if (ret) + return ret; + return IIO_VAL_INT; + default: + return -EINVAL; + } + case IIO_EV_INFO_HYSTERESIS: + ret = regmap_read(st->map, + AD7091R_REG_CH_HYSTERESIS(chan->channel), + val); + if (ret) + return ret; + return IIO_VAL_INT; + default: + return -EINVAL; + } +} + +static int ad7091r_write_event_value(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, int val, int val2) +{ + struct ad7091r_state *st = iio_priv(indio_dev); + + switch (info) { + case IIO_EV_INFO_VALUE: + switch (dir) { + case IIO_EV_DIR_RISING: + return regmap_write(st->map, + AD7091R_REG_CH_HIGH_LIMIT(chan->channel), + val); + case IIO_EV_DIR_FALLING: + return regmap_write(st->map, + AD7091R_REG_CH_LOW_LIMIT(chan->channel), + val); + default: + return -EINVAL; + } + case IIO_EV_INFO_HYSTERESIS: + return regmap_write(st->map, + AD7091R_REG_CH_HYSTERESIS(chan->channel), + val); + default: + return -EINVAL; + } +} + static const struct iio_info ad7091r_info = { .read_raw = ad7091r_read_raw, + .read_event_config = &ad7091r_read_event_config, + .write_event_config = &ad7091r_write_event_config, + .read_event_value = &ad7091r_read_event_value, + .write_event_value = &ad7091r_write_event_value, }; static irqreturn_t ad7091r_event_handler(int irq, void *private) diff --git a/drivers/iio/adc/ad7091r-base.h b/drivers/iio/adc/ad7091r-base.h index 509748aef9b1..7a78976a2f80 100644 --- a/drivers/iio/adc/ad7091r-base.h +++ b/drivers/iio/adc/ad7091r-base.h @@ -8,6 +8,10 @@ #ifndef __DRIVERS_IIO_ADC_AD7091R_BASE_H__ #define __DRIVERS_IIO_ADC_AD7091R_BASE_H__ +/* AD7091R_REG_CH_LIMIT */ +#define AD7091R_HIGH_LIMIT 0xFFF +#define AD7091R_LOW_LIMIT 0x0 + struct device; struct ad7091r_state; @@ -17,6 +21,8 @@ struct ad7091r_chip_info { unsigned int vref_mV; }; +extern const struct iio_event_spec ad7091r_events[3]; + extern const struct regmap_config ad7091r_regmap_config; int ad7091r_probe(struct device *dev, const char *name, diff --git a/drivers/iio/adc/ad7091r5.c b/drivers/iio/adc/ad7091r5.c index 2f048527b7b7..dae98c95ebb8 100644 --- a/drivers/iio/adc/ad7091r5.c +++ b/drivers/iio/adc/ad7091r5.c @@ -12,26 +12,6 @@ #include "ad7091r-base.h" -static const struct iio_event_spec ad7091r5_events[] = { - { - .type = IIO_EV_TYPE_THRESH, - .dir = IIO_EV_DIR_RISING, - .mask_separate = BIT(IIO_EV_INFO_VALUE) | - BIT(IIO_EV_INFO_ENABLE), - }, - { - .type = IIO_EV_TYPE_THRESH, - .dir = IIO_EV_DIR_FALLING, - .mask_separate = BIT(IIO_EV_INFO_VALUE) | - BIT(IIO_EV_INFO_ENABLE), - }, - { - .type = IIO_EV_TYPE_THRESH, - .dir = IIO_EV_DIR_EITHER, - .mask_separate = BIT(IIO_EV_INFO_HYSTERESIS), - }, -}; - #define AD7091R_CHANNEL(idx, bits, ev, num_ev) { \ .type = IIO_VOLTAGE, \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ @@ -44,10 +24,10 @@ static const struct iio_event_spec ad7091r5_events[] = { .scan_type.realbits = bits, \ } static const struct iio_chan_spec ad7091r5_channels_irq[] = { - AD7091R_CHANNEL(0, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), - AD7091R_CHANNEL(1, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), - AD7091R_CHANNEL(2, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), - AD7091R_CHANNEL(3, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), + AD7091R_CHANNEL(0, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), + AD7091R_CHANNEL(1, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), + AD7091R_CHANNEL(2, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), + AD7091R_CHANNEL(3, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), }; static const struct iio_chan_spec ad7091r5_channels_noirq[] = { -- 2.43.0

1 year, 2 months

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patch "iio: adc: ad7091r: Enable internal vref if external vref is not" added to char-misc-testing

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled iio: adc: ad7091r: Enable internal vref if external vref is not to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-testing branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will be merged to the char-misc-next branch sometime soon, after it passes testing, and the merge window is open. If you have any questions about this process, please let me know. From e71c5c89bcb165a02df35325aa13d1ee40112401 Mon Sep 17 00:00:00 2001 From: Marcelo Schmitt <marcelo.schmitt(a)analog.com> Date: Tue, 19 Dec 2023 17:26:27 -0300 Subject: iio: adc: ad7091r: Enable internal vref if external vref is not supplied The ADC needs a voltage reference to work correctly. Users can provide an external voltage reference or use the chip internal reference to operate the ADC. The availability of an in chip reference for the ADC saves the user from having to supply an external voltage reference, which makes the external reference an optional property as described in the device tree documentation. Though, to use the internal reference, it must be enabled by writing to the configuration register. Enable AD7091R internal voltage reference if no external vref is supplied. Fixes: 260442cc5be4 ("iio: adc: ad7091r5: Add scale and external VREF support") Signed-off-by: Marcelo Schmitt <marcelo.schmitt(a)analog.com> Link: https://lore.kernel.org/r/b865033fa6a4fc4bf2b4a98ec51a6144e0f64f77.17030133… Cc: <Stable(a)vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron(a)huawei.com> --- drivers/iio/adc/ad7091r-base.c | 7 +++++++ drivers/iio/adc/ad7091r-base.h | 2 ++ 2 files changed, 9 insertions(+) diff --git a/drivers/iio/adc/ad7091r-base.c b/drivers/iio/adc/ad7091r-base.c index 6d93da154810..7ccc9b44dcd8 100644 --- a/drivers/iio/adc/ad7091r-base.c +++ b/drivers/iio/adc/ad7091r-base.c @@ -406,7 +406,14 @@ int ad7091r_probe(struct device *dev, const char *name, if (IS_ERR(st->vref)) { if (PTR_ERR(st->vref) == -EPROBE_DEFER) return -EPROBE_DEFER; + st->vref = NULL; + /* Enable internal vref */ + ret = regmap_set_bits(st->map, AD7091R_REG_CONF, + AD7091R_REG_CONF_INT_VREF); + if (ret) + return dev_err_probe(st->dev, ret, + "Error on enable internal reference\n"); } else { ret = regulator_enable(st->vref); if (ret) diff --git a/drivers/iio/adc/ad7091r-base.h b/drivers/iio/adc/ad7091r-base.h index 7a78976a2f80..b9e1c8bf3440 100644 --- a/drivers/iio/adc/ad7091r-base.h +++ b/drivers/iio/adc/ad7091r-base.h @@ -8,6 +8,8 @@ #ifndef __DRIVERS_IIO_ADC_AD7091R_BASE_H__ #define __DRIVERS_IIO_ADC_AD7091R_BASE_H__ +#define AD7091R_REG_CONF_INT_VREF BIT(0) + /* AD7091R_REG_CH_LIMIT */ #define AD7091R_HIGH_LIMIT 0xFFF #define AD7091R_LOW_LIMIT 0x0 -- 2.43.0

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patch "iio: adc: ad7091r: Allow users to configure device events" added to char-misc-testing

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled iio: adc: ad7091r: Allow users to configure device events to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-testing branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will be merged to the char-misc-next branch sometime soon, after it passes testing, and the merge window is open. If you have any questions about this process, please let me know. From 020e71c7ffc25dfe29ed9be6c2d39af7bd7f661f Mon Sep 17 00:00:00 2001 From: Marcelo Schmitt <marcelo.schmitt(a)analog.com> Date: Tue, 19 Dec 2023 17:26:01 -0300 Subject: iio: adc: ad7091r: Allow users to configure device events AD7091R-5 devices are supported by the ad7091r-5 driver together with the ad7091r-base driver. Those drivers declared iio events for notifying user space when ADC readings fall bellow the thresholds of low limit registers or above the values set in high limit registers. However, to configure iio events and their thresholds, a set of callback functions must be implemented and those were not present until now. The consequence of trying to configure ad7091r-5 events without the proper callback functions was a null pointer dereference in the kernel because the pointers to the callback functions were not set. Implement event configuration callbacks allowing users to read/write event thresholds and enable/disable event generation. Since the event spec structs are generic to AD7091R devices, also move those from the ad7091r-5 driver the base driver so they can be reused when support for ad7091r-2/-4/-8 be added. Fixes: ca69300173b6 ("iio: adc: Add support for AD7091R5 ADC") Suggested-by: David Lechner <dlechner(a)baylibre.com> Signed-off-by: Marcelo Schmitt <marcelo.schmitt(a)analog.com> Link: https://lore.kernel.org/r/59552d3548dabd56adc3107b7b4869afee2b0c3c.17030133… Cc: <Stable(a)vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron(a)huawei.com> --- drivers/iio/adc/ad7091r-base.c | 156 +++++++++++++++++++++++++++++++++ drivers/iio/adc/ad7091r-base.h | 6 ++ drivers/iio/adc/ad7091r5.c | 28 +----- 3 files changed, 166 insertions(+), 24 deletions(-) diff --git a/drivers/iio/adc/ad7091r-base.c b/drivers/iio/adc/ad7091r-base.c index d3d287d3b953..6d93da154810 100644 --- a/drivers/iio/adc/ad7091r-base.c +++ b/drivers/iio/adc/ad7091r-base.c @@ -6,6 +6,7 @@ */ #include <linux/bitops.h> +#include <linux/bitfield.h> #include <linux/iio/events.h> #include <linux/iio/iio.h> #include <linux/interrupt.h> @@ -50,6 +51,27 @@ struct ad7091r_state { struct mutex lock; /*lock to prevent concurent reads */ }; +const struct iio_event_spec ad7091r_events[] = { + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_RISING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_FALLING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_EITHER, + .mask_separate = BIT(IIO_EV_INFO_HYSTERESIS), + }, +}; +EXPORT_SYMBOL_NS_GPL(ad7091r_events, IIO_AD7091R); + static int ad7091r_set_mode(struct ad7091r_state *st, enum ad7091r_mode mode) { int ret, conf; @@ -169,8 +191,142 @@ static int ad7091r_read_raw(struct iio_dev *iio_dev, return ret; } +static int ad7091r_read_event_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir) +{ + struct ad7091r_state *st = iio_priv(indio_dev); + int val, ret; + + switch (dir) { + case IIO_EV_DIR_RISING: + ret = regmap_read(st->map, + AD7091R_REG_CH_HIGH_LIMIT(chan->channel), + &val); + if (ret) + return ret; + return val != AD7091R_HIGH_LIMIT; + case IIO_EV_DIR_FALLING: + ret = regmap_read(st->map, + AD7091R_REG_CH_LOW_LIMIT(chan->channel), + &val); + if (ret) + return ret; + return val != AD7091R_LOW_LIMIT; + default: + return -EINVAL; + } +} + +static int ad7091r_write_event_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, int state) +{ + struct ad7091r_state *st = iio_priv(indio_dev); + + if (state) { + return regmap_set_bits(st->map, AD7091R_REG_CONF, + AD7091R_REG_CONF_ALERT_EN); + } else { + /* + * Set thresholds either to 0 or to 2^12 - 1 as appropriate to + * prevent alerts and thus disable event generation. + */ + switch (dir) { + case IIO_EV_DIR_RISING: + return regmap_write(st->map, + AD7091R_REG_CH_HIGH_LIMIT(chan->channel), + AD7091R_HIGH_LIMIT); + case IIO_EV_DIR_FALLING: + return regmap_write(st->map, + AD7091R_REG_CH_LOW_LIMIT(chan->channel), + AD7091R_LOW_LIMIT); + default: + return -EINVAL; + } + } +} + +static int ad7091r_read_event_value(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, int *val, int *val2) +{ + struct ad7091r_state *st = iio_priv(indio_dev); + int ret; + + switch (info) { + case IIO_EV_INFO_VALUE: + switch (dir) { + case IIO_EV_DIR_RISING: + ret = regmap_read(st->map, + AD7091R_REG_CH_HIGH_LIMIT(chan->channel), + val); + if (ret) + return ret; + return IIO_VAL_INT; + case IIO_EV_DIR_FALLING: + ret = regmap_read(st->map, + AD7091R_REG_CH_LOW_LIMIT(chan->channel), + val); + if (ret) + return ret; + return IIO_VAL_INT; + default: + return -EINVAL; + } + case IIO_EV_INFO_HYSTERESIS: + ret = regmap_read(st->map, + AD7091R_REG_CH_HYSTERESIS(chan->channel), + val); + if (ret) + return ret; + return IIO_VAL_INT; + default: + return -EINVAL; + } +} + +static int ad7091r_write_event_value(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, int val, int val2) +{ + struct ad7091r_state *st = iio_priv(indio_dev); + + switch (info) { + case IIO_EV_INFO_VALUE: + switch (dir) { + case IIO_EV_DIR_RISING: + return regmap_write(st->map, + AD7091R_REG_CH_HIGH_LIMIT(chan->channel), + val); + case IIO_EV_DIR_FALLING: + return regmap_write(st->map, + AD7091R_REG_CH_LOW_LIMIT(chan->channel), + val); + default: + return -EINVAL; + } + case IIO_EV_INFO_HYSTERESIS: + return regmap_write(st->map, + AD7091R_REG_CH_HYSTERESIS(chan->channel), + val); + default: + return -EINVAL; + } +} + static const struct iio_info ad7091r_info = { .read_raw = ad7091r_read_raw, + .read_event_config = &ad7091r_read_event_config, + .write_event_config = &ad7091r_write_event_config, + .read_event_value = &ad7091r_read_event_value, + .write_event_value = &ad7091r_write_event_value, }; static irqreturn_t ad7091r_event_handler(int irq, void *private) diff --git a/drivers/iio/adc/ad7091r-base.h b/drivers/iio/adc/ad7091r-base.h index 509748aef9b1..7a78976a2f80 100644 --- a/drivers/iio/adc/ad7091r-base.h +++ b/drivers/iio/adc/ad7091r-base.h @@ -8,6 +8,10 @@ #ifndef __DRIVERS_IIO_ADC_AD7091R_BASE_H__ #define __DRIVERS_IIO_ADC_AD7091R_BASE_H__ +/* AD7091R_REG_CH_LIMIT */ +#define AD7091R_HIGH_LIMIT 0xFFF +#define AD7091R_LOW_LIMIT 0x0 + struct device; struct ad7091r_state; @@ -17,6 +21,8 @@ struct ad7091r_chip_info { unsigned int vref_mV; }; +extern const struct iio_event_spec ad7091r_events[3]; + extern const struct regmap_config ad7091r_regmap_config; int ad7091r_probe(struct device *dev, const char *name, diff --git a/drivers/iio/adc/ad7091r5.c b/drivers/iio/adc/ad7091r5.c index 2f048527b7b7..dae98c95ebb8 100644 --- a/drivers/iio/adc/ad7091r5.c +++ b/drivers/iio/adc/ad7091r5.c @@ -12,26 +12,6 @@ #include "ad7091r-base.h" -static const struct iio_event_spec ad7091r5_events[] = { - { - .type = IIO_EV_TYPE_THRESH, - .dir = IIO_EV_DIR_RISING, - .mask_separate = BIT(IIO_EV_INFO_VALUE) | - BIT(IIO_EV_INFO_ENABLE), - }, - { - .type = IIO_EV_TYPE_THRESH, - .dir = IIO_EV_DIR_FALLING, - .mask_separate = BIT(IIO_EV_INFO_VALUE) | - BIT(IIO_EV_INFO_ENABLE), - }, - { - .type = IIO_EV_TYPE_THRESH, - .dir = IIO_EV_DIR_EITHER, - .mask_separate = BIT(IIO_EV_INFO_HYSTERESIS), - }, -}; - #define AD7091R_CHANNEL(idx, bits, ev, num_ev) { \ .type = IIO_VOLTAGE, \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ @@ -44,10 +24,10 @@ static const struct iio_event_spec ad7091r5_events[] = { .scan_type.realbits = bits, \ } static const struct iio_chan_spec ad7091r5_channels_irq[] = { - AD7091R_CHANNEL(0, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), - AD7091R_CHANNEL(1, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), - AD7091R_CHANNEL(2, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), - AD7091R_CHANNEL(3, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), + AD7091R_CHANNEL(0, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), + AD7091R_CHANNEL(1, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), + AD7091R_CHANNEL(2, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), + AD7091R_CHANNEL(3, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), }; static const struct iio_chan_spec ad7091r5_channels_noirq[] = { -- 2.43.0

1 year, 2 months

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[PATCH 6.1.y 00/73] ksmbd backport patches for linux-6.1.y

by Namjae Jeon

This patchset backport ksmbd patches between 6.1 and 6.7-rc5 kernel. Bug fixes and CVE patches were not applied well due to clean-up and new feautre patches. To facilitate backport, This patch-set included clean-up patches and new feature patches of ksmbd for stable 6.1 kernel. -- 2.25.1

1 year, 2 months

1
73
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[PATCH 1/2] wifi: cfg80211: fix CQM for non-range use

by Léo Lam

From: Johannes Berg <johannes.berg(a)intel.com> commit 7e7efdda6adb385fbdfd6f819d76bc68c923c394 upstream. [note: this is commit 4a7e92551618f3737b305f62451353ee05662f57 reapplied; that commit had been reverted in 6.6.6 because it caused regressions, see https://lore.kernel.org/stable/2023121450-habitual-transpose-68a1@gregkh/ for details] My prior race fix here broke CQM when ranges aren't used, as the reporting worker now requires the cqm_config to be set in the wdev, but isn't set when there's no range configured. Rather than continuing to special-case the range version, set the cqm_config always and configure accordingly, also tracking if range was used or not to be able to clear the configuration appropriately with the same API, which was actually not right if both were implemented by a driver for some reason, as is the case with mac80211 (though there the implementations are equivalent so it doesn't matter.) Also, the original multiple-RSSI commit lost checking for the callback, so might have potentially crashed if a driver had neither implementation, and userspace tried to use it despite not being advertised as supported. Cc: stable(a)vger.kernel.org Fixes: 4a4b8169501b ("cfg80211: Accept multiple RSSI thresholds for CQM") Fixes: 37c20b2effe9 ("wifi: cfg80211: fix cqm_config access race") Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Léo Lam <leo(a)leolam.fr> --- net/wireless/core.h | 1 + net/wireless/nl80211.c | 50 ++++++++++++++++++++++++++---------------- 2 files changed, 32 insertions(+), 19 deletions(-) diff --git a/net/wireless/core.h b/net/wireless/core.h index e536c0b615a0..f0a3a2317638 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -299,6 +299,7 @@ struct cfg80211_cqm_config { u32 rssi_hyst; s32 last_rssi_event_value; enum nl80211_cqm_rssi_threshold_event last_rssi_event_type; + bool use_range_api; int n_rssi_thresholds; s32 rssi_thresholds[] __counted_by(n_rssi_thresholds); }; diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 931a03f4549c..6a82dd876f27 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -12824,10 +12824,6 @@ static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev, int i, n, low_index; int err; - /* RSSI reporting disabled? */ - if (!cqm_config) - return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0); - /* * Obtain current RSSI value if possible, if not and no RSSI threshold * event has been received yet, we should receive an event after a @@ -12902,18 +12898,6 @@ static int nl80211_set_cqm_rssi(struct genl_info *info, wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) return -EOPNOTSUPP; - if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) { - if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */ - return rdev_set_cqm_rssi_config(rdev, dev, 0, 0); - - return rdev_set_cqm_rssi_config(rdev, dev, - thresholds[0], hysteresis); - } - - if (!wiphy_ext_feature_isset(&rdev->wiphy, - NL80211_EXT_FEATURE_CQM_RSSI_LIST)) - return -EOPNOTSUPP; - if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */ n_thresholds = 0; @@ -12921,6 +12905,20 @@ static int nl80211_set_cqm_rssi(struct genl_info *info, old = rcu_dereference_protected(wdev->cqm_config, lockdep_is_held(&wdev->mtx)); + /* if already disabled just succeed */ + if (!n_thresholds && !old) + return 0; + + if (n_thresholds > 1) { + if (!wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_CQM_RSSI_LIST) || + !rdev->ops->set_cqm_rssi_range_config) + return -EOPNOTSUPP; + } else { + if (!rdev->ops->set_cqm_rssi_config) + return -EOPNOTSUPP; + } + if (n_thresholds) { cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds, n_thresholds), @@ -12935,13 +12933,26 @@ static int nl80211_set_cqm_rssi(struct genl_info *info, memcpy(cqm_config->rssi_thresholds, thresholds, flex_array_size(cqm_config, rssi_thresholds, n_thresholds)); + cqm_config->use_range_api = n_thresholds > 1 || + !rdev->ops->set_cqm_rssi_config; rcu_assign_pointer(wdev->cqm_config, cqm_config); + + if (cqm_config->use_range_api) + err = cfg80211_cqm_rssi_update(rdev, dev, cqm_config); + else + err = rdev_set_cqm_rssi_config(rdev, dev, + thresholds[0], + hysteresis); } else { RCU_INIT_POINTER(wdev->cqm_config, NULL); + /* if enabled as range also disable via range */ + if (old->use_range_api) + err = rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0); + else + err = rdev_set_cqm_rssi_config(rdev, dev, 0, 0); } - err = cfg80211_cqm_rssi_update(rdev, dev, cqm_config); if (err) { rcu_assign_pointer(wdev->cqm_config, old); kfree_rcu(cqm_config, rcu_head); @@ -19131,10 +19142,11 @@ void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy, struct wiphy_work *work) wdev_lock(wdev); cqm_config = rcu_dereference_protected(wdev->cqm_config, lockdep_is_held(&wdev->mtx)); - if (!wdev->cqm_config) + if (!cqm_config) goto unlock; - cfg80211_cqm_rssi_update(rdev, wdev->netdev, cqm_config); + if (cqm_config->use_range_api) + cfg80211_cqm_rssi_update(rdev, wdev->netdev, cqm_config); rssi_level = cqm_config->last_rssi_event_value; rssi_event = cqm_config->last_rssi_event_type; -- 2.43.0

1 year, 2 months

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Linux-stable-mirror December 2023