linux-stable.git/drivers/platform, branch v6.18.2

platform/x86: asus-wmi: use brightness_set_blocking() for kbd led

2025-12-18T13:03:35+00:00

[ Upstream commit ccb61a328321ba3f8567e350664c9ca7a42b6c70 ]

kbd_led_set() can sleep, and so may not be used as the brightness_set()
callback.

Otherwise using this led with a trigger leads to system hangs
accompanied by:
BUG: scheduling while atomic: acpi_fakekeyd/2588/0x00000003
CPU: 4 UID: 0 PID: 2588 Comm: acpi_fakekeyd Not tainted 6.17.9+deb14-amd64 #1 PREEMPT(lazy)  Debian 6.17.9-1
Hardware name: ASUSTeK COMPUTER INC. ASUS EXPERTBOOK B9403CVAR/B9403CVAR, BIOS B9403CVAR.311 12/24/2024
Call Trace:
 
 [...]
 schedule_timeout+0xbd/0x100
 __down_common+0x175/0x290
 down_timeout+0x67/0x70
 acpi_os_wait_semaphore+0x57/0x90
 [...]
 asus_wmi_evaluate_method3+0x87/0x190 [asus_wmi]
 led_trigger_event+0x3f/0x60
 [...]

Fixes: 9fe44fc98ce4 ("platform/x86: asus-wmi: Simplify the keyboard brightness updating process")
Signed-off-by: Anton Khirnov 
Reviewed-by: Andy Shevchenko 
Reviewed-by: Denis Benato 
Link: https://patch.msgid.link/20251129101307.18085-3-anton@khirnov.net
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin

platform/x86:intel/pmc: Update Arrow Lake telemetry GUID

2025-12-18T13:03:33+00:00

[ Upstream commit 644ab3bc98ee386f178d5209ae8170b3fac591aa ]

Update ARL_PMT_DMU_GUID value. Arrow Lake PMT DMU GUID has been updated
after it was add to the driver. This updates ensures that the die C6
value is available in the debug filesystem.

Bugzilla Link: https://bugzilla.kernel.org/show_bug.cgi?id=220421
Fixes: 83f168a1a437 ("platform/x86/intel/pmc: Add Arrow Lake S support to intel_pmc_core driver")
Tested-by: Mark Pearson 
Signed-off-by: Xi Pardee 
Link: https://patch.msgid.link/20251014214548.629023-2-xi.pardee@linux.intel.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin

Merge tag 'platform-drivers-x86-v6.18-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

2025-11-27T16:51:36+00:00

Pull platform driver fixes from Ilpo Järvinen:

 - arm64/thinkpad-t14s-ec:
    - Fix IRQ race condition
    - Sleep after EC access

 - intel/punit_ipc: Fix memory corruption

* tag 'platform-drivers-x86-v6.18-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
  platform/x86: intel: punit_ipc: fix memory corruption
  platform: arm64: thinkpad-t14s-ec: sleep after EC access
  platform: arm64: thinkpad-t14s-ec: fix IRQ race condition

platform/x86: intel: punit_ipc: fix memory corruption

2025-11-24T13:03:22+00:00

This passes the address of the pointer "&punit_ipcdev" when the intent
was to pass the pointer itself "punit_ipcdev" (without the ampersand).
This means that the:

	complete(&ipcdev->cmd_complete);

in intel_punit_ioc() will write to a wrong memory address corrupting it.

Fixes: fdca4f16f57d ("platform:x86: add Intel P-Unit mailbox IPC driver")
Signed-off-by: Dan Carpenter 
Link: https://patch.msgid.link/aSCmoBipSQ_tlD-D@stanley.mountain
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

platform: arm64: thinkpad-t14s-ec: sleep after EC access

2025-11-21T17:05:27+00:00

The ACPI ECRD and ECWR functions have a 10ms sleep at the end. It turns
out, that this is sometimes needed to avoid I2C transmission failures,
especially for functions doing regmap_update_bits (and thus read + write
shortly after each other). This fixes problems like the following
appearing in the kernel log:

leds platform::micmute: Setting an LED's brightness failed (-6)
leds platform::kbd_backlight: Setting an LED's brightness failed (-6)

The ACPI QEVT function used to read the interrupt status register also
has a 10ms sleep at the end. Without that there are problems with
reading multiple events following directly after each other resulting
in the following error message being logged:

thinkpad-t14s-ec 4-0028: Failed to read event

Fixes: 60b7ab6ce030 ("platform: arm64: thinkpad-t14s-ec: new driver")
Signed-off-by: Sebastian Reichel 
Link: https://patch.msgid.link/20251119-thinkpad-t14s-ec-improvements-v2-2-441219857c02@kernel.org
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

platform: arm64: thinkpad-t14s-ec: fix IRQ race condition

2025-11-21T17:05:25+00:00

Fix a race condition, that an input key related interrupt might be
triggered before the input handler has been registered, which results
in a NULL pointer dereference. This can happen if the user enables
the keyboard backlight shortly before the driver is being probed.

This fixes the following backtrace visible in dmesg:

Unable to handle kernel NULL pointer dereference at virtual address 00000000000000e0
...
Call trace:
 sparse_keymap_report_event+0x2c/0x978 [sparse_keymap] (P)
 t14s_ec_irq_handler+0x190/0x3e8 [lenovo_thinkpad_t14s]
 irq_thread_fn+0x30/0xb8
 irq_thread+0x18c/0x3b0
 kthread+0x148/0x228
 ret_from_fork+0x10/0x20

Fixes: 60b7ab6ce030 ("platform: arm64: thinkpad-t14s-ec: new driver")
Signed-off-by: Sebastian Reichel 
Reviewed-by: Bryan O'Donoghue 
Link: https://patch.msgid.link/20251119-thinkpad-t14s-ec-improvements-v2-1-441219857c02@kernel.org
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

Merge tag 'platform-drivers-x86-v6.18-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

2025-11-20T17:39:34+00:00

Pull x86 platform driver fixes from Ilpo Järvinen:
 "This one has lots of new HW entries which adds to the size in diffstat
  but the individual changes are simple.

  Fixes

   - acer-wmi: Ignore backlight event

   - alienware-wmi-wmax: Fix quirk match table order & drop redundant
     entries

   - amd/pmc:
      - Add Xbox Ally to spurious 8042 quirk list
      - Quirk list Lenovo Legion Go 2 NVMe resume

   - msi-wmi-platform:
      - Correct GUID to uppercase
      - GUID is uncleverly copy-pasted from an example so add a DMI
        whitelist

   - intel/speed_select_if: PCIBIOS_* return code conversion

   - intel-uncore-freq & ISST: Fix kernel doc warnings

  New HW support

   - alienware-wmi-wmax:
      - Alienware 16 Aurora support
      - Alienware M support
      - Alienware X support
      - Dell G support

   - amd/pmc:
      - ROG Xbox Ally (non-X) support

   - huaway-wmi: HONOR MagicBoox X16/X14 PrintScreen & YOYO keys

   - hp-wmi:
      - Omen 16-wf1xxx fan support
      - Omen MAX 16-ah0xx fan + thermal profile support
      - Victus 16-r0 and 16-s0 fan + thermal profile support

   - intel/hid: Intel Nova Lake support

   - intel-uncore-freq:
      - Intel Panther Lake support
      - Intel Wildcat Lake support
      - Intel Nova Lake support"

* tag 'platform-drivers-x86-v6.18-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (21 commits)
  platform/x86: intel-uncore-freq: fix all header kernel-doc warnings
  platform/x86: acer-wmi: Ignore backlight event
  platform/x86/intel/speed_select_if: Convert PCIBIOS_* return codes to errnos
  platform/x86/intel/hid: Add Nova Lake support
  platform/x86: alienware-wmi-wmax: Add AWCC support to Alienware 16 Aurora
  platform/x86: hp-wmi: Add Omen MAX 16-ah0xx fan support and thermal profile
  platform/x86: msi-wmi-platform: Fix typo in WMI GUID
  platform/x86: msi-wmi-platform: Only load on MSI devices
  platform/x86/amd: pmc: Add Lenovo Legion Go 2 to pmc quirk list
  platform/x86/amd/pmc: Add spurious_8042 to Xbox Ally
  platform/x86/amd/pmc: Add support for Van Gogh SoC
  platform/x86: alienware-wmi-wmax: Add support for the whole "G" family
  platform/x86: alienware-wmi-wmax: Add support for the whole "X" family
  platform/x86: alienware-wmi-wmax: Add support for the whole "M" family
  platform/x86: alienware-wmi-wmax: Drop redundant DMI entries
  platform/x86: alienware-wmi-wmax: Fix "Alienware m16 R1 AMD" quirk order
  platform/x86: ISST: isst_if.h: fix all kernel-doc warnings
  platform/x86: intel-uncore-freq: Add additional client processors
  platform/x86: hp-wmi: Add Omen 16-wf1xxx fan support
  platform/x86: huawei-wmi: add keys for HONOR models
  ...

platform/x86: intel-uncore-freq: fix all header kernel-doc warnings

2025-11-18T07:37:21+00:00

In file uncore-frequency/uncore-frequency-common.h,
correct all kernel-doc warnings by adding missing leading " *" to some
lines, adding a missing kernel-doc entry, and fixing a name typo.

Warning: uncore-frequency-common.h:50 bad line:
   Storage for kobject attribute elc_low_threshold_percent
Warning: uncore-frequency-common.h:52 bad line:
   Storage for kobject attribute elc_high_threshold_percent
Warning: uncore-frequency-common.h:54 bad line:
   Storage for kobject attribute elc_high_threshold_enable
Warning: uncore-frequency-common.h:92 struct member
 'min_freq_khz_kobj_attr' not described in 'uncore_data'
Warning: uncore-frequency-common.h:92 struct member
 'die_id_kobj_attr' not described in 'uncore_data'

Fixes: 24b6616355f7 ("platform/x86/intel-uncore-freq: Add efficiency latency control to sysfs interface")
Fixes: 416de0246f35 ("platform/x86: intel-uncore-freq: Fix types in sysfs callbacks")
Fixes: 247b43fcd872 ("platform/x86/intel-uncore-freq: Add attributes to show die_id")
Signed-off-by: Randy Dunlap 
Link: https://patch.msgid.link/20251111060938.1998542-1-rdunlap@infradead.org
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

platform/x86: acer-wmi: Ignore backlight event

2025-11-18T07:35:53+00:00

On the Acer Nitro AN515-58, the event 4 - 0 is send by the ACPI
firmware when the backlight up/down keys are pressed. Ignore this
event to avoid spamming the kernel log with error messages, as the
acpi-video driver already handles brightness up/down events.

Reported-by: Bugaddr 
Closes: https://bugaddr.tech/posts/2025-11-16-debugging-the-acer-nitro-5-an515-58-fn-f10-keyboard-backlight-bug-on-linux/#wmi-interface-issues
Tested-by: Bugaddr 
Signed-off-by: Armin Wolf 
Link: https://patch.msgid.link/20251117155938.3030-1-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

platform/x86/intel/speed_select_if: Convert PCIBIOS_* return codes to errnos

2025-11-18T07:35:12+00:00

isst_if_probe() uses pci_read_config_dword() that returns PCIBIOS_*
codes. The return code is returned from the probe function as is but
probe functions should return normal errnos. A proper implementation
can be found in drivers/leds/leds-ss4200.c.

Convert PCIBIOS_* return codes using pcibios_err_to_errno() into
normal errno before returning.

Fixes: d3a23584294c ("platform/x86: ISST: Add Intel Speed Select mmio interface")
Signed-off-by: Haotian Zhang 
Acked-by: Srinivas Pandruvada 
Link: https://patch.msgid.link/20251117033354.132-1-vulab@iscas.ac.cn
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen