linux-toradex.git/drivers/platform, branch v6.19 Linux kernel for Apalis and Colibri modules platform/x86/intel/tpmi/plr: Make the file domain<n>/status writeable 2026-01-29T12:38:40+00:00 Ricardo Neri ricardo.neri-calderon@linux.intel.com 2026-01-27T23:45:40+00:00 008bec8ffe6e7746588d1e12c5b3865fa478fc91 The file sys/kernel/debug/tpmi-<n>/plr/domain<n>/status has store and show callbacks. Make it writeable. Fixes: 811f67c51636d ("platform/x86/intel/tpmi: Add new auxiliary driver for performance limits") Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> Link: https://patch.msgid.link/20260127-plr-debugfs-write-v1-1-1fffbc370b1e@linux.intel.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
The file sys/kernel/debug/tpmi-<n>/plr/domain<n>/status has store and show
callbacks. Make it writeable.

Fixes: 811f67c51636d ("platform/x86/intel/tpmi: Add new auxiliary driver for performance limits")
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Link: https://patch.msgid.link/20260127-plr-debugfs-write-v1-1-1fffbc370b1e@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
platform/x86: hp-bioscfg: Skip empty attribute names 2026-01-29T12:37:24+00:00 Mario Limonciello mario.limonciello@amd.com 2026-01-28T19:04:45+00:00 6222883af286e2feb3c9ff2bf9fd8fdf4220c55a Avoid registering kobjects with empty names when a BIOS attribute name decodes to an empty string. Fixes: a34fc329b1895 ("platform/x86: hp-bioscfg: bioscfg") Reported-by: Alain Cousinie <alain.cousinie@laposte.net> Closes: https://lore.kernel.org/platform-driver-x86/22ed5f78-c8bf-4ab4-8c38-420cc0201e7e@laposte.net/ Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://patch.msgid.link/20260128190501.2170068-1-mario.limonciello@amd.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
Avoid registering kobjects with empty names when a BIOS attribute
name decodes to an empty string.

Fixes: a34fc329b1895 ("platform/x86: hp-bioscfg: bioscfg")
Reported-by: Alain Cousinie <alain.cousinie@laposte.net>
Closes: https://lore.kernel.org/platform-driver-x86/22ed5f78-c8bf-4ab4-8c38-420cc0201e7e@laposte.net/
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://patch.msgid.link/20260128190501.2170068-1-mario.limonciello@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
platform/x86: classmate-laptop: Add missing NULL pointer checks 2026-01-28T12:57:26+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2026-01-26T20:02:40+00:00 fe747d7112283f47169e9c16e751179a9b38611e In a few places in the Classmate laptop driver, code using the accel object may run before that object's address is stored in the driver data of the input device using it. For example, cmpc_accel_sensitivity_store_v4() is the "show" method of cmpc_accel_sensitivity_attr_v4 which is added in cmpc_accel_add_v4(), before calling dev_set_drvdata() for inputdev->dev. If the sysfs attribute is accessed prematurely, the dev_get_drvdata(&inputdev->dev) call in in cmpc_accel_sensitivity_store_v4() returns NULL which leads to a NULL pointer dereference going forward. Moreover, sysfs attributes using the input device are added before initializing that device by cmpc_add_acpi_notify_device() and if one of them is accessed before running that function, a NULL pointer dereference will occur. For example, cmpc_accel_sensitivity_attr_v4 is added before calling cmpc_add_acpi_notify_device() and if it is read prematurely, the dev_get_drvdata(&acpi->dev) call in cmpc_accel_sensitivity_show_v4() returns NULL which leads to a NULL pointer dereference going forward. Fix this by adding NULL pointer checks in all of the relevant places. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/12825381.O9o76ZdvQC@rafael.j.wysocki Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
In a few places in the Classmate laptop driver, code using the accel
object may run before that object's address is stored in the driver
data of the input device using it.

For example, cmpc_accel_sensitivity_store_v4() is the "show" method
of cmpc_accel_sensitivity_attr_v4 which is added in cmpc_accel_add_v4(),
before calling dev_set_drvdata() for inputdev->dev.  If the sysfs
attribute is accessed prematurely, the dev_get_drvdata(&inputdev->dev)
call in in cmpc_accel_sensitivity_store_v4() returns NULL which
leads to a NULL pointer dereference going forward.

Moreover, sysfs attributes using the input device are added before
initializing that device by cmpc_add_acpi_notify_device() and if one
of them is accessed before running that function, a NULL pointer
dereference will occur.

For example, cmpc_accel_sensitivity_attr_v4 is added before calling
cmpc_add_acpi_notify_device() and if it is read prematurely, the
dev_get_drvdata(&acpi->dev) call in cmpc_accel_sensitivity_show_v4()
returns NULL which leads to a NULL pointer dereference going forward.

Fix this by adding NULL pointer checks in all of the relevant places.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/12825381.O9o76ZdvQC@rafael.j.wysocki
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
platform/x86: lg-laptop: Recognize 2022-2025 models 2026-01-26T14:44:40+00:00 Jonas Ringeis private@glitchdev.me 2026-01-23T22:54:23+00:00 662c9cb86fc322038647d8808e751f5c6c0cc13f The lg-laptop driver uses the DMI to identify the product year. Currently, the driver recognizes all models released after 2022 incorrectly as 2022. Update logic to handle model identifiers for years 2022-2025. Link: https://en.wikipedia.org/w/index.php?title=LG_Gram&oldid=1327931565#Comparison_of_Gram_models Signed-off-by: Jonas Ringeis <private@glitchdev.me> Link: https://patch.msgid.link/20260123225503.493467-1-private@glitchdev.me Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
The lg-laptop driver uses the DMI to identify the product year.
Currently, the driver recognizes all models released after 2022
incorrectly as 2022.

Update logic to handle model identifiers for years 2022-2025.

Link: https://en.wikipedia.org/w/index.php?title=LG_Gram&oldid=1327931565#Comparison_of_Gram_models
Signed-off-by: Jonas Ringeis <private@glitchdev.me>
Link: https://patch.msgid.link/20260123225503.493467-1-private@glitchdev.me
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
platform/x86/amd/pmc: Add quirk for MECHREVO Wujie 15X Pro 2026-01-26T14:43:51+00:00 gongqi 550230171hxy@gmail.com 2026-01-22T15:55:00+00:00 2b4e00d8e70ca8736fda82447be6a4e323c6d1f5 The MECHREVO Wujie 15X Pro suffers from spurious IRQ issues related to the AMD PMC. Add it to the quirk list to use the spurious_8042 fix. Signed-off-by: gongqi <550230171hxy@gmail.com> Link: https://patch.msgid.link/20260122155501.376199-4-550230171hxy@gmail.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
The MECHREVO Wujie 15X Pro suffers from spurious IRQ issues related to
the AMD PMC. Add it to the quirk list to use the spurious_8042 fix.

Signed-off-by: gongqi <550230171hxy@gmail.com>
Link: https://patch.msgid.link/20260122155501.376199-4-550230171hxy@gmail.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
platform/x86: intel_telemetry: Fix PSS event register mask 2026-01-26T14:42:43+00:00 Kaushlendra Kumar kaushlendra.kumar@intel.com 2025-12-24T06:11:44+00:00 39e9c376ac42705af4ed4ae39eec028e8bced9b4 The PSS telemetry info parsing incorrectly applies TELEM_INFO_SRAMEVTS_MASK when extracting event register count from firmware response. This reads bits 15-8 instead of the correct bits 7-0, causing misdetection of hardware capabilities. The IOSS path correctly uses TELEM_INFO_NENABLES_MASK for register count. Apply the same mask to PSS parsing for consistency. Fixes: 9d16b482b059 ("platform:x86: Add Intel telemetry platform driver") Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com> Link: https://patch.msgid.link/20251224061144.3925519-1-kaushlendra.kumar@intel.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
The PSS telemetry info parsing incorrectly applies
TELEM_INFO_SRAMEVTS_MASK when extracting event register
count from firmware response. This reads bits 15-8 instead
of the correct bits 7-0, causing misdetection of hardware
capabilities.

The IOSS path correctly uses TELEM_INFO_NENABLES_MASK for
register count. Apply the same mask to PSS parsing for
consistency.

Fixes: 9d16b482b059 ("platform:x86: Add Intel telemetry platform driver")
Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
Link: https://patch.msgid.link/20251224061144.3925519-1-kaushlendra.kumar@intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
platform/x86: intel_telemetry: Fix swapped arrays in PSS output 2026-01-26T14:42:25+00:00 Kaushlendra Kumar kaushlendra.kumar@intel.com 2025-12-24T03:20:53+00:00 25e9e322d2ab5c03602eff4fbf4f7c40019d8de2 The LTR blocking statistics and wakeup event counters are incorrectly cross-referenced during debugfs output rendering. The code populates pss_ltr_blkd[] with LTR blocking data and pss_s0ix_wakeup[] with wakeup data, but the display loops reference the wrong arrays. This causes the "LTR Blocking Status" section to print wakeup events and the "Wakes Status" section to print LTR blockers, misleading power management analysis and S0ix residency debugging. Fix by aligning array usage with the intended output section labels. Fixes: 87bee290998d ("platform:x86: Add Intel Telemetry Debugfs interfaces") Cc: stable@vger.kernel.org Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com> Link: https://patch.msgid.link/20251224032053.3915900-1-kaushlendra.kumar@intel.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
The LTR blocking statistics and wakeup event counters are incorrectly
cross-referenced during debugfs output rendering. The code populates
pss_ltr_blkd[] with LTR blocking data and pss_s0ix_wakeup[] with wakeup
data, but the display loops reference the wrong arrays.

This causes the "LTR Blocking Status" section to print wakeup events
and the "Wakes Status" section to print LTR blockers, misleading power
management analysis and S0ix residency debugging.

Fix by aligning array usage with the intended output section labels.

Fixes: 87bee290998d ("platform:x86: Add Intel Telemetry Debugfs interfaces")
Cc: stable@vger.kernel.org
Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
Link: https://patch.msgid.link/20251224032053.3915900-1-kaushlendra.kumar@intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
platform/x86/intel/vsec: Add Nova Lake PUNIT support 2026-01-26T14:42:02+00:00 David E. Box david.e.box@linux.intel.com 2026-01-22T02:21:08+00:00 98bdc485b281da7e20e67b13a8cc834956d68e9c Add PCI ID for Nova Lake, supporting PUNIT telemetry. Signed-off-by: David E. Box <david.e.box@linux.intel.com> Link: https://patch.msgid.link/20260122022110.3231344-1-david.e.box@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
Add PCI ID for Nova Lake, supporting PUNIT telemetry.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Link: https://patch.msgid.link/20260122022110.3231344-1-david.e.box@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
platform/x86: toshiba_haps: Fix memory leaks in add/remove routines 2026-01-26T14:38:45+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2026-01-26T14:38:45+00:00 128497456756e1b952bd5a912cd073836465109d toshiba_haps_add() leaks the haps object allocated by it if it returns an error after allocating that object successfully. toshiba_haps_remove() does not free the object pointed to by toshiba_haps before clearing that pointer, so it becomes unreachable allocated memory. Address these memory leaks by using devm_kzalloc() for allocating the memory in question. Fixes: 23d0ba0c908a ("platform/x86: Toshiba HDD Active Protection Sensor") Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 
toshiba_haps_add() leaks the haps object allocated by it if it returns
an error after allocating that object successfully.

toshiba_haps_remove() does not free the object pointed to by
toshiba_haps before clearing that pointer, so it becomes unreachable
allocated memory.

Address these memory leaks by using devm_kzalloc() for allocating
the memory in question.

Fixes: 23d0ba0c908a ("platform/x86: Toshiba HDD Active Protection Sensor")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
platform/x86: panasonic-laptop: Fix sysfs group leak in error path 2026-01-26T14:38:04+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2026-01-20T15:43:44+00:00 43b0b7eff4b3fb684f257d5a24376782e9663465 The acpi_pcc_hotkey_add() error path leaks sysfs group pcc_attr_group if platform_device_register_simple() fails for the "panasonic" platform device. Address this by making it call sysfs_remove_group() in that case for the group in question. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/3398370.44csPzL39Z@rafael.j.wysocki Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> 
The acpi_pcc_hotkey_add() error path leaks sysfs group pcc_attr_group
if platform_device_register_simple() fails for the "panasonic" platform
device.

Address this by making it call sysfs_remove_group() in that case for
the group in question.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3398370.44csPzL39Z@rafael.j.wysocki
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>