linux-stable.git/drivers/platform, branch v6.18.33

platform/x86: lenovo-wmi-other: Fix tunable_attr_01 struct members

2026-05-23T11:07:17+00:00

commit 71f3843e0f81e3c097a088c1121154bb9a44da0a upstream.

In struct tunable_attr_01 the capdata pointer is unused and the size of
the id members is u32 when it should be u8. Fix these prior to adding
additional members.

No functional change intended.

Reviewed-by: Mark Pearson 
Cc: stable@vger.kernel.org
Reviewed-by: Rong Zhang 
Tested-by: Rong Zhang 
Signed-off-by: Derek J. Clark 
Link: https://patch.msgid.link/20260510042546.436874-6-derekjohn.clark@gmail.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Greg Kroah-Hartman

platform/x86: lenovo-wmi-helpers: Move gamezone enums to wmi-helpers

2026-05-23T11:07:17+00:00

commit 7e27896e16a1c450085c3fe020eeb1b223880f37 upstream.

In a later patch in the series the thermal mode enum will be accessed
across three separate drivers (wmi-capdata, wmi-gamezonem and wmi-other).
An additional patch in the series will also add a function prototype that
needs to reference this enum in wmi-helpers.h. To avoid having all these
drivers begin to import each others headers, and to avoid declaring an
opaque enum to hande the second case, move the thermal mode enum to
helpers where it can be safely accessed by everything that needs it from
a single import.

While at it, since the gamezone_events_type enum is the only remaining
item in the header, move that as well and remove the gamezone header
entirely.

Cc: stable@vger.kernel.org
Reviewed-by: Mark Pearson 
Reviewed-by: Rong Zhang 
Tested-by: Rong Zhang 
Signed-off-by: Derek J. Clark 
Link: https://patch.msgid.link/20260510042546.436874-8-derekjohn.clark@gmail.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Greg Kroah-Hartman

platform/x86: intel: Move debugfs register before creating devices

2026-05-23T11:07:17+00:00

commit ad3bff944c0f4f2e913298a9664391af32f87491 upstream.

It is possible that the driver handling device is enumerated before
registering debugfs. If the driver wants to access debugfs by calling
tpmi_get_debugfs_dir(), this will return error in this case.

Hence register debugfs before creating devices.

Fixes: 811f67c51636 ("platform/x86/intel/tpmi: Add new auxiliary driver for performance limits")
Signed-off-by: Srinivas Pandruvada 
Cc: Stable@vger.kernel.org
Link: https://patch.msgid.link/20260430151103.1549733-2-srinivas.pandruvada@linux.intel.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Greg Kroah-Hartman

platform/x86: dell-wmi-sysman: bound enumeration string aggregation

2026-05-23T11:06:55+00:00

[ Upstream commit 3c34471c26abc52a37f5ad90949e2e4b8027eb14 ]

populate_enum_data() aggregates firmware-provided value-modifier
and possible-value strings into fixed 512-byte struct members.
The current code bounds each individual source string but then
appends every string and separator with raw strcat() and no
remaining-space check.

Switch the aggregation loops to a bounded append helper and
reject enumeration packages whose combined strings do not fit
in the destination buffers.

Fixes: e8a60aa7404b ("platform/x86: Introduce support for Systems Management Driver over WMI for Dell Systems")
Signed-off-by: Pengpeng Hou 
Link: https://patch.msgid.link/20260408084501.1-dell-wmi-sysman-v2-pengpeng@iscas.ac.cn
[ij: add include]
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin

platform/x86: dell_rbu: avoid uninit value usage in packet_size_write()

2026-05-23T11:06:55+00:00

[ Upstream commit f8fd138c2363c0e2d3235c32bfb4fb5c6474e4ae ]

Ensure the temp value has been properly parsed from the user-provided
buffer and initialized to be used in later operations.  While at it,
prefer a convenient kstrtoul() helper.

Found by Linux Verification Center (linuxtesting.org) with Svace static
analysis tool.

Fixes: ad6ce87e5bd4 ("[PATCH] dell_rbu: changes in packet update mechanism")
Signed-off-by: Fedor Pchelkin 
Link: https://patch.msgid.link/20260403134240.604837-1-pchelkin@ispras.ru
[ij: add include]
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin

platform/x86: asus-wmi: fix screenpad brightness range

2026-05-23T11:06:55+00:00

[ Upstream commit 8d95d1f4aa5c76202b0833a70998769384612488 ]

Fix screenpad brightness range being too limited without reason:
testing this patch on a Zenbook Duo showed the hardware minimum not being
too low, therefore allow the user to configure the entire range, and
expose to userspace the hardware brightness range and value.

Fixes: 2c97d3e55b70 ("platform/x86: asus-wmi: add support for ASUS screenpad")
Signed-off-by: Denis Benato 
Signed-off-by: Luke Jones 
Link: https://patch.msgid.link/20260302174431.349816-3-denis.benato@linux.dev
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin

platform/x86: asus-wmi: adjust screenpad power/brightness handling

2026-05-23T11:06:54+00:00

[ Upstream commit 130d29c5627cd50e786e926ad7ef66322c5a0c09 ]

Fix illogical screen off control by hardcoding 0 and 1 depending on the
requested brightness and also do not rely on the last screenpad power
state to issue screen brightness commands.

Fixes: 2c97d3e55b70 ("platform/x86: asus-wmi: add support for ASUS screenpad")
Signed-off-by: Denis Benato 
Signed-off-by: Luke Jones 
Link: https://patch.msgid.link/20260302174431.349816-2-denis.benato@linux.dev
Link: https://patch.msgid.link/20260326231154.856729-2-ethantidmore06@gmail.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin

platform/x86: barco-p50-gpio: normalize return value of gpio_get

2026-05-23T11:06:54+00:00

[ Upstream commit 1c9d30d37aaffe3454d70b89a77f8aaecda257bf ]

The GPIO get callback is expected to return 0 or 1 (or a negative error
code). Ensure that the value returned by p50_gpio_get() is normalized
to the [0, 1] range.

Fixes: 86ef402d805d606a ("gpiolib: sanitize the return value of gpio_chip::get()")
Reviewed-by: Linus Walleij 
Signed-off-by: Dmitry Torokhov 
Reviewed-by: Bartosz Golaszewski 
Link: https://patch.msgid.link/20260318-barco-p50-gpio-set-v2-1-c0a4a6416163@gmail.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin

platform/x86: panasonic-laptop: Fix OPTD notifier registration and cleanup

2026-05-23T11:06:54+00:00

[ Upstream commit 8baeff2c1d33dad8572216c6ad3a7425852507d4 ]

An ACPI notify handler is leaked if device_create_file() returns an
error in acpi_pcc_hotkey_add().

Also, it is pointless to call pcc_unregister_optd_notifier() in
acpi_pcc_hotkey_remove() if pcc->platform is NULL and it is better
to arrange the cleanup code in that function in the same order as
the rollback code in acpi_pcc_hotkey_add().

Address the above by placing the pcc_register_optd_notifier() call in
acpi_pcc_hotkey_add() after the device_create_file() return value
check and placing the pcc_unregister_optd_notifier() call in
acpi_pcc_hotkey_remove() right before the device_remove_file() call.

Fixes: d5a81d8e864b ("platform/x86: panasonic-laptop: Add support for optical driver power in Y and W series")
Signed-off-by: Rafael J. Wysocki 
Link: https://patch.msgid.link/2411055.ElGaqSPkdT@rafael.j.wysocki
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin

platform/surface: surfacepro3_button: Drop wakeup source on remove

2026-05-23T11:06:54+00:00

[ Upstream commit 1410a228ab2d36fe2b383415a632ae12048d4f3a ]

The wakeup source added by device_init_wakeup() in surface_button_add()
needs to be dropped during driver removal, so update the driver to do
that.

Fixes: 19351f340765 ("platform/x86: surfacepro3: Support for wakeup from suspend-to-idle")
Signed-off-by: Rafael J. Wysocki 
Link: https://patch.msgid.link/4368848.1IzOArtZ34@rafael.j.wysocki
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin