linux-stable.git/drivers/platform/x86/intel, branch linux-5.15.y

platform/x86: intel-hid: Enable 5-button array on ThinkPad X1 Fold 16 Gen 1

2026-04-18T08:33:23+00:00

[ Upstream commit b38d478dad79e61e8a65931021bdfd7a71741212 ]

The Lenovo ThinkPad X1 Fold 16 Gen 1 has physical volume up/down
buttons that are handled through the intel-hid 5-button array
interface. The firmware does not advertise 5-button array support via
HEBC, so the driver relies on a DMI allowlist to enable it.

Add the ThinkPad X1 Fold 16 Gen 1 to the button_array_table so the
volume buttons work out of the box.

Signed-off-by: Leif Skunberg 
Reviewed-by: Hans de Goede 
Link: https://patch.msgid.link/20260210085625.34380-1-diamondback@cohunt.app
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin

platform/x86: intel-hid: Add Dell 14 Plus 2-in-1 to dmi_vgbs_allow_list

2026-04-18T08:33:23+00:00

[ Upstream commit 6b3fa0615cd8432148581de62a52f83847af3d70 ]

The Dell 14 Plus 2-in-1 (model DB04250) requires the VGBS allow list
entry to correctly enable the tablet mode switch. Without this, the
chassis state is not reported, and the hinge rotation only emits
unknown scancodes.

Verified on Dell 14 Plus 2-in-1 DB04250.

Closes: https://bugzilla.kernel.org/show_bug.cgi?id=221090
Signed-off-by: Peter Metz 
Reviewed-by: Hans de Goede 
Link: https://patch.msgid.link/20260213044627.203638-1-peter.metz@unarin.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin

platform/x86: intel_telemetry: Fix PSS event register mask

2026-02-11T12:35:31+00:00

[ Upstream commit 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 
Link: https://patch.msgid.link/20251224061144.3925519-1-kaushlendra.kumar@intel.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin

platform/x86: intel_telemetry: Fix swapped arrays in PSS output

2026-02-11T12:35:26+00:00

commit 25e9e322d2ab5c03602eff4fbf4f7c40019d8de2 upstream.

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 
Link: https://patch.msgid.link/20251224032053.3915900-1-kaushlendra.kumar@intel.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Greg Kroah-Hartman

platform/x86/intel/hid: Add Dell Pro Rugged 10/12 tablet to VGBS DMI quirks

2026-01-19T12:09:48+00:00

[ Upstream commit b169e1733cadb614e87f69d7a5ae1b186c50d313 ]

Dell Pro Rugged 10/12 tablets has a reliable VGBS method.
If VGBS is not called on boot, the on-screen keyboard won't appear if the
device is booted without a keyboard.

Call VGBS on boot on thess devices to get the initial state of
SW_TABLET_MODE in a reliable way.

Signed-off-by: Chia-Lin Kao (AceLan) 
Reviewed-by: Hans de Goede 
Link: https://patch.msgid.link/20251127070407.656463-1-acelan.kao@canonical.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Sasha Levin

platform/x86: intel: punit_ipc: fix memory corruption

2025-12-06T21:09:33+00:00

[ Upstream commit 9b9c0adbc3f8a524d291baccc9d0c04097fb4869 ]

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 
Signed-off-by: Sasha Levin

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

2025-12-06T21:09:31+00:00

[ Upstream commit d8bb447efc5622577994287dc77c684fa8840b30 ]

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 
Signed-off-by: Sasha Levin

platform/x86: int3472: Check for adev == NULL

2025-10-19T14:21:28+00:00

commit cd2fd6eab480dfc247b737cf7a3d6b009c4d0f1c upstream.

Not all devices have an ACPI companion fwnode, so adev might be NULL. This
can e.g. (theoretically) happen when a user manually binds one of
the int3472 drivers to another i2c/platform device through sysfs.

Add a check for adev not being set and return -ENODEV in that case to
avoid a possible NULL pointer deref in skl_int3472_get_acpi_buffer().

Signed-off-by: Hans de Goede 
Link: https://lore.kernel.org/r/20241209220522.25288-1-hdegoede@redhat.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
[iwamatsu: adjusted context]
Signed-off-by: Nobuhiro Iwamatsu (CIP) 
Signed-off-by: Greg Kroah-Hartman

platform/x86: ISST: Correct command storage data length

2025-04-10T12:32:05+00:00

commit 9462e74c5c983cce34019bfb27f734552bebe59f upstream.

After resume/online turbo limit ratio (TRL) is restored partially if
the admin explicitly changed TRL from user space.

A hash table is used to store SST mail box and MSR settings when modified
to restore those settings after resume or online. This uses a struct
isst_cmd field "data" to store these settings. This is a 64 bit field.
But isst_store_new_cmd() is only assigning as u32. This results in
truncation of 32 bits.

Change the argument to u64 from u32.

Fixes: f607874f35cb ("platform/x86: ISST: Restore state on resume")
Signed-off-by: Srinivas Pandruvada 
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250328224749.2691272-1-srinivas.pandruvada@linux.intel.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen 
Signed-off-by: Greg Kroah-Hartman

mfd: intel_soc_pmic_bxtwc: Use IRQ domain for TMU device

2024-12-14T18:51:01+00:00

[ Upstream commit 9b79d59e6b2b515eb9a22bc469ef7b8f0904fc73 ]

While design wise the idea of converting the driver to use
the hierarchy of the IRQ chips is correct, the implementation
has (inherited) flaws. This was unveiled when platform_get_irq()
had started WARN() on IRQ 0 that is supposed to be a Linux
IRQ number (also known as vIRQ).

Rework the driver to respect IRQ domain when creating each MFD
device separately, as the domain is not the same for all of them.

Fixes: 957ae5098185 ("platform/x86: Add Whiskey Cove PMIC TMU support")
Fixes: 57129044f504 ("mfd: intel_soc_pmic_bxtwc: Use chained IRQs for second level IRQ chips")
Reported-by: Zhang Ning 
Closes: https://lore.kernel.org/r/TY2PR01MB3322FEDCDC048B7D3794F922CDBA2@TY2PR01MB3322.jpnprd01.prod.outlook.com
Tested-by: Zhang Ning 
Acked-by: Hans de Goede 
Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20241005193029.1929139-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Lee Jones 
Signed-off-by: Sasha Levin