linux-stable.git/drivers/acpi, branch v6.14

ACPI: platform_profile: Add support for hidden choices

2025-03-04T19:45:34+00:00

When two drivers don't support all the same profiles the legacy interface
only exports the common profiles.

This causes problems for cases where one driver uses low-power but another
uses quiet because the result is that neither is exported to sysfs.

To allow two drivers to disagree, add support for "hidden choices".
Hidden choices are platform profiles that a driver supports to be
compatible with the platform profile of another driver.

Fixes: 688834743d67 ("ACPI: platform_profile: Allow multiple handlers")
Reported-by: Antheas Kapenekakis 
Closes: https://lore.kernel.org/platform-driver-x86/e64b771e-3255-42ad-9257-5b8fc6c24ac9@gmx.de/T/#mc068042dd29df36c16c8af92664860fc4763974b
Signed-off-by: Mario Limonciello 
Tested-by: Antheas Kapenekakis 
Tested-by: Derek J. Clark 
Acked-by: Ilpo Järvinen 
Link: https://patch.msgid.link/20250228170155.2623386-2-superm1@kernel.org
Signed-off-by: Rafael J. Wysocki

ACPI: platform_profile: Fix memory leak in profile_class_is_visible()

2025-02-18T19:03:37+00:00

If class_find_device() finds a device, it's reference count is
incremented.

Call put_device() to drop this reference before returning.

Fixes: 77be5cacb2c2 ("ACPI: platform_profile: Create class for ACPI platform profile")
Signed-off-by: Kurt Borja 
Reviewed-by: Mark Pearson 
Link: https://patch.msgid.link/20250212193058.32110-1-kuurtb@gmail.com
Signed-off-by: Rafael J. Wysocki

Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

2025-02-14T17:55:17+00:00

Pull arm64 fixes from Will Deacon:

 - Fix kexec and hibernation when using 5-level page-table configuration

 - Remove references to non-existent SF8MM4 and SF8MM8 ID register
   fields, hooking up hwcaps for the FPRCVT, F8MM4 and F8MM8 fields
   instead

 - Drop unused .ARM.attributes ELF sections

 - Fix array indexing when probing CPU cache topology from firmware

 - Fix potential use-after-free in AMU initialisation code

 - Work around broken GTDT entries by tolerating excessively large timer
   arrays

 - Force use of Rust's "softfloat" target to avoid a threatening warning
   about the NEON target feature

 - Typo fix in GCS documentation and removal of duplicate Kconfig select

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: rust: clean Rust 1.85.0 warning using softfloat target
  arm64: Add missing registrations of hwcaps
  ACPI: GTDT: Relax sanity checking on Platform Timers array count
  arm64: amu: Delay allocating cpumask for AMU FIE support
  arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array
  arm64: Handle .ARM.attributes section in linker scripts
  arm64/hwcap: Remove stray references to SF8MMx
  arm64/gcs: Fix documentation for HWCAP
  arm64: Kconfig: Remove selecting replaced HAVE_FUNCTION_GRAPH_RETVAL
  arm64: Fix 5-level paging support in kexec/hibernate trampoline

ACPI: GTDT: Relax sanity checking on Platform Timers array count

2025-02-13T11:12:47+00:00

Perhaps unsurprisingly there are some platforms where the GTDT isn't
quite right and the Platforms Timer array overflows the length of the
overall table.

While the recently-added sanity checking isn't wrong, it makes it
impossible to boot the kernel on offending platforms. Try to hobble
along and limit the Platform Timer count to the bounds of the table.

Cc: Marc Zyngier 
Cc: Lorenzo Pieralisi 
Cc: Zheng Zengkai 
Cc: stable@vger.kernel.org
Fixes: 263e22d6bd1f ("ACPI: GTDT: Tighten the check for the array of platform timer structures")
Signed-off-by: Oliver Upton 
Acked-by: Marc Zyngier 
Reviewed-by: Lorenzo Pieralisi 
Link: https://lore.kernel.org/r/20250128001749.3132656-1-oliver.upton@linux.dev
Signed-off-by: Will Deacon

Merge branches 'acpi-property' and 'acpi-resource'

2025-02-07T12:06:31+00:00

Merge a new ACPI IRQ override quirk for Eluktronics MECH-17 (Gannon
Kolding) and an acpi_data_prop_read() fix making it reflect the OF
counterpart behavior in error cases (Andy Shevchenko).

* acpi-property:
  ACPI: property: Fix return value for nval == 0 in acpi_data_prop_read()

* acpi-resource:
  ACPI: resource: IRQ override for Eluktronics MECH-17

ACPI: PRM: Remove unnecessary strict handler address checks

2025-02-05T20:16:40+00:00

Commit 088984c8d54c ("ACPI: PRM: Find EFI_MEMORY_RUNTIME block for PRM
handler and context") added unnecessary strict handler address checks,
causing the PRM module to fail in translating memory error addresses.

Both static data buffer address and ACPI parameter buffer address may
be NULL if they are not needed, as described in section 4.1.2 PRM Handler
Information Structure of Platform Runtime Mechanism specification [1].

Here are two examples from real hardware:

----PRMT.dsl----

- staic data address is not used
[10Ch 0268   2]                     Revision : 0000
[10Eh 0270   2]                       Length : 002C
[110h 0272  16]                 Handler GUID : F6A58D47-E04F-4F5A-86B8-2A50D4AA109B
[120h 0288   8]              Handler address : 0000000065CE51F4
[128h 0296   8]           Satic Data Address : 0000000000000000
[130h 0304   8]       ACPI Parameter Address : 000000006522A718

- ACPI parameter address is not used
[1B0h 0432   2]                     Revision : 0000
[1B2h 0434   2]                       Length : 002C
[1B4h 0436  16]                 Handler GUID : 657E8AE6-A8FC-4877-BB28-42E7DE1899A5
[1C4h 0452   8]              Handler address : 0000000065C567C8
[1CCh 0460   8]           Satic Data Address : 000000006113FB98
[1D4h 0468   8]       ACPI Parameter Address : 0000000000000000

Fixes: 088984c8d54c ("ACPI: PRM: Find EFI_MEMORY_RUNTIME block for PRM handler and context")
Reported-and-tested-by: Shi Liu 
Cc: All applicable 
Signed-off-by: Aubrey Li 
Link: https://uefi.org/sites/default/files/resources/Platform%20Runtime%20Mechanism%20-%20with%20legal%20notice.pdf # [1]
Reviewed-by: Koba Ko 
Acked-by: Ard Biesheuvel 
Link: https://patch.msgid.link/20250126022250.3014210-1-aubrey.li@linux.intel.com
[ rjw: Minor changelog edits ]
Signed-off-by: Rafael J. Wysocki

ACPI: resource: IRQ override for Eluktronics MECH-17

2025-02-05T20:12:46+00:00

The Eluktronics MECH-17 (GM7RG7N) needs IRQ overriding for the
keyboard to work.

Adding a DMI_MATCH entry for this laptop model makes the internal
keyboard function normally.

Signed-off-by: Gannon Kolding 
Link: https://patch.msgid.link/20250127093902.328361-1-gannon.kolding@gmail.com
Signed-off-by: Rafael J. Wysocki

ACPI: property: Fix return value for nval == 0 in acpi_data_prop_read()

2025-02-05T20:09:28+00:00

While analysing code for software and OF node for the corner case when
caller asks to read zero items in the supposed to be an array of values
I found that ACPI behaves differently to what OF does, i.e.

 1. It returns -EINVAL when caller asks to read zero items from integer
    array, while OF returns 0, if no other errors happened.

 2. It returns -EINVAL when caller asks to read zero items from string
    array, while OF returns -ENODATA, if no other errors happened.

Amend ACPI implementation to follow what OF does.

Fixes: b31384fa5de3 ("Driver core: Unified device properties interface for platform firmware")
Signed-off-by: Andy Shevchenko 
Link: https://patch.msgid.link/20250203194629.3731895-1-andriy.shevchenko@linux.intel.com
[ rjw: Added empty line after a conditional ]
Signed-off-by: Rafael J. Wysocki

Merge tag 'mm-hotfixes-stable-2025-02-01-03-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-02-01T17:49:20+00:00

Pull misc fixes from Andrew Morton:
 "21 hotfixes. 8 are cc:stable and the remainder address post-6.13
  issues. 13 are for MM and 8 are for non-MM.

  All are singletons, please see the changelogs for details"

* tag 'mm-hotfixes-stable-2025-02-01-03-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (21 commits)
  MAINTAINERS: include linux-mm for xarray maintenance
  revert "xarray: port tests to kunit"
  MAINTAINERS: add lib/test_xarray.c
  mailmap, MAINTAINERS, docs: update Carlos's email address
  mm/hugetlb: fix hugepage allocation for interleaved memory nodes
  mm: gup: fix infinite loop within __get_longterm_locked
  mm, swap: fix reclaim offset calculation error during allocation
  .mailmap: update email address for Christopher Obbard
  kfence: skip __GFP_THISNODE allocations on NUMA systems
  nilfs2: fix possible int overflows in nilfs_fiemap()
  mm: compaction: use the proper flag to determine watermarks
  kernel: be more careful about dup_mmap() failures and uprobe registering
  mm/fake-numa: handle cases with no SRAT info
  mm: kmemleak: fix upper boundary check for physical address objects
  mailmap: add an entry for Hamza Mahfooz
  MAINTAINERS: mailmap: update Yosry Ahmed's email address
  scripts/gdb: fix aarch64 userspace detection in get_current_task
  mm/vmscan: accumulate nr_demoted for accurate demotion statistics
  ocfs2: fix incorrect CPU endianness conversion causing mount failure
  mm/zsmalloc: add __maybe_unused attribute for is_first_zpdesc()
  ...

mm/fake-numa: handle cases with no SRAT info

2025-02-01T11:53:25+00:00

Handle more gracefully cases where no SRAT information is available, like
in VMs with no Numa support, and allow fake-numa configuration to complete
successfully in these cases

Link: https://lkml.kernel.org/r/20250127171623.1523171-1-bfaccini@nvidia.com
Fixes: 63db8170bf34 (“mm/fake-numa: allow later numa node hotplug”)
Signed-off-by: Bruno Faccini 
Cc: David Hildenbrand 
Cc: Hyeonggon Yoo 
Cc: John Hubbard 
Cc: Len Brown 
Cc: "Mike Rapoport (IBM)" 
Cc: "Rafael J. Wysocki" 
Cc: Zi Yan 
Signed-off-by: Andrew Morton