linux/drivers/acpi/nfit
Rafael J. Wysocki e4865a56d0 ACPI: driver: Check ACPI_COMPANION() against NULL during probe
Since every platform driver can be forced to match a device that doesn't
match its list of device IDs because of device_match_driver_override(),
platform drivers that rely on the existence of a device's ACPI companion
object should verify its presence.

Accordingly, add requisite ACPI_COMPANION() or ACPI_HANDLE() checks
against NULL to 13 platform drivers handling core ACPI devices.

Also change the value returned by the ACPI thermal zone driver when
the device's ACPI companion is not present to -ENODEV for consistency
with the other drivers.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/4516068.ejJDZkT8p0@rafael.j.wysocki
Cc: 7.0+ <stable@vger.kernel.org> # 7.0+
History 2026-05-11 18:50:06 +02:00
..
core.c ACPI: driver: Check ACPI_COMPANION() against NULL during probe 2026-05-11 18:50:06 +02:00
intel.c acpi: nfit: intel: avoid multiple -Wflex-array-member-not-at-end warnings 2025-06-27 13:27:23 -07:00
intel.h ACPI: NFIT: Add runtime firmware activate support 2020-07-28 19:29:22 -06:00
Kconfig acpi/nfit: Add support for Intel DSM 1.8 commands 2018-12-04 10:31:11 -08:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mce.c acpi/nfit: rely on mce->misc to determine poison granularity 2022-05-16 11:46:44 -07:00
nfit.h ACPI: NFIT: Add declaration in a local header 2023-06-05 19:06:20 +02:00