]> Gentwo Git Trees - linux/.git/commit
ACPI: OSI: Stop advertising support for "3.0 _SCP Extensions"
authorArmin Wolf <W_Armin@gmx.de>
Thu, 10 Apr 2025 16:54:54 +0000 (18:54 +0200)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Fri, 16 May 2025 13:53:26 +0000 (15:53 +0200)
commit8cf4fdac9bdead7bca15fc56fdecdf78d11c3ec6
treed2d541a0621818994fefc4916807ac1805882ef6
parent82f2b0b97b36ee3fcddf0f0780a9a0825d52fec3
ACPI: OSI: Stop advertising support for "3.0 _SCP Extensions"

As specified in section 5.7.2 of the ACPI specification the feature
group string "3.0 _SCP Extensions" implies that the operating system
evaluates the _SCP control method with additional parameters.

However the ACPI thermal driver evaluates the _SCP control method
without those additional parameters, conflicting with the above
feature group string advertised to the firmware thru _OSI.

Stop advertising support for this feature string to avoid confusing
the ACPI firmware.

Fixes: e5f660ebef68 ("ACPI / osi: Collect _OSI handling into one single file")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20250410165456.4173-2-W_Armin@gmx.de
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/acpi/osi.c