]> git.ipfire.org Git - thirdparty/kernel/stable.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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 27 Jun 2025 10:05:10 +0000 (11:05 +0100)
commitcfc61c34077ef33e686b059ba9d6efa5694d42c3
treeb13c14949ee1c6ed67f1027e4bf04e8f8fec7504
parent92322500c1aa1b55d3e2ecaffef344977bdc2fcc
ACPI: OSI: Stop advertising support for "3.0 _SCP Extensions"

[ Upstream commit 8cf4fdac9bdead7bca15fc56fdecdf78d11c3ec6 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/acpi/osi.c