From: Armin Wolf Date: Thu, 10 Apr 2025 16:54:54 +0000 (+0200) Subject: ACPI: OSI: Stop advertising support for "3.0 _SCP Extensions" X-Git-Tag: v5.10.239~329 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=461a495af0d3ce713b0cf30ed9540ce1e0c04b50;p=thirdparty%2Fkernel%2Fstable.git 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 Link: https://patch.msgid.link/20250410165456.4173-2-W_Armin@gmx.de Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- diff --git a/drivers/acpi/osi.c b/drivers/acpi/osi.c index 9f68538091384..d93409f2b2a07 100644 --- a/drivers/acpi/osi.c +++ b/drivers/acpi/osi.c @@ -42,7 +42,6 @@ static struct acpi_osi_entry osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = { {"Module Device", true}, {"Processor Device", true}, - {"3.0 _SCP Extensions", true}, {"Processor Aggregator Device", true}, /* * Linux-Dell-Video is used by BIOS to disable RTD3 for NVidia graphics