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ACPI: OSI: Stop advertising support for "3.0 _SCP Extensions"

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[ 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: e5f660ebef ("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>
This commit is contained in:
Armin Wolf
2025-04-10 18:54:54 +02:00
committed by Greg Kroah-Hartman
parent fca08cfadd
commit 5174ac310a
1 changed files with 0 additions and 1 deletions
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drivers/acpi/osi.c
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@@ -42,7 +42,6 @@ static struct acpi_osi_entry
osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = { osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = {
{"Module Device", true}, {"Module Device", true},
{"Processor Device", true}, {"Processor Device", true},
{"3.0 _SCP Extensions", true},
{"Processor Aggregator Device", true}, {"Processor Aggregator Device", true},
}; };