ACPI: do not warn if _BQC does not exist

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Starting from ACPI spec 3.0, it's only clarified that _BCM control
method is required if _BCL is implemented. There is no word
saying _BQC is required.

And in ACPI spec 6.1 B.5.4, for _BQC, it is explicitly stated that
"This optional method returns the current brightness level of a
built-in display output device. If present, it must be set by
the platform for initial brightness."

Thus remove the obsolete warning message.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Zhang Rui 2016-11-29 23:19:46 +01:00 • committed by Rafael J. Wysocki

parent e5517c2a5a

commit 7020bcb828

1 changed files with 0 additions and 3 deletions

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drivers/acpi/scan.c

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