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05 April 2024, 19:05:47 UTC
Revision 1ba869ec581fd9078b684c56c399ffe3d2345e27 authored by Michael Spang on 12 March 2009, 21:31:34 UTC, committed by Linus Torvalds on 12 March 2009, 23:20:24 UTC 
acer-wmi: fix regression in backlight detection
 
Currently we disable the Acer WMI backlight device if there is no ACPI
backlight device.  As a result, we end up with no backlight device at all.
 We should instead disable it if there is an ACPI device, as the other
laptop drivers do.  This regression was introduced in febf2d9 ("Acer-WMI:
fingers off backlight if video.ko is serving this functionality").

Each laptop driver with backlight support got a similar change around
febf2d9.  The changes to the other drivers look correct; see e.g.
a598c82f for a similar but correct change.  The regression is also in
2.6.28.

Signed-off-by: Michael Spang <mspang@csclub.uwaterloo.ca>
Acked-by: Thomas Renninger <trenn@suse.de>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Carlos Corbacho <carlos@strangeworlds.co.uk>
Cc: Len Brown <len.brown@intel.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: <stable@kernel.org>		[2.6.28.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 7c48ed3
History
Tip revision: 1ba869ec581fd9078b684c56c399ffe3d2345e27 authored by Michael Spang on 12 March 2009, 21:31:34 UTC
acer-wmi: fix regression in backlight detection
Tip revision: 1ba869e
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