diff options
| author | Zhang Rui <rui.zhang@intel.com> | 2009-07-13 10:33:24 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-12-30 01:46:12 -0500 |
| commit | 28c32e99bdf5ab838e7179c1aaca5a35a07f2a2b (patch) | |
| tree | 78936dee92f247f8e351aad4618b793c91bd3d3a /drivers/acpi | |
| parent | 6b7b284958d47b77d06745b36bc7f36dab769d9b (diff) | |
ACPI video: no warning message if "acpi_backlight=vendor" is used
AML code always sends notifications to ACPI video device,
even if we disable the ACPI backlight control by using
boot option "acpi_backlight=vendor".
In this case we should not print any warning message.
http://bugzilla.kernel.org/show_bug.cgi?id=13671#c14
Sigend-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/video.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 05dff631591c..3b063a6ac52e 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -1979,6 +1979,10 @@ acpi_video_switch_brightness(struct acpi_video_device *device, int event) unsigned long long level_current, level_next; int result = -EINVAL; + /* no warning message if acpi_backlight=vendor is used */ + if (!acpi_video_backlight_support()) + return 0; + if (!device->brightness) goto out; |