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authorStefan Bader <stefan.bader@canonical.com>2009-08-21 13:03:05 +0400
committerLen Brown <len.brown@intel.com>2009-10-13 10:50:38 +0400
commit3a1151e3f124fd1a2c54b8153f510f1a7c715369 (patch)
tree26c7155074db312ecd103f2d0ca3bdc450586539 /drivers/acpi/video_detect.c
parent161291396e76e0832c08f617eb9bd364d1648148 (diff)
downloadlinux-3a1151e3f124fd1a2c54b8153f510f1a7c715369.tar.xz
ACPI: video: Loosen strictness of video bus detection code
BugLink: http://bugs.launchpad.net/bugs/333386 Currently a video bus device must (beside other criteria) define _DOD and _DOS methods to be considered a video device. Some broken BIOSes prevented working backlight control by only defining both for one (non-existing bus) and only _DOD for the rest. With this patch in place the other bus definitions were considered too and backlight control started to work again. Signed-off-by: Stefan Bader <stefan.bader@canonical.com> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/video_detect.c')
-rw-r--r--drivers/acpi/video_detect.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 7032f25da9b5..575593a8b4e6 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -84,7 +84,7 @@ long acpi_is_video_device(struct acpi_device *device)
return 0;
/* Does this device able to support video switching ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) &&
+ if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) ||
ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy)))
video_caps |= ACPI_VIDEO_OUTPUT_SWITCHING;