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ACPI video: check cap._DDC flag before getting EDID

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cap._DDC is defined but never used.
Check this flag now and don't try to get EDID for video output devices with this flag cleared.

Signed-off-by: Zhang Rui <[email protected]>
Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
Zhang Rui 2010-12-06 15:04:24 +08:00 • committed by Len Brown
commit 8206955255
1 changed files with 3 additions and 0 deletions
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3
drivers/acpi/video.c
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@ -1275,6 +1275,9 @@ int acpi_video_get_edid(struct acpi_device *device, int type, int device_id,
if (!video_device)
continue;
if (!video_device->cap._DDC)
continue;
if (type) {
switch (type) {
case ACPI_VIDEO_DISPLAY_CRT: