From: Zhang Rui <rui.zhang@xxxxxxxxx>
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 <rui.zhang@xxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
---
drivers/acpi/video.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 81766eb..177b4dd 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -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:
--
1.7.4.rc1.7.g2cf08
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