From 82069552555cf951d9ade5c1aec61dd40b0765b5 Mon Sep 17 00:00:00 2001 From: Zhang Rui Date: Mon, 6 Dec 2010 15:04:24 +0800 Subject: [PATCH] ACPI video: check cap._DDC flag before getting EDID 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 Signed-off-by: Len Brown --- drivers/acpi/video.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 81766ebec843..177b4ddc3479 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: -- 2.45.2