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Commit fc438966 authored by Adam Jackson's avatar Adam Jackson Committed by Dave Airlie
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drm: ignore EDID with really tiny modes. 



Some EDIDs lie and report tiny modes that aren't possible. Ignore
these modes.

Signed-off-by: default avatarAdam Jackson <ajax@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 6c51d1cf

drivers/gpu/drm/drm_edid.c

+5 −0
Original line number Diff line number Diff line
@@ -289,6 +289,11 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev, 
	struct drm_display_mode *mode;

	struct detailed_pixel_timing *pt = &timing->data.pixel_data;



	/* ignore tiny modes */

	if (((pt->hactive_hi << 8) | pt->hactive_lo) < 64 ||

	    ((pt->vactive_hi << 8) | pt->hactive_lo) < 64)

		return NULL;



	if (pt->stereo) {

		printk(KERN_WARNING "stereo mode not supported\n");

		return NULL;