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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: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
hifive-unleashed-5.1
Adam Jackson 2009-06-04 10:20:34 +10:00 committed by Dave Airlie
parent 6c51d1cfa0
commit fc43896630
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/drm_edid.c
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@ -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;