diff options
| author | Adam Jackson | 2009-06-04 10:20:34 +1000 |
|---|---|---|
| committer | Dave Airlie | 2009-06-04 10:20:34 +1000 |
| commit | fc43896630a421321a19d7970bac27ac94e9d162 (patch) | |
| tree | 26128411aeb6fb307ce899b3efec3779196b247d | |
| parent | 6c51d1cfa0a370b48a157163340190cf5fd2346b (diff) | |
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>
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index ca9c61656714..6f6b26479d82 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -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; |