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authorJesse Barnes <jbarnes@virtuousgeek.org>2009-11-05 10:12:54 -0800
committerDave Airlie <airlied@redhat.com>2009-11-24 13:01:53 +1000
commit7064fef56369c9e2c6e35ff6d6b4b63d42a859ce (patch)
treef6efdc60afc3f74a4727089cf2fd7bac55d196da
parent0ebf17174b4bdd99ab81c476714c91ee335fdcbf (diff)
drm: work around EDIDs with bad htotal/vtotal values
We did this on the userspace side, but we need a similar fix for the kernel. Fixes LP #460664. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
-rw-r--r--drivers/gpu/drm/drm_edid.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index cea665d86dd..b54ba63d506 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -662,6 +662,12 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
return NULL;
}
+ /* Some EDIDs have bogus h/vtotal values */
+ if (mode->hsync_end > mode->htotal)
+ mode->htotal = mode->hsync_end + 1;
+ if (mode->vsync_end > mode->vtotal)
+ mode->vtotal = mode->vsync_end + 1;
+
drm_mode_set_name(mode);
if (pt->misc & DRM_EDID_PT_INTERLACED)