[ 22/27] udl: handle EDID failure properly.

From: Greg Kroah-Hartman
Date: Sun Apr 14 2013 - 22:45:49 EST


3.8-stable review patch. If anyone has any objections, please let me know.

------------------

From: Dave Airlie <airlied@xxxxxxxxx>

commit 1baee58638fc58248625255f5c5fcdb987f11b1f upstream.

Don't oops seems proper.

Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/gpu/drm/udl/udl_connector.c | 4 ++++
1 file changed, 4 insertions(+)

--- a/drivers/gpu/drm/udl/udl_connector.c
+++ b/drivers/gpu/drm/udl/udl_connector.c
@@ -61,6 +61,10 @@ static int udl_get_modes(struct drm_conn
int ret;

edid = (struct edid *)udl_get_edid(udl);
+ if (!edid) {
+ drm_mode_connector_update_edid_property(connector, NULL);
+ return 0;
+ }

/*
* We only read the main block, but if the monitor reports extension


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