From 1baee58638fc58248625255f5c5fcdb987f11b1f Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@gmail.com>
Date: Fri, 12 Apr 2013 13:25:20 +1000
Subject: [PATCH] udl: handle EDID failure properly.
Don't oops seems proper.
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
drivers/gpu/drm/udl/udl_connector.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/udl/udl_connector.c b/drivers/gpu/drm/udl/udl_connector.c
index fe5cdbcf26360..b44d548c56f8e 100644
--- 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_connector *connector)
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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