linux-kernel - [PATCH 59/72] udl: handle EDID failure properly.

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Message-Id: <1366276617-3553-60-git-send-email-luis.henriques@canonical.com>
Date:	Thu, 18 Apr 2013 10:16:44 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Dave Airlie <airlied@...hat.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 59/72] udl: handle EDID failure properly.

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

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

From: Dave Airlie <airlied@...il.com>

commit 1baee58638fc58248625255f5c5fcdb987f11b1f upstream.

Don't oops seems proper.

Signed-off-by: Dave Airlie <airlied@...hat.com>
[ luis: adjust context ]
Signed-off-by: Luis Henriques <luis.henriques@...onical.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 3234224..b8e6463 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;
+	}
 
 	connector->display_info.raw_edid = (char *)edid;
 
-- 
1.8.1.2

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