releases/3.8.8/udl-handle-edid-failure-properly.patch

   1 From 1baee58638fc58248625255f5c5fcdb987f11b1f Mon Sep 17 00:00:00 2001
   2 From: Dave Airlie <airlied@gmail.com>
   3 Date: Fri, 12 Apr 2013 13:25:20 +1000
   4 Subject: udl: handle EDID failure properly.
   5
   6 From: Dave Airlie <airlied@gmail.com>
   7
   8 commit 1baee58638fc58248625255f5c5fcdb987f11b1f upstream.
   9
  10 Don't oops seems proper.
  11
  12 Signed-off-by: Dave Airlie <airlied@redhat.com>
  13 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  14
  15 ---
  16  drivers/gpu/drm/udl/udl_connector.c |    4 ++++
  17  1 file changed, 4 insertions(+)
  18
  19 --- a/drivers/gpu/drm/udl/udl_connector.c
  20 +++ b/drivers/gpu/drm/udl/udl_connector.c
  21 @@ -61,6 +61,10 @@ static int udl_get_modes(struct drm_conn
  22         int ret;
  23
  24         edid = (struct edid *)udl_get_edid(udl);
  25 +       if (!edid) {
  26 +               drm_mode_connector_update_edid_property(connector, NULL);
  27 +               return 0;
  28 +       }
  29
  30         /*
  31          * We only read the main block, but if the monitor reports extension