[PATCH] udl: handle EDID failure properly.

[Alex Deucher]

On Thu, Apr 11, 2013 at 11:25 PM, Dave Airlie <airlied at gmail.com> wrote:
> Don't oops seems proper.
>
> Cc: stable at vger.kernel.org
> Signed-off-by: Dave Airlie <airlied at redhat.com>

Reviewed-by: Alex Deucher <alexander.deucher at amd.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 fe5cdbc..b44d548 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
> --
> 1.8.2
>
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