[PATCH 2/3] drm: reset ELD if NULL edid is passed to drm_edid_to_eld

[Ville Syrjälä]

On Thu, Feb 16, 2017 at 12:36:43PM +0200, Jani Nikula wrote:
> Make the function useful for resetting, not just setting, the ELD.
> 
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>
> ---
>  drivers/gpu/drm/drm_edid.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 24e7b282f16c..362036360724 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -3430,6 +3430,9 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
>  
>  	memset(eld, 0, sizeof(connector->eld));
>  
> +	if (!edid)
> +		return;
> +
>  	connector->latency_present[0] = false;
>  	connector->latency_present[1] = false;
>  	connector->video_latency[0] = 0;

/me thinks the check should be after all these.

Hmm. Actually the cea ext block check below should be safe wrt.
edid==NULL, so not sure we need this at all.

-- 
Ville Syrjälä
Intel OTC