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UPSTREAM: drm/edid: Clear old audio latency values before parsing the new EDID

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Clear out stale audio latency information (potentially from a previous
EDID) before constructing the ELD from the EDID.

Change-Id: I1e770776f031864f597c5cd143c5fc120b313b7d
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1475070703-6435-2-git-send-email-ville.syrjala@linux.intel.com
Signed-off-by: Zheng Yang <zhengyang@rock-chips.com>
(cherry picked from commit 85c9158055)
This commit is contained in:
Ville Syrjälä
2016-09-28 16:51:34 +03:00
committed by Zheng Yang
parent 3beeb3ae34
commit 7dc29946bd
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/drm_edid.c
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@@ -3698,6 +3698,13 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
memset(eld, 0, sizeof(connector->eld));
connector->latency_present[0] = false;
connector->latency_present[1] = false;
connector->video_latency[0] = 0;
connector->audio_latency[0] = 0;
connector->video_latency[1] = 0;
connector->audio_latency[1] = 0;
cea = drm_find_cea_extension(edid);
if (!cea) {
DRM_DEBUG_KMS("ELD: no CEA Extension found\n");