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drm/edid: Clear old dvi_dual/max_tmds_clock before parsing the new EDID

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Clear out old max_tmds_clock and dvi_dual information (possibly from a
previous EDID) before parsing the current EDID. Tne current EDID might
not even have these in its HDMI VSDB, which would mean that we'd leave
the old stale values in place.

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/1475070703-6435-3-git-send-email-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2016-09-28 16:51:35 +03:00 committed by Daniel Vetter
parent 85c9158055
commit 75d7e542bd
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/drm_edid.c
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@ -3365,6 +3365,9 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
connector->video_latency[1] = 0;
connector->audio_latency[1] = 0;
connector->max_tmds_clock = 0;
connector->dvi_dual = false;
cea = drm_find_cea_extension(edid);
if (!cea) {
DRM_DEBUG_KMS("ELD: no CEA Extension found\n");