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drm/edid: Clear the old cea_rev when there's no CEA extension in the new EDID
author
Ville Syrjälä
<ville.syrjala@linux.intel.com>
Wed, 28 Sep 2016 13:51:40 +0000
(16:51 +0300)
committer
Daniel Vetter
<daniel.vetter@ffwll.ch>
Tue, 4 Oct 2016 06:23:12 +0000
(08:23 +0200)
It's not a good idea to leave stale cea_rev in the drm_display_info. The
current EDID might not even have a CEA ext block in which case we'd end
up leaving the stale value 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/1475070703-6435-8-git-send-email-ville.syrjala@linux.intel.com
drivers/gpu/drm/drm_edid.c
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diff --git
a/drivers/gpu/drm/drm_edid.c
b/drivers/gpu/drm/drm_edid.c
index
ef8ae69
..
48e529d
100644
(file)
--- a/
drivers/gpu/drm/drm_edid.c
+++ b/
drivers/gpu/drm/drm_edid.c
@@
-3844,6
+3844,7
@@
static void drm_add_display_info(struct drm_connector *connector,
/* driver figures it out in this case */
info->bpc = 0;
info->color_formats = 0;
+ info->cea_rev = 0;
if (edid->revision < 3)
return;