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drm/edid: fix reduced blanking support check
author
Jani Nikula
<jani.nikula@intel.com>
Mon, 28 Mar 2022 14:34:23 +0000
(17:34 +0300)
committer
Jani Nikula
<jani.nikula@intel.com>
Tue, 29 Mar 2022 11:51:29 +0000
(14:51 +0300)
The reduced blanking bit is valid only for CVT, indicated by display
range limits flags 0x04.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Link:
https://patchwork.freedesktop.org/patch/msgid/5dea5ee24065450716bbc177dd6850d3193dbeec.1648477901.git.jani.nikula@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
0e434ab
..
aa4ba35
100644
(file)
--- a/
drivers/gpu/drm/drm_edid.c
+++ b/
drivers/gpu/drm/drm_edid.c
@@
-2408,7
+2408,7
@@
is_rb(struct detailed_timing *t, void *data)
if (!is_display_descriptor(r, EDID_DETAIL_MONITOR_RANGE))
return;
- if (r[15] & 0x10)
+ if (r[1
0] == DRM_EDID_CVT_SUPPORT_FLAG && r[1
5] & 0x10)
*(bool *)data = true;
}