[PATCH v3 02/12] drm/edid: fix reduced blanking support check

[Jani Nikula <jani.nikula@xxxxxxxxx>]

The reduced blanking bit is valid only for CVT, indicated by display
range limits flags 0x04.

Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
 drivers/gpu/drm/drm_edid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 1b552fe54f38..13d05062d68c 100644
--- 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[10] == DRM_EDID_CVT_SUPPORT_FLAG && r[15] & 0x10)
 		*(bool *)data = true;
 }
 
-- 
2.30.2