diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 3b18a6e501df0791eb215f9c9dce5edb1b0212e1..8d737322145ca7a3d9cf9fb1269cd32aefcf638b 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -5447,26 +5447,31 @@ static void drm_parse_cea_ext(struct drm_connector *connector,
 			      const struct edid *edid)
 {
 	struct drm_display_info *info = &connector->display_info;
+	struct drm_edid_iter edid_iter;
 	const struct cea_db *db;
 	struct cea_db_iter iter;
 	const u8 *edid_ext;
 
-	edid_ext = drm_find_cea_extension(edid);
-	if (!edid_ext)
-		return;
+	drm_edid_iter_begin(edid, &edid_iter);
+	drm_edid_iter_for_each(edid_ext, &edid_iter) {
+		if (edid_ext[0] != CEA_EXT)
+			continue;
 
-	info->cea_rev = edid_ext[1];
+		if (!info->cea_rev)
+			info->cea_rev = edid_ext[1];
 
-	/* The existence of a CEA block should imply RGB support */
-	info->color_formats = DRM_COLOR_FORMAT_RGB444;
+		if (info->cea_rev != edid_ext[1])
+			DRM_DEBUG_KMS("CEA extension version mismatch %u != %u\n",
+				      info->cea_rev, edid_ext[1]);
 
-	/* CTA DisplayID Data Block does not have byte #3 */
-	if (edid_ext[0] == CEA_EXT) {
+		/* The existence of a CTA extension should imply RGB support */
+		info->color_formats = DRM_COLOR_FORMAT_RGB444;
 		if (edid_ext[3] & EDID_CEA_YCRCB444)
 			info->color_formats |= DRM_COLOR_FORMAT_YCBCR444;
 		if (edid_ext[3] & EDID_CEA_YCRCB422)
 			info->color_formats |= DRM_COLOR_FORMAT_YCBCR422;
 	}
+	drm_edid_iter_end(&edid_iter);
 
 	cea_db_iter_edid_begin(edid, &iter);
 	cea_db_iter_for_each(db, &iter) {