disp: msm: dsi: set qsync min fps list length to zero

In certain usecase where qsync is enabled without qsync
min fps list, incorrect list length might cause issues
while populating modes. This change sets qsync_min_fps
length to zero if its empty which resolves such issues.

Change-Id: I23083d8fd9610665dad63188f5d2db7eb6b23ee1
Signed-off-by: Mahadevan <[email protected]>

msm/dsi/dsi_panel.c

@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
+ * Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved.
  * Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.
  */
 
@@ -1334,8 +1335,10 @@ static int dsi_panel_parse_qsync_caps(struct dsi_panel *panel,
 	 */
 	qsync_caps->qsync_min_fps_list_len = utils->count_u32_elems(utils->data,
 				  "qcom,dsi-supported-qsync-min-fps-list");
-	if (qsync_caps->qsync_min_fps_list_len < 1)
+	if (qsync_caps->qsync_min_fps_list_len < 1) {
+		qsync_caps->qsync_min_fps_list_len = 0;
 		goto qsync_support;
+	}
 
 	/**
 	 * qcom,dsi-supported-qsync-min-fps-list cannot be defined