From 641084c3751a235fd3695c565131e05d150ab0d1 Mon Sep 17 00:00:00 2001
From: wangyq13 <wangyq13@lenovo.com>
Date: Tue, 31 May 2022 17:41:33 +0800
Subject: [PATCH] drm/panel: check panel status before send custom commands

drm/panel:
Check whether panel is ready, before send custom command.
Otherwise, try to enable dsi,but actually fail.

Change-Id: Ia34efc2a6fe386e4d713303ce52248ebeb62c5a8
Signed-off-by: wangyq13 <wangyq13@lenovo.com>
Reviewed-on: https://gerrit.mot.com/2285035
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Hua Tan <tanhua1@motorola.com>
Submit-Approved: Jira Key
---
 msm/dsi/dsi_panel.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/msm/dsi/dsi_panel.c b/msm/dsi/dsi_panel.c
index 59dfb1190d6e..ba67f6a4fb2e 100644
--- a/msm/dsi/dsi_panel.c
+++ b/msm/dsi/dsi_panel.c
@@ -1011,6 +1011,11 @@ static int dsi_panel_send_param_cmd(struct dsi_panel *panel,
 
 	mutex_lock(&panel->panel_lock);
 
+	if (!panel->panel_initialized) {
+		rc = -ENODEV;
+		goto end;
+	}
+
 	if (param_info->value >= panel_param->val_max)
 		param_info->value = panel_param->val_max - 1;