Merge "msm: mdss: Prevent race condition between dsi off and bta status check"
diff --git a/drivers/video/msm/mdss/mdss_dsi_status.c b/drivers/video/msm/mdss/mdss_dsi_status.c
index f0c4f4c..fd7f3fd 100644
--- a/drivers/video/msm/mdss/mdss_dsi_status.c
+++ b/drivers/video/msm/mdss/mdss_dsi_status.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -86,6 +86,15 @@
mutex_lock(ctl->shared_lock);
mutex_lock(&mdp5_data->ov_lock);
+ if (pdsi_status->mfd->shutdown_pending) {
+ mutex_unlock(&mdp5_data->ov_lock);
+ if (ctl->shared_lock)
+ mutex_unlock(ctl->shared_lock);
+ pr_err("%s: DSI turning off, avoiding BTA status check\n",
+ __func__);
+ return;
+ }
+
/*
* For the command mode panels, we return pan display
* IOCTL on vsync interrupt. So, after vsync interrupt comes