Merge "msm: mdss: Prevent race condition between dsi off and bta status check" (46e39da0) · Commits · e / devices / samsung / android_kernel_samsung_msm8916

drivers/video/msm/mdss/mdss_dsi_status.c

+10 −1

Original line number	Diff line number	Diff line
		/* 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 @@ static void check_dsi_ctrl_status(struct work_struct *work)
		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