Merge "msm: mdss: ensure clocks are on till pixel transfer is completed" into msm-4.9

	MDSS_XLOG(ctrl->ndx, enable, ctrl->mdp_busy, current->pid,

		client);

	if (enable == 0) {

	/*

	 * ensure that before going into ecg or turning

	 * off the clocks, cmd_mdp_busy is not true. During a

	 * race condition, clocks are turned off and so the

	 * isr for cmd_mdp_busy does not get cleared in hw.

	 */

	if (enable == MDSS_DSI_CLK_OFF ||

		enable == MDSS_DSI_CLK_EARLY_GATE) {

		/* need wait before disable */

		mutex_lock(&ctrl->cmd_mutex);

		mdss_dsi_cmd_mdp_busy(ctrl);