Merge "mdss: mdp: update dspp histogram states atomically"

				pr_err("hist error: dspp[%d] collect %d\n",

					dspp_num, ret);

		}

		/* state of dspp histogram blocks attached to logical display

		 * should be changed atomically to idle. This will ensure that

		 * histogram interrupt will see consistent states for all dspp's

		 * attached to logical display.

		 * */

		for (i = 0; i < hist_cnt; i++) {

			/* Change the state of histogram back to idle */

			if (!i)

				spin_lock_irqsave(&hists[i]->hist_lock, flag);

			else

				spin_lock(&hists[i]->hist_lock);

		}

		for (i = 0; i < hist_cnt; i++)

			hists[i]->col_state = HIST_IDLE;

			spin_unlock_irqrestore(&hists[i]->hist_lock, flag);

		for (i = hist_cnt - 1; i >= 0; i--) {

			if (!i)

				spin_unlock_irqrestore(&hists[i]->hist_lock,

						       flag);

			else

				spin_unlock(&hists[i]->hist_lock);

		}

		if (ret || temp_ret) {

			ret = ret ? ret : temp_ret;