arm/cpu-sa1110: replace schedule_timeout() with

Hi,

Please consider applying.

Description: Use msleep() instead of schedule_timeout() to guarantee the task delays as expected. Neither signals nor wait-queue events are important at this point in the code, I believe.

@@ -271,8 +271,7 @@ static int sa1110_target(struct cpufreq_
 	 */
 	sdram_set_refresh(2);
 	if (!irqs_disabled()) {
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(20 * HZ / 1000);
+		msleep(20);
 	} else {
 		mdelay(20);
 	}

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