[PATCH] ARM: replace schedule_timeout() with msleep()

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.
Signed-off-by: NNishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: NDomen Puncer <domen@coderock.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-sa1100/cpu-sa1110.c

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