diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index 25ac904..54a7b65 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -34,6 +34,7 @@
 #include <linux/pm.h>
 #include <linux/bitops.h>
 #include <linux/io.h>
+#include <linux/delay.h>
 
 #include <mach/hardware.h>
 #include <mach/irqs.h>
@@ -126,9 +127,14 @@ static int sa1100_rtc_set_time(struct device *dev, struct rtc_time *tm)
 	unsigned long time;
 	int ret;
 
+	if (tm->tm_year > 138)
+		return -EINVAL;
+
 	ret = rtc_tm_to_time(tm, &time);
 	if (ret == 0)
 		RCNR = time;
+
+	udelay(200);
 	return ret;
 }