From patchwork Thu Nov  8 12:41:34 2012
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Subject: [2/2] rtc: sa1100: add 2038 year constraint for set_time
Date: Thu, 08 Nov 2012 02:41:34 -0000
From: Leo Song <liangs@marvell.com>
X-Patchwork-Id: 197834
Message-Id: <1352378494-23942-2-git-send-email-liangs@marvell.com>
To: Alessandro Zummo <a.zummo@towertech.it>,
	<rtc-linux@googlegroups.com>
Cc: Leo Song <liangs@marvell.com>, Yi Zhang <yizhang@marvell.com>

From: Yi Zhang <yizhang@marvell.com>

Change-Id: I77780c9f7143b0a6522d4f9092d1fc53d03ee3e1
Signed-off-by: Yi Zhang <yizhang@marvell.com>

---
drivers/rtc/rtc-sa1100.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

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;
 }