From: Tony Prisk <linux@prisktech.co.nz>
Date: Mon, 4 Feb 2013 22:28:44 +0000 (-0800)
Subject: drivers/rtc/rtc-vt8500.c: fix year field in vt8500_rtc_set_time()
X-Git-Tag: v3.8-rc7~16^2~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3bdf8cd3226fe11f26ce32bbb4c5e381cf807c89;p=profile%2Fivi%2Fkernel-x86-ivi.git

drivers/rtc/rtc-vt8500.c: fix year field in vt8500_rtc_set_time()

The year field is incorrectly masked when setting the date.  If the year
is beyond 2099, the year field will be incorrectly updated in hardware.

This patch masks the year field correctly.

Signed-off-by: Edgar Toernig <froese@gmx.de>
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/rtc/rtc-vt8500.c b/drivers/rtc/rtc-vt8500.c
index 00c930f4b6f..2730533e2d2 100644
--- a/drivers/rtc/rtc-vt8500.c
+++ b/drivers/rtc/rtc-vt8500.c
@@ -137,7 +137,7 @@ static int vt8500_rtc_set_time(struct device *dev, struct rtc_time *tm)
 		return -EINVAL;
 	}
 
-	writel((bin2bcd(tm->tm_year - 100) << DATE_YEAR_S)
+	writel((bin2bcd(tm->tm_year % 100) << DATE_YEAR_S)
 		| (bin2bcd(tm->tm_mon + 1) << DATE_MONTH_S)
 		| (bin2bcd(tm->tm_mday))
 		| ((tm->tm_year >= 200) << DATE_CENTURY_S),