rtc: vt8500: Fix year field in vt8500_rtc_set_time

Submitted by Tony Prisk on Dec. 30, 2012, 6:56 p.m.

Details

Message ID 1356893793-29537-1-git-send-email-linux@prisktech.co.nz
State Superseded
Headers show

Commit Message

Tony Prisk Dec. 30, 2012, 6:56 p.m.
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>
---
Patch based on 3.8-rc1

 drivers/rtc/rtc-vt8500.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch hide | download patch | download mbox

diff --git a/drivers/rtc/rtc-vt8500.c b/drivers/rtc/rtc-vt8500.c
index 14e2d8c..37b42a4 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) << DATE_MONTH_S)
 		| (bin2bcd(tm->tm_mday)),
 		vt8500_rtc->regbase + VT8500_RTC_DS);