rtc: hym8563: fix invalid year calculation

commit d5861262210067fc01b2fb4f7af2fd85a3453f15 upstream.

Year field must be in BCD format, according to
hym8563 datasheet.

Due to the bug year 2016 became 2010.

Fixes: dcaf03849352 ("rtc: add hym8563 rtc-driver")
Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c
index 097325d96db566e08ec8b70aaa9d595f6a044235..b1b4746a0eab5af524791d0868d8132d8014be4b 100644 (file)
--- a/drivers/rtc/rtc-hym8563.c
+++ b/drivers/rtc/rtc-hym8563.c
@@ -144,7 +144,7 @@ static int hym8563_rtc_set_time(struct device *dev, struct rtc_time *tm)
         * it does not seem to carry it over a subsequent write/read.
         * So we'll limit ourself to 100 years, starting at 2000 for now.
         */
-       buf[6] = tm->tm_year - 100;
+       buf[6] = bin2bcd(tm->tm_year - 100);
 
        /*
         * CTL1 only contains TEST-mode bits apart from stop,