rtc: ds1347: mask ALM OUT when reading time

Bit 7 of the minutes registers is ALM OUT. It indicates an alarm fired.
Mask it out when reading the time.

Link: https://lore.kernel.org/r/20191007134724.15505-5-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/rtc/rtc-ds1347.c b/drivers/rtc/rtc-ds1347.c
index 06abf0b..763eb60 100644 (file)
--- a/drivers/rtc/rtc-ds1347.c
+++ b/drivers/rtc/rtc-ds1347.c
@@ -52,7 +52,7 @@ static int ds1347_read_time(struct device *dev, struct rtc_time *dt)
                return err;
 
        dt->tm_sec = bcd2bin(buf[0]);
-       dt->tm_min = bcd2bin(buf[1]);
+       dt->tm_min = bcd2bin(buf[1] & 0x7f);
        dt->tm_hour = bcd2bin(buf[2] & 0x3F);
        dt->tm_mday = bcd2bin(buf[3]);
        dt->tm_mon = bcd2bin(buf[4]) - 1;