From 2de9261c18c2b09a8025872bb470853dc8db726c Mon Sep 17 00:00:00 2001 From: Gary Bisson Date: Tue, 25 Apr 2017 16:45:14 +0200 Subject: [PATCH] rtc: m41t80: fix SQWE override when setting an alarm Currently setting an alarm clears the SQWE bit which means that the clock output is disabled no matter its previous state. Signed-off-by: Gary Bisson Signed-off-by: Alexandre Belloni --- drivers/rtc/rtc-m41t80.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index 5ec4653022ff..b0749645aa48 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -332,6 +332,9 @@ static int m41t80_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) return err; } + /* Keep SQWE bit value */ + alarmvals[0] |= (ret & M41T80_ALMON_SQWE); + ret = i2c_smbus_read_byte_data(client, M41T80_REG_FLAGS); if (ret < 0) return ret; -- 2.20.1