diff options
| author | Gary Bisson <gary.bisson@boundarydevices.com> | 2017-04-25 16:45:14 +0200 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2017-05-31 09:17:02 +0200 |
| commit | 2de9261c18c2b09a8025872bb470853dc8db726c (patch) | |
| tree | b1c09c7520d81fcace10cfe7e3b3fc468511ec3a /drivers/rtc/rtc-m41t80.c | |
| parent | 8066360744743fb7f2dee1e2041fc9fc92f9d6b5 (diff) | |
| download | lwn-2de9261c18c2b09a8025872bb470853dc8db726c.tar.gz lwn-2de9261c18c2b09a8025872bb470853dc8db726c.zip | |
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 <gary.bisson@boundarydevices.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc/rtc-m41t80.c')
| -rw-r--r-- | drivers/rtc/rtc-m41t80.c | 3 |
1 files changed, 3 insertions, 0 deletions
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; |