[PATCH 5.8 426/633] rtc: ds1307: Clear OSF flag on DS1388 when setting time

Greg Kroah-Hartman
2020-10-27T17:04:19Z

From: Chris Packham <chris.packham@alliedtelesis.co.nz>

[ Upstream commit f471b05f76e4b1b6ba07ebc7681920a5c5b97c5d ]

Ensure the OSF flag is cleared on the DS1388 when the clock is set.

Fixes: df11b323b16f ("rtc: ds1307: handle oscillator failure flags for ds1388 variant")
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200818013543.4283-1-chris.packham@alliedtelesis.co.nz
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/rtc/rtc-ds1307.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 49702942bb086..70b198423deba 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -352,6 +352,10 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t)
regmap_update_bits(ds1307->regmap, DS1340_REG_FLAG,
DS1340_BIT_OSF, 0);
break;
+ case ds_1388:
+ regmap_update_bits(ds1307->regmap, DS1388_REG_FLAG,
+ DS1388_BIT_OSF, 0);
+ break;
case mcp794xx:
/*
* these bits were cleared when preparing the date/time
--
2.25.1