linux-kernel - [PATCH] rtc: ds1307: Clear OSF flag on DS1388 when setting time

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Date:   Tue, 18 Aug 2020 13:35:43 +1200
From:   Chris Packham <chris.packham@...iedtelesis.co.nz>
To:     a.zummo@...ertech.it, alexandre.belloni@...tlin.com
Cc:     linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: [PATCH] rtc: ds1307: Clear OSF flag on DS1388 when setting time

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@...iedtelesis.co.nz>
---
 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 54c85cdd019d..c9c3de14bc62 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
-- 
2.28.0