[PATCH] regulator: rt6245: Restore state on enable failure

[phucduc.bui@gmail.com]

From: bui duc phuc <phucduc.bui@gmail.com>

Currently, if regcache_sync() fails after the enable GPIO has been
asserted, the driver returns with enable_gpio still set high and
regcache_cache_only() left disabled. This leaves the device state
inconsistent with the disabled state, where the enable GPIO is low and
cache_only is enabled.
On failure, restore the original state by setting cache_only back to
true and driving the enable GPIO low before returning the error.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 drivers/regulator/rt6245-regulator.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/regulator/rt6245-regulator.c b/drivers/regulator/rt6245-regulator.c
index 1843ecec1922..5c0ee04e97ac 100644
--- a/drivers/regulator/rt6245-regulator.c
+++ b/drivers/regulator/rt6245-regulator.c
@@ -49,8 +49,11 @@ static int rt6245_enable(struct regulator_dev *rdev)
 
 	regcache_cache_only(regmap, false);
 	ret = regcache_sync(regmap);
-	if (ret)
+	if (ret) {
+		regcache_cache_only(regmap, true);
+		gpiod_direction_output(priv->enable_gpio, 0);
 		return ret;
+	}
 
 	priv->enable_state = true;
 	return 0;
-- 
2.43.0