[PATCH] regulator: core: Fix c_rdev reference leak in regulator_resolve_coupling()

[Wentao Liang]

of_parse_coupled_regulator() returns the coupled regulator with its
device reference incremented, but regulator_resolve_coupling() returns
without dropping it when the coupled regulator belongs to a different
coupler, leaking the reference.

Fixes: d8ca7d184b33 ("regulator: core: Introduce API for regulators coupling customization")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Wentao Liang <vulab@xxxxxxxxxxx>
---
 drivers/regulator/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index dc5d67767336..0ae11a521943 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -5843,6 +5843,7 @@ static void regulator_resolve_coupling(struct regulator_dev *rdev)
 		if (c_rdev->coupling_desc.coupler != coupler) {
 			rdev_err(rdev, "coupler mismatch with %s\n",
 				 rdev_get_name(c_rdev));
+			put_device(&c_rdev->dev);
 			return;
 		}
 
-- 
2.34.1