[PATCH 1/2] regulator: act8945a: fix OF node reference imbalance

[Johan Hovold <johan@kernel.org>]

The driver reuses the OF node of the parent multi-function device but
fails to take another reference to balance the one dropped by the
platform bus code when unbinding the MFD and deregistering the child
devices.

Fix this by using the intended helper for reusing OF nodes.

Fixes: 38c09961048b ("regulator: act8945a: add regulator driver for ACT8945A")
Cc: stable@vger.kernel.org	# 4.6
Cc: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/regulator/act8945a-regulator.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/regulator/act8945a-regulator.c b/drivers/regulator/act8945a-regulator.c
index 24cbdd833863..5bbe2bce740e 100644
--- a/drivers/regulator/act8945a-regulator.c
+++ b/drivers/regulator/act8945a-regulator.c
@@ -302,8 +302,9 @@ static int act8945a_pmic_probe(struct platform_device *pdev)
 		num_regulators = ARRAY_SIZE(act8945a_regulators);
 	}
 
+	device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
+
 	config.dev = &pdev->dev;
-	config.dev->of_node = pdev->dev.parent->of_node;
 	config.driver_data = act8945a;
 	for (i = 0; i < num_regulators; i++) {
 		rdev = devm_regulator_register(&pdev->dev, &regulators[i],
-- 
2.52.0