[PATCH AUTOSEL 4.14 10/89] media: i2c: ov5640: Check for devm_gpiod_get_optional() error

From: Sasha Levin
Date: Sun Sep 22 2019 - 15:13:40 EST


From: Fabio Estevam <festevam@xxxxxxxxx>

[ Upstream commit 8791a102ce579346cea9d2f911afef1c1985213c ]

The power down and reset GPIO are optional, but the return value
from devm_gpiod_get_optional() needs to be checked and propagated
in the case of error, so that probe deferral can work.

Signed-off-by: Fabio Estevam <festevam@xxxxxxxxx>
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/media/i2c/ov5640.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index acf5c8a55bbd2..69f564b0837a7 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -2261,9 +2261,14 @@ static int ov5640_probe(struct i2c_client *client,
/* request optional power down pin */
sensor->pwdn_gpio = devm_gpiod_get_optional(dev, "powerdown",
GPIOD_OUT_HIGH);
+ if (IS_ERR(sensor->pwdn_gpio))
+ return PTR_ERR(sensor->pwdn_gpio);
+
/* request optional reset pin */
sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
GPIOD_OUT_HIGH);
+ if (IS_ERR(sensor->reset_gpio))
+ return PTR_ERR(sensor->reset_gpio);

v4l2_i2c_subdev_init(&sensor->sd, client, &ov5640_subdev_ops);

--
2.20.1