[PATCH 5.4 179/434] media: st-mipid02: add a check for devm_gpiod_get_optional

Greg Kroah-Hartman
2019-12-29T17:48:38Z

From: Chuhong Yuan <hslester96@gmail.com>

[ Upstream commit 61c03b631b74a38ab53753f3ee971a55886d4843 ]

mipid02_probe misses a check for devm_gpiod_get_optional and may miss
the failure.
Add a check to fix the problem.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/media/i2c/st-mipid02.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/media/i2c/st-mipid02.c b/drivers/media/i2c/st-mipid02.c
index 81285b8d5cfb..003ba22334cd 100644
--- a/drivers/media/i2c/st-mipid02.c
+++ b/drivers/media/i2c/st-mipid02.c
@@ -971,6 +971,11 @@ static int mipid02_probe(struct i2c_client *client)
bridge->reset_gpio = devm_gpiod_get_optional(dev, "reset",
GPIOD_OUT_HIGH);

+ if (IS_ERR(bridge->reset_gpio)) {
+ dev_err(dev, "failed to get reset GPIO\n");
+ return PTR_ERR(bridge->reset_gpio);
+ }
+
ret = mipid02_get_regulators(bridge);
if (ret) {
dev_err(dev, "failed to get regulators %d", ret);
--
2.20.1