[PATCH v2] media: st-mipid02: add a check for devm_gpiod_get_optional

From: Chuhong Yuan
Date: Thu Oct 17 2019 - 21:47:29 EST


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@xxxxxxxxx>
---
Changes in v2:
- Add an error message.

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