[PATCH] iio: accel: mma9551: Check gpiod_to_irq return value

[Roberta Dobrescu]

The return value of gpiod_to_irq should be checked before giving
it to devm_request_threaded_irq in order to not pass an error
code in case it fails.

Signed-off-by: Roberta Dobrescu <roberta.dobrescu at gmail.com>
---
 drivers/iio/accel/mma9551.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/accel/mma9551.c b/drivers/iio/accel/mma9551.c
index 46c3835..b6f3041 100644
--- a/drivers/iio/accel/mma9551.c
+++ b/drivers/iio/accel/mma9551.c
@@ -428,7 +428,11 @@ static int mma9551_gpio_probe(struct iio_dev *indio_dev)
 		if (ret)
 			return ret;
 
-		data->irqs[i] = gpiod_to_irq(gpio);
+		ret = gpiod_to_irq(gpio);
+		if (ret < 0)
+			return ret;
+
+		data->irqs[i] = ret;
 		ret = devm_request_threaded_irq(dev, data->irqs[i],
 				NULL, mma9551_event_handler,
 				IRQF_TRIGGER_RISING | IRQF_ONESHOT,
-- 
1.9.1