From debf6d843eaa3622786c45eb6edbc46f38f31a90 Mon Sep 17 00:00:00 2001
From: Roberta Dobrescu <roberta.dobrescu@gmail.com>
Date: Mon, 2 Mar 2015 12:39:12 +0200
Subject: [PATCH] iio: accel: mma9551: Check gpiod_to_irq return value
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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@gmail.com>
Reviewed-by: Vlad Dogaru <vlad.dogaru@intel.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
---
 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 1277f407cd12..7db7cc0bf362 100644
--- a/drivers/iio/accel/mma9551.c
+++ b/drivers/iio/accel/mma9551.c
@@ -425,7 +425,11 @@ static int mma9551_gpio_probe(struct iio_dev *indio_dev)
 			return PTR_ERR(gpio);
 		}
 
-		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,
-- 
2.20.1