linux-kernel - [PATCH 3/3] gpio: palmas: fix a possible NULL dereference

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Date:	Wed, 11 Nov 2015 21:27:36 +0100
From:	LABBE Corentin <clabbe.montjoie@...il.com>
To:	gnurou@...il.com, linus.walleij@...aro.org
Cc:	LABBE Corentin <clabbe.montjoie@...il.com>,
	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] gpio: palmas: fix a possible NULL dereference

of_match_device could return NULL, and so cause a NULL pointer
dereference later.

Reported-by: coverity (CID 1130700)
Signed-off-by: LABBE Corentin <clabbe.montjoie@...il.com>
---
 drivers/gpio/gpio-palmas.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpio/gpio-palmas.c b/drivers/gpio/gpio-palmas.c
index 171a638..52b447c 100644
--- a/drivers/gpio/gpio-palmas.c
+++ b/drivers/gpio/gpio-palmas.c
@@ -167,6 +167,8 @@ static int palmas_gpio_probe(struct platform_device *pdev)
 	const struct palmas_device_data *dev_data;
 
 	match = of_match_device(of_palmas_gpio_match, &pdev->dev);
+	if (!match)
+		return -ENODEV;
 	dev_data = match->data;
 	if (!dev_data)
 		dev_data = &palmas_dev_data;
-- 
2.4.10

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