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Message-Id: <1446739355-25849-1-git-send-email-clabbe.montjoie@gmail.com>
Date: Thu, 5 Nov 2015 17:02:35 +0100
From: LABBE Corentin <clabbe.montjoie@...il.com>
To: linus.walleij@...aro.org, gnurou@...il.com
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
LABBE Corentin <clabbe.montjoie@...il.com>
Subject: [PATCH] gpio: syscon: fix a possible NULL dereference
of_match_device could return NULL, and so cause a NULL pointer
dereference later at line 199:
priv->flags = of_id->data;
Reported-by: coverity (CID 1324140)
Signed-off-by: LABBE Corentin <clabbe.montjoie@...il.com>
---
drivers/gpio/gpio-syscon.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpio/gpio-syscon.c b/drivers/gpio/gpio-syscon.c
index 045a952..e673c58 100644
--- a/drivers/gpio/gpio-syscon.c
+++ b/drivers/gpio/gpio-syscon.c
@@ -192,6 +192,9 @@ static int syscon_gpio_probe(struct platform_device *pdev)
struct device_node *np = dev->of_node;
int ret;
+ if (!of_id)
+ return -ENODEV;
+
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
--
2.4.10
--
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