linux-kernel - [PATCH 1/1] pinctrl: sunxi: Fix incorrect NULL check

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Message-Id: <1375085972-657-1-git-send-email-sachin.kamat@linaro.org>
Date:	Mon, 29 Jul 2013 13:49:32 +0530
From:	Sachin Kamat <sachin.kamat@...aro.org>
To:	linux-kernel@...r.kernel.org
Cc:	linus.walleij@...aro.org, sachin.kamat@...aro.org,
	Maxime Ripard <maxime.ripard@...e-electrons.com>
Subject: [PATCH 1/1] pinctrl: sunxi: Fix incorrect NULL check

*map should be tested for NULL instead of map as kmalloc pointer
is assigned to it. This also fixes a potential null pointer dereference
bug later in the code.

Signed-off-by: Sachin Kamat <sachin.kamat@...aro.org>
Cc: Maxime Ripard <maxime.ripard@...e-electrons.com>
---
 drivers/pinctrl/pinctrl-sunxi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/pinctrl-sunxi.c b/drivers/pinctrl/pinctrl-sunxi.c
index c47fd1e..3655a5a 100644
--- a/drivers/pinctrl/pinctrl-sunxi.c
+++ b/drivers/pinctrl/pinctrl-sunxi.c
@@ -175,7 +175,7 @@ static int sunxi_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
 	}
 
 	*map = kmalloc(nmaps * sizeof(struct pinctrl_map), GFP_KERNEL);
-	if (!map)
+	if (!*map)
 		return -ENOMEM;
 
 	of_property_for_each_string(node, "allwinner,pins", prop, group) {
-- 
1.7.9.5

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