linux-kernel - [PATCH 03/10] pinctrl: imx: Return directly after a failed devm_kcalloc() in imx_pinctrl_parse

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Date:   Fri, 14 Apr 2017 11:11:31 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-gpio@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        Gary Bisson <gary.bisson@...ndarydevices.com>,
        Laxman Dewangan <ldewangan@...dia.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Paul Gortmaker <paul.gortmaker@...driver.com>,
        Peng Fan <van.freenix@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Vladimir Zapolskiy <vladimir_zapolskiy@...tor.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 03/10] pinctrl: imx: Return directly after a failed
 devm_kcalloc() in imx_pinctrl_parse_functions()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 13 Apr 2017 15:12:20 +0200

Add a check for a null pointer and return an error code
after a memory allocation failure was detected.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/pinctrl/freescale/pinctrl-imx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c
index 975ed40cb774..f835e8210ace 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx.c
@@ -585,6 +585,8 @@ static int imx_pinctrl_parse_functions(struct device_node *np,
 					 func->num_group_names,
 					 sizeof(*func->group_names),
 					 GFP_KERNEL);
+	if (!func->group_names)
+		return -ENOMEM;
 
 	for_each_child_of_node(np, child) {
 		func->group_names[i] = child->name;
-- 
2.12.2