pinctrl: imx: Check for memory allocation failure

If 'devm_kzalloc' fails, a NULL pointer will be dereferenced.
Return -ENOMEM instead, as done for the other memory allocation just a
few lines below.
BTW, change the 'devm_kzalloc' into a 'devm_kcalloc'.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c
index 74bd90d..90a946c 100644 (file)
--- a/drivers/pinctrl/freescale/pinctrl-imx.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx.c
@@ -581,9 +581,10 @@ static int imx_pinctrl_parse_functions(struct device_node *np,
                dev_err(info->dev, "no groups defined in %s\n", np->full_name);
                return -EINVAL;
        }
-       func->group_names = devm_kzalloc(info->dev,
-                                        func->num_group_names *
+       func->group_names = devm_kcalloc(info->dev, func->num_group_names,
                                         sizeof(char *), GFP_KERNEL);
+       if (!func->group_names)
+               return -ENOMEM;
 
        for_each_child_of_node(np, child) {
                func->group_names[i] = child->name;