pinctrl: ralink: rt2880: add missing NULL check

Memory is being requested to the kernel but there is
a missing check for NULL. Hence, add it.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20201213161721.6514-5-sergio.paracuellos@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/ralink/pinctrl-rt2880.c b/drivers/pinctrl/ralink/pinctrl-rt2880.c
index 6e0bf7c..3c3336b 100644 (file)
--- a/drivers/pinctrl/ralink/pinctrl-rt2880.c
+++ b/drivers/pinctrl/ralink/pinctrl-rt2880.c
@@ -238,6 +238,8 @@ static int rt2880_pinmux_index(struct rt2880_priv *p)
                        p->func[c] = &p->groups[i].func[j];
                        p->func[c]->groups = devm_kzalloc(p->dev, sizeof(int),
                                                    GFP_KERNEL);
+                       if (!p->func[c]->groups)
+                               return -ENOMEM;
                        p->func[c]->groups[0] = i;
                        p->func[c]->group_count = 1;
                        c++;