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pinctrl: sunplus: Add check for kcalloc 

As the potential failure of the kcalloc(),
it should be better to check it in order to
avoid the dereference of the NULL pointer.

Fixes: aa74c44be1 ("pinctrl: Add driver for Sunplus SP7021")
Reported-by: Hacash Robot <hacashRobot@santino.com>
Signed-off-by: William Dean <williamsukatube@gmail.com>
Link: https://lore.kernel.org/r/20220710154822.2610801-1-williamsukatube@163.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
William Dean 2022-07-10 23:48:22 +08:00 committed by Linus Walleij
parent c3b821e8e4
commit acf50233fc
1 changed files with 3 additions and 0 deletions
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3
drivers/pinctrl/sunplus/sppctl.c
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@ -871,6 +871,9 @@ static int sppctl_dt_node_to_map(struct pinctrl_dev *pctldev, struct device_node
}
*map = kcalloc(*num_maps + nmG, sizeof(**map), GFP_KERNEL);
if (*map == NULL)
return -ENOMEM;
for (i = 0; i < (*num_maps); i++) {
dt_pin = be32_to_cpu(list[i]);
pin_num = FIELD_GET(GENMASK(31, 24), dt_pin);