From: Claudiu Beznea claudiu.beznea@microchip.com
[ Upstream commit 310cd4c206cd04696ccbfd1927b5ab6973e8cc8e ]
devm_kasprintf() returns a pointer to dynamically allocated memory. Pointer could be NULL in case allocation fails. Check pointer validity. Identified with coccinelle (kmerr.cocci script).
Fixes: 7e5ea974e61c ("pinctrl: pinctrl-microchip-sgpio: Add pinctrl driver for Microsemi Serial GPIO") Signed-off-by: Claudiu Beznea claudiu.beznea@microchip.com Reviewed-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Link: https://lore.kernel.org/r/20230615105333.585304-3-claudiu.beznea@microchip.c... Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pinctrl/pinctrl-microchip-sgpio.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/pinctrl/pinctrl-microchip-sgpio.c b/drivers/pinctrl/pinctrl-microchip-sgpio.c index 4794602316e7d..666d8b7cdbad3 100644 --- a/drivers/pinctrl/pinctrl-microchip-sgpio.c +++ b/drivers/pinctrl/pinctrl-microchip-sgpio.c @@ -818,6 +818,9 @@ static int microchip_sgpio_register_bank(struct device *dev, pctl_desc->name = devm_kasprintf(dev, GFP_KERNEL, "%s-%sput", dev_name(dev), bank->is_input ? "in" : "out"); + if (!pctl_desc->name) + return -ENOMEM; + pctl_desc->pctlops = &sgpio_pctl_ops; pctl_desc->pmxops = &sgpio_pmx_ops; pctl_desc->confops = &sgpio_confops;