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pinctrl: microchip-sgpio: check return value of devm_kasprintf() 

[ Upstream commit 310cd4c206 ]

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: 7e5ea974e6 ("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.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Claudiu Beznea 2023-06-15 13:53:32 +03:00 committed by Greg Kroah-Hartman
parent 4e82f92c34
commit 35404a47ba
1 changed files with 3 additions and 0 deletions
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3
drivers/pinctrl/pinctrl-microchip-sgpio.c
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@ -816,6 +816,9 @@ static int microchip_sgpio_register_bank(struct device *dev,
pctl_desc->name = devm_kasprintf(dev, GFP_KERNEL, "%s-%sput", pctl_desc->name = devm_kasprintf(dev, GFP_KERNEL, "%s-%sput",
dev_name(dev), dev_name(dev),
bank->is_input ? "in" : "out"); bank->is_input ? "in" : "out");
if (!pctl_desc->name)
return -ENOMEM;
pctl_desc->pctlops = &sgpio_pctl_ops; pctl_desc->pctlops = &sgpio_pctl_ops;
pctl_desc->pmxops = &sgpio_pmx_ops; pctl_desc->pmxops = &sgpio_pmx_ops;
pctl_desc->confops = &sgpio_confops; pctl_desc->confops = &sgpio_confops;