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pinctrl: at91-pio4: check return value of devm_kasprintf()
[ Upstream commitf6fd5d4ff8
] 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:776180848b
("pinctrl: introduce driver for Atmel PIO4 controller") Depends-on:1c4e5c470a
("pinctrl: at91: use devm_kasprintf() to avoid potential leaks") Depends-on:5a8f9cf269
("pinctrl: at91-pio4: use proper format specifier for unsigned int") Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230615105333.585304-4-claudiu.beznea@microchip.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -1128,6 +1128,8 @@ static int atmel_pinctrl_probe(struct platform_device *pdev)
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/* Pin naming convention: P(bank_name)(bank_pin_number). */
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pin_desc[i].name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "P%c%d",
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bank + 'A', line);
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if (!pin_desc[i].name)
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return -ENOMEM;
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group->name = group_names[i] = pin_desc[i].name;
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group->pin = pin_desc[i].number;
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