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pinctrl: stm32: Add check for devm_kcalloc

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[ Upstream commit b0eeba527e704d6023a6cd9103f929226e326b03 ]

Add check for the return value of devm_kcalloc() and return the error
if it fails in order to avoid NULL pointer dereference.

Fixes: 32c170ff15 ("pinctrl: stm32: set default gpio line names using pin names")
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Acked-by: Valentin Caron <valentin.caron@foss.st.com>
Link: https://lore.kernel.org/r/20231031080807.3600656-1-nichen@iscas.ac.cn
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Stable-dep-of: 451bc9aea9a1 ("pinctrl: stm32: Add check for clk_enable()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chen Ni
2023-10-31 08:08:07 +00:00
committed by Greg Kroah-Hartman
parent 75285cb2b4
commit 1a1cfd1456
1 changed files with 5 additions and 0 deletions
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5
drivers/pinctrl/stm32/pinctrl-stm32.c
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@@ -1377,6 +1377,11 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl, struct fwnode
} }
names = devm_kcalloc(dev, npins, sizeof(char *), GFP_KERNEL); names = devm_kcalloc(dev, npins, sizeof(char *), GFP_KERNEL);
if (!names) {
err = -ENOMEM;
goto err_clk;
}
for (i = 0; i < npins; i++) { for (i = 0; i < npins; i++) {
stm32_pin = stm32_pctrl_get_desc_pin_from_gpio(pctl, bank, i); stm32_pin = stm32_pctrl_get_desc_pin_from_gpio(pctl, bank, i);
if (stm32_pin && stm32_pin->pin.name) if (stm32_pin && stm32_pin->pin.name)