On 9/6/24 5:03 AM, Ma Ke wrote:
> devm_kasprintf() can return a NULL pointer on failure but this returned
> value is not checked. Fix this lack and check the returned value.
>
> Found by code review.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 32c170ff15b0 ("pinctrl: stm32: set default gpio line names using pin names")
> Signed-off-by: Ma Ke <make24@xxxxxxxxxxx>
[...]
> diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
> index a8673739871d..f23b081f31b3 100644
> --- a/drivers/pinctrl/stm32/pinctrl-stm32.c
> +++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
> @@ -1374,10 +1374,16 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl, struct fwnode
>
> for (i = 0; i < npins; 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) {
> names[i] = devm_kasprintf(dev, GFP_KERNEL, "%s", stm32_pin->pin.name);
> - else
> + if (!names[i]) {
> + err = -ENOMEM;
> + goto err_clk;
> + }
> + }
> +
> + else {
No, that should be:
} else {
See Documentation/process/coding-style.rst, section 3.
> names[i] = NULL;
> + }
> }
[...]
MBR, Sergey
