Re: [PATCH v3 3/3] pinctrl: qcom: Don't allow protected pins to be requested

[Timur Tabi]

On 03/21/2018 11:58 AM, Stephen Boyd wrote:
> +static int msm_gpio_init_valid_mask(struct gpio_chip *chip,
> +				    struct msm_pinctrl *pctrl)
> +{
> +	int ret;
> +	unsigned int len, i;
> +	unsigned int max_gpios = pctrl->soc->ngpios;
> +
> +	/* The number of GPIOs in the ACPI tables */
> +	ret = device_property_read_u16_array(pctrl->dev, "gpios", NULL, 0);
> +	if (ret > 0 && ret < max_gpios) {

This needs to be ret <= max_gpios, otherwise it will fail if every GPIO 
is available.

And it should print an error message and return an error code if ret > 
max_gpios.

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