Hi, Prabhakar,
On 9/5/23 15:56, Prabhakar wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>
> Validate the GPIO pin request in rzg2l_gpio_request() callback using
> rzg2l_validate_gpio_pin() function. This stops any accidental usage
> of GPIO pins which are not supported by the SoCs.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> ---
> drivers/pinctrl/renesas/pinctrl-rzg2l.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> index 37cdfe4b04f9..4ad08a4b786a 100644
> --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> @@ -795,12 +795,18 @@ static const struct pinconf_ops rzg2l_pinctrl_confops = {
> static int rzg2l_gpio_request(struct gpio_chip *chip, unsigned int offset)
> {
> struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
> + const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[offset];
> + u64 *pin_data = pin->drv_data;
Maybe move this down a bit to keep the reverse christmas tree order that
the driver is using as pattern.
Other than this:
Reviewed-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
Tested-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
> u32 port = RZG2L_PIN_ID_TO_PORT(offset);
> u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
> unsigned long flags;
> u8 reg8;
> int ret;
>
> + ret = rzg2l_validate_gpio_pin(pctrl, *pin_data, port, bit);
> + if (ret)
> + return ret;
> +
> ret = pinctrl_gpio_request(chip->base + offset);
> if (ret)
> return ret;
