[PATCH v4 03/10] gpio: mxc: use for_each_set_bit() to iterate wakeup pads

[Frank Li]

On Wed, Oct 07, 2026 at 06:44:18PM +0800, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan at nxp.com>
>
> Use for_each_set_bit() to iterate over the enabled wakeup pads instead
> of checking every bit individually.
>
> Signed-off-by: Peng Fan <peng.fan at nxp.com>
> ---

Reviewed-by: Frank Li <Frank.Li at nxp.com>

>  drivers/gpio/gpio-mxc.c | 26 ++++++++++++--------------
>  1 file changed, 12 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
> index 627fff6f1886..1ff5c2afb2e8 100644
> --- a/drivers/gpio/gpio-mxc.c
> +++ b/drivers/gpio/gpio-mxc.c
> @@ -593,22 +593,20 @@ static bool mxc_gpio_set_pad_wakeup(struct mxc_gpio_port *port, bool enable)
>  		IMX_SCU_WAKEUP_LOW_LVL,		/* IRQ_TYPE_LEVEL_LOW */
>  	};
>
> -	for (i = 0; i < 32; i++) {
> -		if ((port->wakeup_pads & (1 << i))) {
> -			type = port->pad_type[i];
> -			if (enable)
> -				config = pad_type_map[type];
> -			else
> -				config = IMX_SCU_WAKEUP_OFF;
> -
> -			if (is_imx8qm && config == IMX_SCU_WAKEUP_FALL_EDGE) {
> -				dev_warn_once(port->dev,
> -					      "No falling-edge support for wakeup on i.MX8QM\n");
> -				config = IMX_SCU_WAKEUP_OFF;
> -			}
> +	for_each_set_bit(i, &port->wakeup_pads, 32) {
> +		type = port->pad_type[i];
> +		if (enable)
> +			config = pad_type_map[type];
> +		else
> +			config = IMX_SCU_WAKEUP_OFF;
>
> -			ret |= mxc_gpio_generic_config(port, i, config);
> +		if (is_imx8qm && config == IMX_SCU_WAKEUP_FALL_EDGE) {
> +			dev_warn_once(port->dev,
> +				      "No falling-edge support for wakeup on i.MX8QM\n");
> +			config = IMX_SCU_WAKEUP_OFF;
>  		}
> +
> +		ret |= mxc_gpio_generic_config(port, i, config);
>  	}
>
>  	return ret;
>
> --
> 2.51.0
>
>