Re: [PATCH v2 4/4] pinctrl: scmi: Switch to use machine_blocklist

[Saravana Kannan]

On Sun, Jan 19, 2025 at 11:14 PM Peng Fan (OSS) <peng.fan@xxxxxxxxxxx> wrote:
>
> From: Peng Fan <peng.fan@xxxxxxx>
>
> With machine_blocklist, the blocked machines will not have pinctrl scmi
> devices created. The fw_devlink will link consumer and supplier
> correctly.
>
> Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
> ---
>  drivers/pinctrl/pinctrl-scmi.c | 15 ++++++---------
>  1 file changed, 6 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/pinctrl/pinctrl-scmi.c b/drivers/pinctrl/pinctrl-scmi.c
> index df4bbcd7d1d59ac2c8ddc320dc10d702ad1ed5b2..f041478758b50e85d99214f4fe42208d0c8c808f 100644
> --- a/drivers/pinctrl/pinctrl-scmi.c
> +++ b/drivers/pinctrl/pinctrl-scmi.c
> @@ -505,11 +505,6 @@ static int pinctrl_scmi_get_pins(struct scmi_pinctrl *pmx,
>         return 0;
>  }
>
> -static const char * const scmi_pinctrl_blocklist[] = {
> -       "fsl,imx95",
> -       NULL
> -};
> -
>  static int scmi_pinctrl_probe(struct scmi_device *sdev)
>  {
>         int ret;
> @@ -521,9 +516,6 @@ static int scmi_pinctrl_probe(struct scmi_device *sdev)
>         if (!sdev->handle)
>                 return -EINVAL;
>
> -       if (of_machine_compatible_match(scmi_pinctrl_blocklist))
> -               return -ENODEV;
> -
>         handle = sdev->handle;
>
>         pinctrl_ops = handle->devm_protocol_get(sdev, SCMI_PROTOCOL_PINCTRL, &ph);
> @@ -561,8 +553,13 @@ static int scmi_pinctrl_probe(struct scmi_device *sdev)
>         return pinctrl_enable(pmx->pctldev);
>  }
>
> +static const char * const scmi_pinctrl_blocklist[] = {
> +       "fsl,imx95",
> +       NULL
> +};
> +
>  static const struct scmi_device_id scmi_id_table[] = {
> -       { SCMI_PROTOCOL_PINCTRL, "pinctrl" },
> +       { SCMI_PROTOCOL_PINCTRL, "pinctrl", scmi_pinctrl_blocklist, NULL },
>         { }
>  };
>  MODULE_DEVICE_TABLE(scmi, scmi_id_table);
>

Definite NACK to this. Please don't depend on indirect
conditions/flags. There's no guarantee that this check will hold true
in the future.

-Saravana