linux-kernel - Re: [PATCH v3 3/3] iio: adc: tsc2046: silent spi_device

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Date:   Thu, 1 Sep 2022 17:20:49 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-iio <linux-iio@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>
Subject: Re: [PATCH v3 3/3] iio: adc: tsc2046: silent spi_device_id warning

On Thu, Sep 1, 2022 at 7:12 AM Oleksij Rempel <o.rempel@...gutronix.de> wrote:
>
> Add spi_device_id to silent following kernel runtime warning:
> "SPI driver tsc2046 has no spi_device_id for ti,tsc2046e-adc".

Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>

> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
> ---
> changes v3:
> - add missing point
> - remove unneeded blank line
> - assignment id at the definition line
> changes v2:
> - attach actual driver_data
> - use spi_get_device_id fallback
> ---
>  drivers/iio/adc/ti-tsc2046.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
>
> diff --git a/drivers/iio/adc/ti-tsc2046.c b/drivers/iio/adc/ti-tsc2046.c
> index bbc8b4137b0b1..d5d799972fefd 100644
> --- a/drivers/iio/adc/ti-tsc2046.c
> +++ b/drivers/iio/adc/ti-tsc2046.c
> @@ -762,6 +762,11 @@ static int tsc2046_adc_probe(struct spi_device *spi)
>         }
>
>         dcfg = device_get_match_data(dev);
> +       if (!dcfg) {
> +               const struct spi_device_id *id = spi_get_device_id(spi);
> +
> +               dcfg = (const struct tsc2046_adc_dcfg *)id->driver_data;
> +       }
>         if (!dcfg)
>                 return -EINVAL;
>
> @@ -878,11 +883,18 @@ static const struct of_device_id ads7950_of_table[] = {
>  };
>  MODULE_DEVICE_TABLE(of, ads7950_of_table);
>
> +static const struct spi_device_id tsc2046_adc_spi_ids[] = {
> +       { "tsc2046e-adc", (unsigned long)&tsc2046_adc_dcfg_tsc2046e },
> +       { }
> +};
> +MODULE_DEVICE_TABLE(spi, tsc2046_adc_spi_ids);
> +
>  static struct spi_driver tsc2046_adc_driver = {
>         .driver = {
>                 .name = "tsc2046",
>                 .of_match_table = ads7950_of_table,
>         },
> +       .id_table = tsc2046_adc_spi_ids,
>         .probe = tsc2046_adc_probe,
>         .remove = tsc2046_adc_remove,
>  };
> --
> 2.30.2
>


-- 
With Best Regards,
Andy Shevchenko