linux-kernel - Re: [PATCH v2 07/28] spi: s3c64xx: remove unneeded (void *) casts in of_match

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Date: Thu, 25 Jan 2024 13:04:20 -0600
From: Sam Protsenko <semen.protsenko@...aro.org>
To: Tudor Ambarus <tudor.ambarus@...aro.org>
Cc: broonie@...nel.org, andi.shyti@...nel.org, arnd@...db.de, 
	robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org, 
	alim.akhtar@...sung.com, linux-spi@...r.kernel.org, 
	linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-arch@...r.kernel.org, andre.draszik@...aro.org, 
	peter.griffin@...aro.org, kernel-team@...roid.com, willmcvicker@...gle.com
Subject: Re: [PATCH v2 07/28] spi: s3c64xx: remove unneeded (void *) casts in of_match_table

On Thu, Jan 25, 2024 at 8:50 AM Tudor Ambarus <tudor.ambarus@...aroorg> wrote:
>
> of_device_id::data is an opaque pointer. No explicit cast is needed.
> Remove unneeded (void *) casts in of_match_table. While here align the
> compatible and data members.
>
> Reviewed-by: Andi Shyti <andi.shyti@...nel.org>
> Signed-off-by: Tudor Ambarus <tudor.ambarus@...aro.org>
> ---
>  drivers/spi/spi-s3c64xx.c | 45 +++++++++++++++++++++++----------------
>  1 file changed, 27 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
> index 230fda2b3417..137faf9f2697 100644
> --- a/drivers/spi/spi-s3c64xx.c
> +++ b/drivers/spi/spi-s3c64xx.c
> @@ -1511,32 +1511,41 @@ static const struct platform_device_id s3c64xx_spi_driver_ids[] = {
>  };
>
>  static const struct of_device_id s3c64xx_spi_dt_match[] = {
> -       { .compatible = "samsung,s3c2443-spi",
> -                       .data = (void *)&s3c2443_spi_port_config,

I support removing (void *) cast. But this new braces style:

      },
      {

seems to bloat the code a bit. For my taste, having something like },
{ on the same line would be more compact, and more canonical so to
speak. Or even preserving the existing style would be ok too, for that
matter.

Assuming the braces style is fixed, you can add:

Reviewed-by: Sam Protsenko <semen.protsenko@...aro.org>

> +       {
> +               .compatible = "samsung,s3c2443-spi",
> +               .data = &s3c2443_spi_port_config,
>         },
> -       { .compatible = "samsung,s3c6410-spi",
> -                       .data = (void *)&s3c6410_spi_port_config,
> +       {
> +               .compatible = "samsung,s3c6410-spi",
> +               .data = &s3c6410_spi_port_config,
>         },
> -       { .compatible = "samsung,s5pv210-spi",
> -                       .data = (void *)&s5pv210_spi_port_config,
> +       {
> +               .compatible = "samsung,s5pv210-spi",
> +               .data = &s5pv210_spi_port_config,
>         },
> -       { .compatible = "samsung,exynos4210-spi",
> -                       .data = (void *)&exynos4_spi_port_config,
> +       {
> +               .compatible = "samsung,exynos4210-spi",
> +               .data = &exynos4_spi_port_config,
>         },
> -       { .compatible = "samsung,exynos7-spi",
> -                       .data = (void *)&exynos7_spi_port_config,
> +       {
> +               .compatible = "samsung,exynos7-spi",
> +               .data = &exynos7_spi_port_config,
>         },
> -       { .compatible = "samsung,exynos5433-spi",
> -                       .data = (void *)&exynos5433_spi_port_config,
> +       {
> +               .compatible = "samsung,exynos5433-spi",
> +               .data = &exynos5433_spi_port_config,
>         },
> -       { .compatible = "samsung,exynos850-spi",
> -                       .data = (void *)&exynos850_spi_port_config,
> +       {
> +               .compatible = "samsung,exynos850-spi",
> +               .data = &exynos850_spi_port_config,
>         },
> -       { .compatible = "samsung,exynosautov9-spi",
> -                       .data = (void *)&exynosautov9_spi_port_config,
> +       {
> +               .compatible = "samsung,exynosautov9-spi",
> +               .data = &exynosautov9_spi_port_config,
>         },
> -       { .compatible = "tesla,fsd-spi",
> -                       .data = (void *)&fsd_spi_port_config,
> +       {
> +               .compatible = "tesla,fsd-spi",
> +               .data = &fsd_spi_port_config,
>         },
>         { },
>  };
> --
> 2.43.0.429.g432eaa2c6b-goog
>