linux-kernel - Re: [PATCH v2 3/3] mmc: sdhci-s3c: constify uses of driver/match data

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Date:   Thu, 15 Apr 2021 14:02:46 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Cc:     Ben Dooks <ben-linux@...ff.org>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-mmc <linux-mmc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Sylwester Nawrocki <snawrocki@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [PATCH v2 3/3] mmc: sdhci-s3c: constify uses of driver/match data

On Thu, 15 Apr 2021 at 10:44, Krzysztof Kozlowski
<krzysztof.kozlowski@...onical.com> wrote:
>
> The driver data (struct sdhci_s3c_drv_data) stored in of_device_id
> table is allocated as const and used only in const-way.  Skip
> unnecessary const-away casts and convert all users to work with pointer
> to const.  This is both more logical and safer.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
>

Applied for next, thanks!

Kind regards
Uffe


> ---
>
> Changes since v1:
> 1. None
> ---
>  drivers/mmc/host/sdhci-s3c.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
> index a07a8f011741..862f033d235d 100644
> --- a/drivers/mmc/host/sdhci-s3c.c
> +++ b/drivers/mmc/host/sdhci-s3c.c
> @@ -462,21 +462,21 @@ static int sdhci_s3c_parse_dt(struct device *dev,
>  }
>  #endif
>
> -static inline struct sdhci_s3c_drv_data *sdhci_s3c_get_driver_data(
> +static inline const struct sdhci_s3c_drv_data *sdhci_s3c_get_driver_data(
>                         struct platform_device *pdev)
>  {
>  #ifdef CONFIG_OF
>         if (pdev->dev.of_node)
> -               return (struct sdhci_s3c_drv_data *)of_device_get_match_data(&pdev->dev);
> +               return of_device_get_match_data(&pdev->dev);
>  #endif
> -       return (struct sdhci_s3c_drv_data *)
> +       return (const struct sdhci_s3c_drv_data *)
>                         platform_get_device_id(pdev)->driver_data;
>  }
>
>  static int sdhci_s3c_probe(struct platform_device *pdev)
>  {
>         struct s3c_sdhci_platdata *pdata;
> -       struct sdhci_s3c_drv_data *drv_data;
> +       const struct sdhci_s3c_drv_data *drv_data;
>         struct device *dev = &pdev->dev;
>         struct sdhci_host *host;
>         struct sdhci_s3c *sc;
> @@ -761,7 +761,7 @@ static const struct platform_device_id sdhci_s3c_driver_ids[] = {
>  MODULE_DEVICE_TABLE(platform, sdhci_s3c_driver_ids);
>
>  #ifdef CONFIG_OF
> -static struct sdhci_s3c_drv_data exynos4_sdhci_drv_data = {
> +static const struct sdhci_s3c_drv_data exynos4_sdhci_drv_data = {
>         .no_divider = true,
>  };
>
> --
> 2.25.1
>