linux-kernel - Re: [PATCH] mmc: core: Reduce code duplication to mmc_spi_send

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Date:   Tue, 2 Mar 2021 11:38:44 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Yue Hu <zbestahu@...il.com>
Cc:     "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Yue Hu <huyue2@...ong.com>, zhangwen@...ong.com,
        zbestahu@....com
Subject: Re: [PATCH] mmc: core: Reduce code duplication to mmc_spi_send_{csd|cid}

On Mon, 15 Feb 2021 at 02:51, Yue Hu <zbestahu@...il.com> wrote:
>
> From: Yue Hu <huyue2@...ong.com>
>
> mmc_spi_send_{csd|cid} have similar function body. Let's remove the
> duplicated part to simplify the code, just add opcode to distinguish
> them in changed mmc_spi_send_cxd().
>
> Signed-off-by: Yue Hu <huyue2@...ong.com>

Applied for next, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/core/mmc_ops.c | 39 +++++++++------------------------------
>  1 file changed, 9 insertions(+), 30 deletions(-)
>
> diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
> index 265d95e..f413474 100644
> --- a/drivers/mmc/core/mmc_ops.c
> +++ b/drivers/mmc/core/mmc_ops.c
> @@ -296,61 +296,40 @@ int mmc_set_relative_addr(struct mmc_card *card)
>         return 0;
>  }
>
> -static int mmc_spi_send_csd(struct mmc_host *host, u32 *csd)
> +static int mmc_spi_send_cxd(struct mmc_host *host, u32 *cxd, u32 opcode)
>  {
>         int ret, i;
> -       __be32 *csd_tmp;
> +       __be32 *cxd_tmp;
>
> -       csd_tmp = kzalloc(16, GFP_KERNEL);
> -       if (!csd_tmp)
> +       cxd_tmp = kzalloc(16, GFP_KERNEL);
> +       if (!cxd_tmp)
>                 return -ENOMEM;
>
> -       ret = mmc_send_cxd_data(NULL, host, MMC_SEND_CSD, csd_tmp, 16);
> +       ret = mmc_send_cxd_data(NULL, host, opcode, cxd_tmp, 16);
>         if (ret)
>                 goto err;
>
>         for (i = 0; i < 4; i++)
> -               csd[i] = be32_to_cpu(csd_tmp[i]);
> +               cxd[i] = be32_to_cpu(cxd_tmp[i]);
>
>  err:
> -       kfree(csd_tmp);
> +       kfree(cxd_tmp);
>         return ret;
>  }
>
>  int mmc_send_csd(struct mmc_card *card, u32 *csd)
>  {
>         if (mmc_host_is_spi(card->host))
> -               return mmc_spi_send_csd(card->host, csd);
> +               return mmc_spi_send_cxd(card->host, csd, MMC_SEND_CSD);
>
>         return mmc_send_cxd_native(card->host, card->rca << 16, csd,
>                                 MMC_SEND_CSD);
>  }
>
> -static int mmc_spi_send_cid(struct mmc_host *host, u32 *cid)
> -{
> -       int ret, i;
> -       __be32 *cid_tmp;
> -
> -       cid_tmp = kzalloc(16, GFP_KERNEL);
> -       if (!cid_tmp)
> -               return -ENOMEM;
> -
> -       ret = mmc_send_cxd_data(NULL, host, MMC_SEND_CID, cid_tmp, 16);
> -       if (ret)
> -               goto err;
> -
> -       for (i = 0; i < 4; i++)
> -               cid[i] = be32_to_cpu(cid_tmp[i]);
> -
> -err:
> -       kfree(cid_tmp);
> -       return ret;
> -}
> -
>  int mmc_send_cid(struct mmc_host *host, u32 *cid)
>  {
>         if (mmc_host_is_spi(host))
> -               return mmc_spi_send_cid(host, cid);
> +               return mmc_spi_send_cxd(host, cid, MMC_SEND_CID);
>
>         return mmc_send_cxd_native(host, 0, cid, MMC_ALL_SEND_CID);
>  }
> --
> 1.9.1
>