linux-kernel - Re: [PATCH V2 05/27] mmc: mmci: move mmci next cookie to mci host

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Date:   Mon, 24 Sep 2018 20:46:30 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Ludovic Barre <ludovic.Barre@...com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Gerald Baeza <gerald.baeza@...com>,
        Loic Pallardy <loic.pallardy@...com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH V2 05/27] mmc: mmci: move mmci next cookie to mci host

On 21 September 2018 at 11:45, Ludovic Barre <ludovic.Barre@...com> wrote:
> From: Ludovic Barre <ludovic.barre@...com>
>
> This patch moves next cookie to mmci host structure to
> share same cookie management between all variants.

I would suggest you to squash this with patch4, as I think it makes
more sense to keep these changes together.

>
> Signed-off-by: Ludovic Barre <ludovic.barre@...com>
> ---
>  drivers/mmc/host/mmci.c | 10 ++++------
>  drivers/mmc/host/mmci.h |  2 ++
>  2 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
> index 6de7c8d..43f2a1a 100644
> --- a/drivers/mmc/host/mmci.c
> +++ b/drivers/mmc/host/mmci.c
> @@ -418,7 +418,6 @@ static void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
>  struct mmci_dmae_next {
>         struct dma_async_tx_descriptor *desc;
>         struct dma_chan *chan;
> -       s32 cookie;
>  };
>
>  struct mmci_dmae_priv {
> @@ -449,7 +448,7 @@ static int mmci_dma_setup(struct mmci_host *host)
>                                                      "tx");
>
>         /* initialize pre request cookie */
> -       dmae->next_data.cookie = 1;
> +       host->next_cookie = 1;
>
>         /*
>          * If only an RX channel is specified, the driver will
> @@ -716,7 +715,7 @@ static void mmci_get_next_data(struct mmci_host *host, struct mmc_data *data)
>         struct mmci_dmae_priv *dmae = host->dma_priv;
>         struct mmci_dmae_next *next = &dmae->next_data;
>
> -       WARN_ON(data->host_cookie && data->host_cookie != next->cookie);
> +       WARN_ON(data->host_cookie && data->host_cookie != host->next_cookie);
>         WARN_ON(!data->host_cookie && (next->desc || next->chan));
>
>         dmae->desc_current = next->desc;
> @@ -728,9 +727,7 @@ static void mmci_get_next_data(struct mmci_host *host, struct mmc_data *data)
>  static void mmci_pre_request(struct mmc_host *mmc, struct mmc_request *mrq)
>  {
>         struct mmci_host *host = mmc_priv(mmc);
> -       struct mmci_dmae_priv *dmae = host->dma_priv;
>         struct mmc_data *data = mrq->data;
> -       struct mmci_dmae_next *nd = &dmae->next_data;
>
>         if (!data)
>                 return;
> @@ -741,7 +738,8 @@ static void mmci_pre_request(struct mmc_host *mmc, struct mmc_request *mrq)
>                 return;
>
>         if (!mmci_dma_prep_next(host, data))
> -               data->host_cookie = ++nd->cookie < 0 ? 1 : nd->cookie;
> +               data->host_cookie = ++host->next_cookie < 0 ?
> +                       1 : host->next_cookie;
>  }
>
>  static void mmci_post_request(struct mmc_host *mmc, struct mmc_request *mrq,
> diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
> index 1e9a45b..5bb1ce2 100644
> --- a/drivers/mmc/host/mmci.h
> +++ b/drivers/mmc/host/mmci.h
> @@ -318,5 +318,7 @@ struct mmci_host {
>         int (*get_rx_fifocnt)(struct mmci_host *h, u32 status, int remain);
>
>         void                    *dma_priv;
> +
> +       s32                     next_cookie;
>  };
>
> --
> 2.7.4
>

Kind regards
Uffe