linux-kernel - Re: [PATCH 02/14] mmc: mmci: internalize dma map/unmap into mmci dma functions

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Date:   Mon, 3 Sep 2018 14:14:55 +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>,
        Gerald Baeza <gerald.baeza@...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>
Subject: Re: [PATCH 02/14] mmc: mmci: internalize dma map/unmap into mmci dma functions

On 1 August 2018 at 11:36, Ludovic Barre <ludovic.Barre@...com> wrote:
> From: Ludovic Barre <ludovic.barre@...com>
>
> This patch internalizes the management of dma map/unmap into
> mmci dma interfaces. This allows to simplify and prepare the next dma
> callbacks for mmci host ops.
> mmci_dma_unmap was called in mmci_data_irq & mmci_cmd_irq functions
> and can be integrated in mmci_dma_data_error.
>
> Signed-off-by: Ludovic Barre <ludovic.barre@...com>
> ---
>  drivers/mmc/host/mmci.c | 44 +++++++++++++++++++-------------------------
>  1 file changed, 19 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
> index 1841d250..d8fa178 100644
> --- a/drivers/mmc/host/mmci.c
> +++ b/drivers/mmc/host/mmci.c
> @@ -482,17 +482,7 @@ static inline void mmci_dma_release(struct mmci_host *host)
>         host->dma_rx_channel = host->dma_tx_channel = NULL;
>  }
>
> -static void mmci_dma_data_error(struct mmci_host *host)
> -{
> -       dev_err(mmc_dev(host->mmc), "error during DMA transfer!\n");
> -       dmaengine_terminate_all(host->dma_current);
> -       host->dma_in_progress = false;
> -       host->dma_current = NULL;
> -       host->dma_desc_current = NULL;
> -       host->data->host_cookie = 0;
> -}
> -
> -static void mmci_dma_unmap(struct mmci_host *host, struct mmc_data *data)
> +static void __mmci_dma_unmap(struct mmci_host *host, struct mmc_data *data)

The renaming of the function seems irrelevant to this change. Can you
please keep the existing name?

[...]

Besides the minor thing above, this looks good to me!

Kind regards
Uffe