Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <20220427120310.838843-1-wanjiabing@vivo.com>
In-Reply-To: <20220427120310.838843-1-wanjiabing@vivo.com>
From:   Ulf Hansson <ulf.hansson@linaro.org>
Date:   Wed, 4 May 2022 12:37:22 +0200
Message-ID: <CAPDyKFoCTX3E-D2OW_YMp0EJ2y872e+Nd-0XtinBD0vmwHjSZw@mail.gmail.com>
Subject: Re: [PATCH] mmc: atmel-mci: Simplify if(chan) and if(!chan)
To:     Wan Jiabing <wanjiabing@vivo.com>
Cc:     Ludovic Desroches <ludovic.desroches@microchip.com>,
        Nicolas Ferre <nicolas.ferre@microchip.com>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
        Claudiu Beznea <claudiu.beznea@microchip.com>,
        linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Wed, 27 Apr 2022 at 14:03, Wan Jiabing <wanjiabing@vivo.com> wrote:
>
> Use if(!host->dma.chan) instead of if(chan) and if(!chan) to make
> code better.
>
> Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>

Applied for next, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/host/atmel-mci.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
> index 807177c953f3..91d52ba7a39f 100644
> --- a/drivers/mmc/host/atmel-mci.c
> +++ b/drivers/mmc/host/atmel-mci.c
> @@ -1122,13 +1122,12 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
>         }
>
>         /* If we don't have a channel, we can't do DMA */
> -       chan = host->dma.chan;
> -       if (chan)
> -               host->data_chan = chan;
> -
> -       if (!chan)
> +       if (!host->dma.chan)
>                 return -ENODEV;
>
> +       chan = host->dma.chan;
> +       host->data_chan = chan;
> +
>         if (data->flags & MMC_DATA_READ) {
>                 host->dma_conf.direction = slave_dirn = DMA_DEV_TO_MEM;
>                 maxburst = atmci_convert_chksize(host,
> --
> 2.35.3
>