linux-kernel - Re: [PATCH] mmc: host: sdhci-sprd: Set the missing MMC_CAP_WAIT_WHILE

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Message-ID: <CAPDyKFr+BRhCQd70L8hMTtq8hfq8N-Z5+PAEmJhPy-rtuP3jMA@mail.gmail.com>
Date:   Wed, 4 Mar 2020 16:34:39 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Baolin Wang <baolin.wang7@...il.com>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Orson Zhai <orsonzhai@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mmc: host: sdhci-sprd: Set the missing
 MMC_CAP_WAIT_WHILE_BUSY flag

On Mon, 24 Feb 2020 at 10:09, Baolin Wang <baolin.wang7@...il.com> wrote:
>
> The Spreadtrum host controller supports HW busy detection for I/O
> operations, which means when the host gets a transfer complete event,

I assume HW busy detection also works for R1B commands, so I am adding
that information to changelog to clarify this.

Please have a look at the next branch to see that it looks good to you.

> that always indicates the busy signal is released. Thus we can set
> the MMC_CAP_WAIT_WHILE_BUSY flag to remove some redundant software
> busy polling.
>
> Signed-off-by: Baolin Wang <baolin.wang7@...il.com>

So, applied for next, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/host/sdhci-sprd.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
> index d346223..2ab42c5 100644
> --- a/drivers/mmc/host/sdhci-sprd.c
> +++ b/drivers/mmc/host/sdhci-sprd.c
> @@ -556,7 +556,7 @@ static int sdhci_sprd_probe(struct platform_device *pdev)
>                 sdhci_sprd_voltage_switch;
>
>         host->mmc->caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
> -               MMC_CAP_ERASE | MMC_CAP_CMD23;
> +               MMC_CAP_ERASE | MMC_CAP_CMD23 | MMC_CAP_WAIT_WHILE_BUSY;
>         ret = mmc_of_parse(host->mmc);
>         if (ret)
>                 goto pltfm_free;
> --
> 1.9.1
>