linux-kernel - Re: [PATCH 02/11] mmc: core: Take into account MMC_CAP_NEED_RSP

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Message-ID: <CACRpkdYf+ak=4S0FFQ2zKRTXd7rWMPcvPnrrdtdpVnEJHuiTYQ@mail.gmail.com>
Date:   Thu, 6 May 2021 14:51:35 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Ulf Hansson <ulf.hansson@...aro.org>
Cc:     linux-mmc <linux-mmc@...r.kernel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Avri Altman <avri.altman@....com>,
        Masami Hiramatsu <masami.hiramatsu@...aro.org>,
        linux-block <linux-block@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 02/11] mmc: core: Take into account MMC_CAP_NEED_RSP_BUSY
 for eMMC HPI commands

On Tue, May 4, 2021 at 6:12 PM Ulf Hansson <ulf.hansson@...aro.org> wrote:

> In mmc_send_hpi_cmd() the host->max_busy_timeout is being validated towards
> the timeout for the eMMC HPI command, as to decide whether an R1 or R1B
> response should be used.
>
> Although, it has turned out the some host can't cope with that conversion,
> but needs R1B, which means MMC_CAP_NEED_RSP_BUSY is set for them. Let's
> take this into account, via using the common mmc_prepare_busy_cmd() when
> doing the validation, which also avoids some open coding.
>
> Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>

Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij