linux-kernel - Re: [PATCH V1 1/2] mmc: core: Introduce new flag to force hardware reset

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Date:   Fri, 3 Jun 2022 08:33:46 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Sarthak Garg <quic_sartgarg@...cinc.com>, ulf.hansson@...aro.org
Cc:     linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, quic_kamasali@...cinc.com,
        quic_rampraka@...cinc.com, quic_pragalla@...cinc.com,
        quic_sayalil@...cinc.com, Jens Axboe <axboe@...nel.dk>,
        Avri Altman <Avri.Altman@....com>,
        Chaitanya Kulkarni <kch@...dia.com>,
        Christian Löhle <CLoehle@...erstone.com>,
        Bean Huo <beanhuo@...ron.com>,
        Vincent Whitchurch <vincent.whitchurch@...s.com>,
        Dmitry Osipenko <digetx@...il.com>,
        Stephen Boyd <swboyd@...omium.org>
Subject: Re: [PATCH V1 1/2] mmc: core: Introduce new flag to force hardware
 reset

On 3/06/22 08:15, Sarthak Garg wrote:
> Introduce new flag cqe_recovery_reset_always to allow vendors to force
> hardware reset during cqe recovery.
> 
> Signed-off-by: Sarthak Garg <quic_sartgarg@...cinc.com>

You should re-base on top of "mmc: block: Fix CQE recovery reset success"

Also you may want to consider fixes / stable tags.

Otherwise, for both patches:

Acked-by: Adrian Hunter <adrian.hunter@...el.com>

> ---
>  drivers/mmc/core/block.c | 2 +-
>  include/linux/mmc/host.h | 1 +
>  2 files changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
> index 1259ca22d625..496cdd8a2999 100644
> --- a/drivers/mmc/core/block.c
> +++ b/drivers/mmc/core/block.c
> @@ -1497,7 +1497,7 @@ void mmc_blk_cqe_recovery(struct mmc_queue *mq)
>  	pr_debug("%s: CQE recovery start\n", mmc_hostname(host));
>  
>  	err = mmc_cqe_recovery(host);
> -	if (err)
> +	if (err || host->cqe_recovery_reset_always)
>  		mmc_blk_reset(mq->blkdata, host, MMC_BLK_CQE_RECOVERY);
>  	else
>  		mmc_blk_reset_success(mq->blkdata, MMC_BLK_CQE_RECOVERY);
> diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
> index c193c50ccd78..3e2fe950b4ec 100644
> --- a/include/linux/mmc/host.h
> +++ b/include/linux/mmc/host.h
> @@ -492,6 +492,7 @@ struct mmc_host {
>  	int			cqe_qdepth;
>  	bool			cqe_enabled;
>  	bool			cqe_on;
> +	bool			cqe_recovery_reset_always;
>  
>  	/* Inline encryption support */
>  #ifdef CONFIG_MMC_CRYPTO