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From: "Mendez, Judith" <jm@ti.com>
To: "Diogo Ivo (Schneider Electric)" <diogo.ivo@bootlin.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Ulf Hansson <ulfh@kernel.org>
Cc: <linux-mmc@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	"Pascal EBERHARD" <pascal.eberhard@se.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	<stable@vger.kernel.org>
Subject: Re: [PATCH v2 2/4] mmc: sdhci_am654: Reset command and data lines on failed tuning
Date: Mon, 3 Aug 2026 14:28:19 -0500	[thread overview]
Message-ID: <148b2a52-152b-438c-be48-06bdb72ae35e@ti.com> (raw)
In-Reply-To: <20260803-am654-sdhci-v2-2-a5ee5be86133@bootlin.com>

Hi Diogo,

On 8/3/2026 8:47 AM, Diogo Ivo (Schneider Electric) wrote:
> The CMD/DATA reset after tuning should be performed regardless of
> whether tuning succeeded or failed, since tuning data may remain in
> the buffer in either case. Move the error return after the reset so
> that the controller is always cleaned up.
> 
> Fixes: de31f6ab68a3 ("mmc: sdhci_am654: Reset Command and Data line after tuning")
> Cc: <stable@vger.kernel.org>
> Signed-off-by: Diogo Ivo (Schneider Electric) <diogo.ivo@bootlin.com>

Reviewed-by: Judith Mendez <jm@ti.com>

> ---
> Changes in v2:
>   - No changes
> ---
>   drivers/mmc/host/sdhci_am654.c | 4 +---
>   1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c
> index 35c3efd92112..0db587e702ac 100644
> --- a/drivers/mmc/host/sdhci_am654.c
> +++ b/drivers/mmc/host/sdhci_am654.c
> @@ -442,15 +442,13 @@ static int sdhci_am654_execute_tuning(struct mmc_host *mmc, u32 opcode)
>   	struct sdhci_host *host = mmc_priv(mmc);
>   	int err = sdhci_execute_tuning(mmc, opcode);
>   
> -	if (err)
> -		return err;
>   	/*
>   	 * Tuning data remains in the buffer after tuning.
>   	 * Do a command and data reset to get rid of it
>   	 */
>   	sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
>   
> -	return 0;
> +	return err;
>   }
>   
>   static u32 sdhci_am654_cqhci_irq(struct sdhci_host *host, u32 intmask)
> 


  reply	other threads:[~2026-08-03 19:28 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-03 13:47 [PATCH v2 0/4] mmc: sdhci_am654: Fix DDR50 mode for cards without tuning support Diogo Ivo (Schneider Electric)
2026-08-03 13:47 ` [PATCH v2 1/4] mmc: sdhci_am654: Move tuning_loop to local variable Diogo Ivo (Schneider Electric)
2026-08-03 19:19   ` Mendez, Judith
2026-08-03 13:47 ` [PATCH v2 2/4] mmc: sdhci_am654: Reset command and data lines on failed tuning Diogo Ivo (Schneider Electric)
2026-08-03 19:28   ` Mendez, Judith [this message]
2026-08-03 13:47 ` [PATCH v2 3/4] mmc: sdhci_am654: Clear ITAPDLY on tuning failure Diogo Ivo (Schneider Electric)
2026-08-03 19:40   ` Mendez, Judith
2026-08-03 13:47 ` [PATCH v2 4/4] mmc: sdhci_am654: Fallback to DT-provided itap delay on DDR50 " Diogo Ivo (Schneider Electric)
2026-08-03 19:59   ` Mendez, Judith
2026-08-04  8:45     ` Diogo Ivo
2026-08-05 23:13       ` Mendez, Judith
2026-08-07  6:35         ` Adrian Hunter
2026-08-07 10:52           ` Diogo Ivo
2026-08-07  8:16 ` [PATCH v2 0/4] mmc: sdhci_am654: Fix DDR50 mode for cards without tuning support Adrian Hunter

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