Re: [RFC PATCH 1/2] mmc: Update sdhci tune function to return errors

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On Mon, 27 Jan 2025 at 23:40, Erick Shepherd <erick.shepherd@xxxxxx> wrote:
>
> Updates the sdhci_execute_tuning function to return the error code
> that was returned by the __sdhci_execute_tuning function.
> Previously this code was only stored in host->tuning_err and not
> actually returned.
>
> Signed-off-by: Erick Shepherd <erick.shepherd@xxxxxx>
> ---
>  drivers/mmc/host/sdhci.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> index f4a7733a8ad2..b35b8917fa1e 100644
> --- a/drivers/mmc/host/sdhci.c
> +++ b/drivers/mmc/host/sdhci.c
> @@ -2967,7 +2967,8 @@ int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
>
>         sdhci_start_tuning(host);
>
> -       host->tuning_err = __sdhci_execute_tuning(host, opcode);
> +       err = __sdhci_execute_tuning(host, opcode);
> +       host->tuning_err = err;

Hmm, this code was deliberately not returning an error in this path,
so I am pretty sure things will break with this change.

Anyway, please re-submit and add Adrian (the sdhci maintainer) and
possibly a couple other contributors that have been working with
tunings for host drivers. We need their feedback on this.

>
>         sdhci_end_tuning(host);
>  out:
> --
> 2.43.0
>

Kind regards
Uffe




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