Re: [PATCH 01/19] mmc: atmel-mci: Keep timer enabled when queuing a next request

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On Tue, Apr 14, 2020 at 06:13:55PM +0200, Ulf Hansson wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> When atmci_request_end() is about to finish a request for one slot, there
> is a possibility that there is new request queued for another slot. If this
> turns out to be the case, the new request is started and the timer is
> re-programmed for it.
> 
> Although, a few lines below in atmci_request_end(), this timer becomes
> deleted, likely corresponding to the other recently completed request. This
> looks wrong, so let's fix it.
> 
> Cc: Ludovic Desroches <ludovic.desroches@xxxxxxxxxxxxx>
> Cc: Nicolas Ferre <nicolas.ferre@xxxxxxxxxxxxx>
> Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>

Nice catch.

Thanks

Acked-by: Ludovic Desroches <ludovic.desroches@xxxxxxxxxxxxx>

> ---
>  drivers/mmc/host/atmel-mci.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
> index aeaaa5314924..0472df8391b5 100644
> --- a/drivers/mmc/host/atmel-mci.c
> +++ b/drivers/mmc/host/atmel-mci.c
> @@ -1557,6 +1557,8 @@ static void atmci_request_end(struct atmel_mci *host, struct mmc_request *mrq)
> 
>         WARN_ON(host->cmd || host->data);
> 
> +       del_timer(&host->timer);
> +
>         /*
>          * Update the MMC clock rate if necessary. This may be
>          * necessary if set_ios() is called when a different slot is
> @@ -1583,8 +1585,6 @@ static void atmci_request_end(struct atmel_mci *host, struct mmc_request *mrq)
>                 host->state = STATE_IDLE;
>         }
> 
> -       del_timer(&host->timer);
> -
>         spin_unlock(&host->lock);
>         mmc_request_done(prev_mmc, mrq);
>         spin_lock(&host->lock);
> --
> 2.20.1
> 



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