linux-kernel - Re: [PATCH] mmc: dw_mmc: Don't print data errors

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Date:	Wed, 23 Apr 2014 09:32:36 +0530
From:	Alim Akhtar <alim.akhtar@...il.com>
To:	Doug Anderson <dianders@...omium.org>
Cc:	Seungwon Jeon <tgih.jun@...sung.com>,
	Jaehoon Chung <jh80.chung@...sung.com>,
	Yuvaraj Kumar C D <yuvaraj.cd@...sung.com>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Sonny Rao <sonnyrao@...omium.org>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>, chris@...ntf.net,
	Ulf Hansson <ulf.hansson@...aro.org>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mmc: dw_mmc: Don't print data errors

Hi Doug,

On Wed, Apr 23, 2014 at 5:21 AM, Doug Anderson <dianders@...omium.org> wrote:
> Data errors are completely expected during tuning.  Printing them out
> is confusing people looking at the kernel logs.  They see things like:
>
>  [    3.613296] dwmmc_exynos 12200000.dwmmc0: data error, status 0x00000088
>
> ...and they think something is wrong with their hardware.
>
> Remove the printouts.  We'll leave it up to a higher level to report
> about errors.
>
> Signed-off-by: Doug Anderson <dianders@...omium.org>

This looks reasonable
Reviewed-by: Alim Akhtar <alim.akhtar@...sung.com>

> ---
>  drivers/mmc/host/dw_mmc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
> index cced599..4c8d423 100644
> --- a/drivers/mmc/host/dw_mmc.c
> +++ b/drivers/mmc/host/dw_mmc.c
> @@ -1248,7 +1248,7 @@ static int dw_mci_data_complete(struct dw_mci *host, struct mmc_data *data)
>                         data->error = -EIO;
>                 }
>
> -               dev_err(host->dev, "data error, status 0x%08x\n", status);
> +               dev_dbg(host->dev, "data error, status 0x%08x\n", status);
>
>                 /*
>                  * After an error, there may be data lingering
> --
> 1.9.1.423.g4596e3a
>
> --
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-- 
Regards,
Alim
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