Message-id: <52175BFB.2070405@samsung.com>
Date: Fri, 23 Aug 2013 21:56:27 +0900
From: Jaehoon Chung <jh80.chung@samsung.com>
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To: Doug Anderson <dianders@chromium.org>
Cc: Chris Ball <cjb@laptop.org>, Seungwon Jeon <tgih.jun@samsung.com>,
        James Hogan <james.hogan@imgtec.com>,
        Grant Grundler <grundler@chromium.org>,
        Alim Akhtar <alim.akhtar@samsung.com>,
        Abhilash Kesavan <a.kesavan@samsung.com>,
        Tomasz Figa <tomasz.figa@gmail.com>, Olof Johansson <olof@lixom.net>,
        linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 3/3] mmc: dw_mmc: Set timeout to max upon resume
References: <1377188348-3418-1-git-send-email-dianders@chromium.org>
 <1377188348-3418-4-git-send-email-dianders@chromium.org>
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Acked-by: Jaehoon Chung <jh80.chung@samsung.com>

On 08/23/2013 01:19 AM, Doug Anderson wrote:
> The TMOUT register is initted to 0xffffffff at probe time but isn't
> initted after suspend/resume.  Add an init of this value.
> 
> No problems were observed without this (it will also get initted in
> __dw_mci_start_request if there is data to send), but it makes the
> register dump before and after suspend cleaner.
> 
> Signed-off-by: Doug Anderson <dianders@chromium.org>
> Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
> Reviewed-by: Tomasz Figa <t.figa@samsung.com>
> ---
> Changes in v6: None
> Changes in v5: None
> Changes in v4: None
> Changes in v3: None
> Changes in v2: None
> 
>  drivers/mmc/host/dw_mmc.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
> index f6c7545..6a9a846 100644
> --- a/drivers/mmc/host/dw_mmc.c
> +++ b/drivers/mmc/host/dw_mmc.c
> @@ -2506,6 +2506,9 @@ int dw_mci_resume(struct dw_mci *host)
>  	/* Restore the old value at FIFOTH register */
>  	mci_writel(host, FIFOTH, host->fifoth_val);
>  
> +	/* Put in max timeout */
> +	mci_writel(host, TMOUT, 0xFFFFFFFF);
> +
>  	mci_writel(host, RINTSTS, 0xFFFFFFFF);
>  	mci_writel(host, INTMASK, SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER |
>  		   SDMMC_INT_TXDR | SDMMC_INT_RXDR |
> 

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