linux-kernel - Re: [PATCH 2/2] mmc: sdhci-pltfm: enable interrupt mode to detect card

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Date:	Wed, 13 May 2015 11:37:07 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Yangbo Lu <yangbo.lu@...escale.com>
CC:	<linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] mmc: sdhci-pltfm: enable interrupt mode to detect
 card

On Wed, 2015-05-13 at 16:20 +0800, Yangbo Lu wrote:
> Enable interrupt mode to detect card instead of polling mode
> for P1020/P4080/P5020/P5040/T1040 by removing the quirk
> SDHCI_QUIRK_BROKEN_CARD_DETECTION. This could improve data
> transferring performance and avoid the call trace caused by
> polling card status sometime.
> 
> Signed-off-by: Yangbo Lu <yangbo.lu@...escale.com>
> ---
>  drivers/mmc/host/sdhci-pltfm.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
> index c5b01d6..62f4049 100644
> --- a/drivers/mmc/host/sdhci-pltfm.c
> +++ b/drivers/mmc/host/sdhci-pltfm.c
> @@ -102,6 +102,13 @@ void sdhci_get_of_property(struct platform_device *pdev)
>  		    of_device_is_compatible(np, "fsl,mpc8536-esdhc"))
>  			host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
>  
> +		if (of_device_is_compatible(np, "fsl,p5040-esdhc") ||
> +			of_device_is_compatible(np, "fsl,p5020-esdhc") ||
> +			of_device_is_compatible(np, "fsl,p4080-esdhc") ||
> +			of_device_is_compatible(np, "fsl,p1020-esdhc") ||
> +			of_device_is_compatible(np, "fsl,t1040-esdhc"))
> +			host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;

Please don't line up continuation lines with the if-body.  All of the
"of_device_is_compatibles" should start in the same column.

Given that you need to modify the device tree for this, why not just use
SVR?

-Scott


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