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

Lu Y.B. yangbo.lu at freescale.com
Thu May 14 16:29:25 AEST 2015



> -----Original Message-----
> From: Wood Scott-B07421
> Sent: Thursday, May 14, 2015 12:37 AM
> To: Lu Yangbo-B47093
> Cc: linuxppc-dev at lists.ozlabs.org; linux-kernel at vger.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 at freescale.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.
Ok, thanks.
> 
> Given that you need to modify the device tree for this, why not just use
> SVR?
The drivers/mmc/host/sdhci-pltfm.c is not only used by freescale platform. So we couldn’t to use SVR here.
Thanks. 


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