From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matt Fleming <matt@console-pimps.org>
Subject: Re: [PATCH 2/2] sdhci: disable MMC_CAP_NEEDS_POLL in nonremovable
	case
Date: Wed, 15 Sep 2010 16:11:42 +0100
Message-ID: <20100915151142.GB21538@console-pimps.org>
References: <4d1a88f196fa7e7eaf4c4a4af13d91ec81fb084e.1283003070.git.matt@console-pimps.org> <7e892c443f11d51a30029ddfeef27af09a9a970d.1283003070.git.matt@console-pimps.org> <4C7F65A1.60105@samsung.com> <20100902091424.GA12456@console-pimps.org> <4C86E672.1030807@samsung.com>
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To: Jaehoon Chung <jh80.chung@samsung.com>
Cc: linux-mmc@vger.kernel.org, Kyungmin Park <kyungmin.park@samsung.com>, Marek Szyprowski <m.szyprowski@samsung.com>, Andrew Morton <akpm@linux-foundation.org>, Ben Dooks <ben-linux@fluff.org>, Ben Hutchings <ben@decadent.org.uk>, Yunpeng Gao <yunpeng.gao@intel.com>

On Wed, Sep 08, 2010 at 10:27:14AM +0900, Jaehoon Chung wrote:
> Matt Fleming wrote:
> > On Thu, Sep 02, 2010 at 05:51:45PM +0900, Jaehoon Chung wrote:
> >> Matt Fleming wrote:
> >>> From: Jaehoon Chung <jh80.chung@samsung.com>
> >>>
> >>> If controller use SDHCI_QUIRK_BROKEN_CARD_DETECTION quirk,
> >>> controller need always polling detect
> >>>
> >>> In this case, always generated interrupt.Because controller checked card status.
> >>> I think that is not efficiently.
> >>>
> >>> But if card is nonremovable, we need not always polling.
> >>> So i added the check-point which is nonremovable or not
> >>>
> >>>  Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
> >>> ---
> >>>  drivers/mmc/host/sdhci.c |    5 +++--
> >>>  1 files changed, 3 insertions(+), 2 deletions(-)
> >>>
> >>> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> >>> index f6be963..3111859 100644
> >>> --- a/drivers/mmc/host/sdhci.c
> >>> +++ b/drivers/mmc/host/sdhci.c
> >>> @@ -1827,8 +1827,9 @@ int sdhci_add_host(struct sdhci_host *host)
> >>>  	if (caps & SDHCI_CAN_DO_HISPD)
> >>>  		mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
> >>>  
> >>> -	if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
> >>> -		mmc->caps |= MMC_CAP_NEEDS_POLL;
> >>> +	if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) &&
> >>> +		!mmc_card_is_removable(mmc))
> >>> +			mmc->caps |= MMC_CAP_NEEDS_POLL;
> >>>  
> >>>  	mmc->ocr_avail = 0;
> >>>  	if (caps & SDHCI_CAN_VDD_330)
> >>>   
> >> !mmc_card_is_removable(mmc)  is right?
> >> i think that is mmc_card_is_removable..
> >> because when card is removable, host controller needs polling.
> >>
> >> +	if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) &&
> >> +		*mmc_card_is_removable(mmc))*
> >> +			mmc->caps |= MMC_CAP_NEEDS_POLL;
> >>
> > 
> > Sorry, I messed up the logic here. You're completely correct.
> > 
> > With this change and patch 2/2 does your controller function
> > correctly?
> > 
> yes. i changed and applied this patch, then i tested in my controller.
> it's working well.

Chris, are you OK to pick this up (including Jaehoon's change)? Or
would you prefer me to resubmit?