>-----Original Message----- >From: linux-mmc-ow...@vger.kernel.org >[mailto:linux-mmc-ow...@vger.kernel.org] On Behalf Of Kyungmin Park >Sent: Friday, August 27, 2010 3:15 PM >To: Matt Fleming >Cc: Jaehoon Chung; linux-mmc@vger.kernel.org; Marek Szyprowski; Andrew Morton; >Ben Dooks >Subject: Re: [PATCH] sdhci: disable MMC_CAP_NEEDS_POLL in nonremovable case > >On Fri, Aug 27, 2010 at 4:09 PM, Matt Fleming <m...@console-pimps.org> wrote: >> On Fri, Aug 27, 2010 at 03:34:54PM +0900, Jaehoon Chung wrote: >>> 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.ch...@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 401527d..4bc5d3c 100644 >>> --- a/drivers/mmc/host/sdhci.c >>> +++ b/drivers/mmc/host/sdhci.c >>> @@ -1826,8 +1826,9 @@ int sdhci_add_host(struct sdhci_host *host) >>> if (caps & SDHCI_CAN_DO_HISPD) >>> mmc->caps |= MMC_CAP_SD_HIGHSPEED; >>> >>> - if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) >>> - mmc->caps |= MMC_CAP_NEEDS_POLL; >>> + if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) && >>> + !(host->mmc->caps & MMC_CAP_NONREMOVABLE)) >>> + mmc->caps |= MMC_CAP_NEEDS_POLL;
Since module parameter 'mmc_assume_removable' (defined in core.c) also controls the nonremovable attribute of the mmc/eMMC device, will it be better to also check value of 'mmc_assume_removable' here? Thanks. Regards, Yunpeng Gao -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
