Hi Huang. Thanks for your comments. but this is not my hardware issue. :) But i found out your patch "[PATCH 3/3] SDHC/MMC: add f_min to mmc_power_on" I think that related with this problem. I will test then share the results Best regards, Jaehoon Chung Huang Changming-R66093 wrote: > I don't see this. > Maybe that is your hardware issue. > > Thanks and Best Regards > Jerry Huang > > >> -----Original Message----- >> From: linux-mmc-owner@xxxxxxxxxxxxxxx [mailto:linux-mmc- >> owner@xxxxxxxxxxxxxxx] On Behalf Of Jaehoon Chung >> Sent: Friday, May 06, 2011 5:39 PM >> To: linux-mmc@xxxxxxxxxxxxxxx >> Cc: Chris Ball; Kyungmin Park >> Subject: [PATCH] mmc: fixed wrong SD card detection >> >> This patch added mmc_power_off after mmc_attach_sd() >> >> i found that didn't detect the second card insert.(using SDHCI) you can >> see the below log. >> >> i want to know that somebody know this issue... >> >> ->first card inserted (correct card detect) >> # mmc1: new SDHC card at address e624 >> mmcblk1: mmc1:e624 SU04G 3.69 GiB >> mmcblk1: p1 >> # >> # mmc1: card e624 removed >> -> second card inserted >> mmc1: error -110 whilst initialising SD card >> mmc1: Card removed during transfer! >> mmc1: Resetting controller. >> -> third card inserted >> mmc1: new SDHC card at address e624 >> mmcblk1: mmc1:e624 SU04G 3.69 GiB >> mmcblk1: p1 >> >> I added mmc_power_off() after only mmc_attach_sd(). >> >> Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx> >> Signed-off-by: kyungmin Park <kyungmin.park@xxxxxxxxxxx> >> --- >> drivers/mmc/core/core.c | 4 +++- >> 1 files changed, 3 insertions(+), 1 deletions(-) >> >> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index >> 1dbc185..d5d8ac0 100644 >> --- a/drivers/mmc/core/core.c >> +++ b/drivers/mmc/core/core.c >> @@ -1522,8 +1522,10 @@ static int mmc_rescan_try_freq(struct mmc_host >> *host, unsigned freq) >> /* Order's important: probe SDIO, then SD, then MMC */ >> if (!mmc_attach_sdio(host)) >> return 0; >> - if (!mmc_attach_sd(host)) >> + if (!mmc_attach_sd(host)) { >> + mmc_power_off(host); >> return 0; >> + } >> if (!mmc_attach_mmc(host)) >> return 0; >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at >> http://vger.kernel.org/majordomo-info.html > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
