Messages in this thread | | | Date | Fri, 23 May 2008 11:32:32 +0200 | From | "Kim Hansen" <> | Subject | Re: tifm_7xx1: SD card is ignored |
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On Wed, May 21, 2008 at 2:21 PM, Pierre Ossman <drzeus@drzeus.cx> wrote: > On Wed, 7 May 2008 18:50:54 +0200 > "Kim Hansen" <kimhanse@gmail.com> wrote: > >> Now it just looks like it sometimes work and other times don't, on >> some kernels it works on 80% inserts and on other it only works on 5%. >> This means that the problem most likely has not been fixed between >> 2.6.24 and 2.6.25, it was just a coincidence that it worked on on and >> not the other the first few times I tested it. > > I missed the start of this, but I assume it is just the one card that > exhibits this craziness?
I can reproduce it on 3 different cards: SD 512MB, SD 4GB, MMC 64kB.
>> I have captured some logs now, there is logs of a successful insert >> and remove, and of an unsuccessful. >> >> Successful insert: 16:18:50 remove: 16:20:26 >> Unsuccessful insert: 16:21:38 remove: 16:21:47 >> >> The log can be found at: http://i9.dk/~kim/mmc-log.txt.bz2 >> >> This is the part from the unsuccessful insert: > > *snip* > >> sdhci [sdhci_irq()]: *** sdhci:slot0 got interrupt: 0x00000001 >> mmc0: req done (CMD5): 0: ffffffff 00000000 00000000 00000000 > > What can I say, the card thinks it's an SDIO card. :) > > The question is why. Might be some shoddy wiring between the card and > the controller that causes some unlucky misinterpretations. Might also > be that the card needs some increased delay to function correctly. Try > adding: > > msleep(500); > > to mmc_rescan() in drivers/mmc/core/core.c. Put it right after > mmc_power_up().
I will try that.
-- Kim Hansen Vadgårdsvej 3, 2.tv 2860 Søborg Fastnet: 3956 2437 -- Mobil: 3091 2437 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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