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mmc: increase SD write timeout for crappy cards

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It seems that some cards are slightly out of spec and occasionally
will not be able to complete a write in the alloted 250 ms [1].
Incease the timeout slightly to allow even these cards to function
properly.

[1] http://lkml.org/lkml/2008/9/23/390

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Pierre Ossman 2008-10-26 12:37:25 +01:00
parent a622cf69b8
commit 493890e75d
1 changed files with 5 additions and 1 deletions
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6
drivers/mmc/core/core.c
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@ -280,7 +280,11 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
(card->host->ios.clock / 1000); (card->host->ios.clock / 1000);
if (data->flags & MMC_DATA_WRITE) if (data->flags & MMC_DATA_WRITE)
limit_us = 250000; /*
* The limit is really 250 ms, but that is
* insufficient for some crappy cards.
*/
limit_us = 300000;
else else
limit_us = 100000; limit_us = 100000;