xiaomi-sm8450/android_kernel_xiaomi_sm8450
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mmc: remove multiwrite capability

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Relax requirements on host controllers and only require that they do not
report a transfer count than is larger than the actual one (i.e. a lower
value is okay). This is how many other parts of the kernel behaves so
upper layers should already be prepared to handle that scenario. This
gives us a performance boost on MMC cards.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Pierre Ossman
2008-07-06 01:10:27 +02:00
parent 97067d5581
commit 23af60398a
9 changed files with 29 additions and 43 deletions
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5
drivers/mmc/host/mmc_spi.c
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@@ -1252,10 +1252,7 @@ static int mmc_spi_probe(struct spi_device *spi)
mmc->ops = &mmc_spi_ops;
mmc->max_blk_size = MMC_SPI_BLOCKSIZE;
/* As long as we keep track of the number of successfully
* transmitted blocks, we're good for multiwrite.
*/
mmc->caps = MMC_CAP_SPI | MMC_CAP_MULTIWRITE;
mmc->caps = MMC_CAP_SPI;
/* SPI doesn't need the lowspeed device identification thing for
* MMC or SD cards, since it never comes up in open drain mode.