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authorPierre Ossman <drzeus@drzeus.cx>2008-07-06 01:10:27 +0200
committerPierre Ossman <drzeus@drzeus.cx>2008-07-15 14:14:49 +0200
commit23af60398af2f5033e2f53665538a09f498dbc03 (patch)
treefc244139d7d6bb1a82b80cc60fae86970e60c8c5 /drivers/mmc/host/mmc_spi.c
parentwbsd: fix bad dma_addr_t conversion (diff)
downloadlinux-23af60398af2f5033e2f53665538a09f498dbc03.tar.xz
linux-23af60398af2f5033e2f53665538a09f498dbc03.zip
mmc: remove multiwrite capability
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>
Diffstat (limited to 'drivers/mmc/host/mmc_spi.c')
-rw-r--r--drivers/mmc/host/mmc_spi.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 4e82f64a96bc..41cc63360e43 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -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.