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authorPierre Ossman <drzeus-list@cx.rmk.(none)>2005-05-21 10:27:02 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-05-21 10:27:02 +0100
commit912490db699d83cb3d03570b63df7448677a3f56 (patch)
treee2e45ad64584dfa9dbff212a2ba3e884b2bbca43 /drivers/mmc
parent9636273dae265b9354b861b373cd43cd76a6d0fe (diff)
downloadop-kernel-dev-912490db699d83cb3d03570b63df7448677a3f56.zip
op-kernel-dev-912490db699d83cb3d03570b63df7448677a3f56.tar.gz
[PATCH] MMC: Proper MMC command classes support
Defines for the different command classes as defined in the MMC and SD specifications. Removes the check for high command classes and instead checks that the command classes needed are present. Previous solution killed forward compatibility at no apparent gain. Signed-of-by: Pierre Ossman
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/mmc_block.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c
index b5b4a7b1..d4eee99 100644
--- a/drivers/mmc/mmc_block.c
+++ b/drivers/mmc/mmc_block.c
@@ -383,7 +383,10 @@ static int mmc_blk_probe(struct mmc_card *card)
struct mmc_blk_data *md;
int err;
- if (card->csd.cmdclass & ~0x1ff)
+ /*
+ * Check that the card supports the command class(es) we need.
+ */
+ if (!(card->csd.cmdclass & CCC_BLOCK_READ))
return -ENODEV;
if (card->csd.read_blkbits < 9) {
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