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path: root/drivers/mmc/mmc_block.c
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Diffstat (limited to 'drivers/mmc/mmc_block.c')
-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 b5b4a7b11903..d4eee99c2bf6 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) {