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 <[email protected]>
This patch only checks for CCC_BLOCK_READ even though CCC_BLOCK_WRITE is
also needed. My intention is to make the card read-only if the write
command class is unavailable. But such a patch will conflict with the SD
patches previously submitted. So I need to know which version should be
used as a base.
Index: linux-wbsd/drivers/mmc/mmc_block.c
===================================================================
--- linux-wbsd/drivers/mmc/mmc_block.c (revision 134)
+++ linux-wbsd/drivers/mmc/mmc_block.c (working copy)
@@ -443,7 +443,10 @@
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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