MMC_READ_SINGLE_BLOCK
opcode = MMC_READ_SINGLE_BLOCK;
cmd.opcode = MMC_READ_SINGLE_BLOCK;
case MMC_READ_SINGLE_BLOCK:
case MMC_READ_SINGLE_BLOCK:
case MMC_READ_SINGLE_BLOCK:
if (req->cmd->opcode == MMC_READ_SINGLE_BLOCK ||