CANINTE
mcp251x_write_2regs(spi, CANINTE, CANINTE_WAKIE, CANINTF_WAKIF);
mcp251x_write_2regs(spi, CANINTE, 0x00, 0x00);
mcp251x_write_reg(spi, CANINTE,
mcp251x_write_2regs(spi, CANINTE, 0x00, 0x00);