MCP251XFD_SPI_INSTRUCTION_WRITE
cpu_to_be16(MCP251XFD_SPI_INSTRUCTION_WRITE),
reg = (__force unsigned short)cpu_to_be16(MCP251XFD_SPI_INSTRUCTION_WRITE | reg);
cmd->cmd = cpu_to_be16(MCP251XFD_SPI_INSTRUCTION_WRITE | addr);