Driver-specific data structure

• Each « framework » defines a structure that a device driver must register to be recognized as a device in this framework

• uart_port for serial port, netdev for network devices, fb_info for framebuffers, etc.

• In addition to this structure, the driver usually needs to store additional informations about its device

• This is typically done

• By subclassing the « framework » structure
• Or by storing a reference to the « framework » structure