该函数初始化硬件中断和内核，使设备驱动注册事件并使能中断。

This function initializes a hardware interrupt with the kernel. This initialization enables the device driver to register an event and enable the interrupt.

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大部分的网络设备都是在初始化和加载硬件的时候被设备驱动程序自动创建。

In the majority of cases the network device is automatically created by the device driver while it is initializing and has located your hardware.

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