This article helps device driver developers test the interrupt service routine as much as possible by simulating the various interrupts.
本文通过模拟各种中断，尽可能地帮助设备驱动程序开发人员测试中断服务例程。
2
And finally, the driver is tightly coupled with various APIs and applications, and you may have to debug a device driver where interrupt losses and out-of-sequence interrupts happen.
最后，驱动程序与API和应用程序是紧耦合的，需要调试设备驱动程序在中断丢失和乱序发生时的情况。
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If an interrupt keeps coming in and there is no registered handler for that device (for instance, all drivers return IRQ_NONE), then the kernel can block interrupts from that device.