Why kernel code/thread executing in interrupt context cannot sleep?

Question

I am reading following article by Robert Love

http://www.linuxjournal.com/article/6916

that says

\"...Let\'s discuss the fact that work queues run i

Answer 1

Even if you could put an ISR to sleep, you wouldn't want to do it. You want your ISRs to be as fast as possible to reduce the risk of missing subsequent interrupts.