On Thu, Feb 10, 2005 at 02:01:08PM +0100, Olav Torheim wrote: > Right now I am working with writing an interrupt routine for my PCI > card. The interrupt receives the interrupt signal and schedules the > signal handler (the signal handler is running in user space) to run > later. > > So far, so good. But the problem is that the interrupt I'm using is > shared with another device. Is there any proper way to make my > interrupt routine find out which device caused the interrupt? I want > the interrupt routine to only schedule the signal handler when the > correct device is interrupting. Check your PCI card technical manual, the chip should have a way to tell if it had interrupts pending. If there's no interrupt pending, the interrupt wasn't for your card and you should exit the interrupt handler. Erik -- Erik Mouw J.A.K.Mouw@xxxxxxxxxxxxxx mouw@xxxxxxxxxxxx
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