On Sun, May 16, 2004 at 05:21:13PM +0200, Johannes Stezenbach wrote: > In essence, I believe something other than the saa7146 must be asserting > irq 23. Or is it possible that a bug in the PCI init stuff in > saa7146_core.c can > cause this? Any hints how we could debug this would be welcome. arch/mips/cobalt/irq.c:cobalt_irq() looks pretty suspect. It connects CAUSEF_IP7 and interrupt 23 - but the CPU's builtin count / compare interrupt already uses this bit. Sharing the timer interrupt with something else isn't impossible but seems a less than bright thing to do. Somebody with production hw to test should compare this interrupt dispatch function with old working code from 2.2 or 2.4 ... Ralf