On Tue, 26 Jul 2005, Michel Bouissou wrote: > Le Lundi 25 Juillet 2005 22:44, Alan Stern a écrit : > > > > Now that's strange. When you plug the high-speed device into the > > integrated ports, which IRQ counter changes? Since nothing is using IRQ > > 21, it should be disabled and its counter should remain constant. Does > > this mean the interrupts show up on IRQ 19 (used by ehci-hcd), or do they > > not show up at all (i.e., is the USB connection just being polled)? > > I assume it's IRQ 19. > > cat /proc/interrupts doesn't show IRQ21 at all when uhci isn't loaded.
As it shouldn't, since nothing is supposed to be using that IRQ. > IRQ 19 being shared with 4 IDE controllers that controls my hard drives, > that's hard to isolate interrupts counts due to USB activity from interrupts > counts due to disks activity... I was afraid you'd say that... Natalie, that's all I can think of. Now it's up to you to invent a patch Michel can try out, to show just where the IO-APIC code is going wrong. Alan Stern - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
