http://bugzilla.kernel.org/show_bug.cgi?id=2874
------- Comment #58 from [EMAIL PROTECTED] 2007-12-17 16:11 -------
(In reply to comment #57)
> d. When the patch in comment #32 is applied,the interrupt of USB host is
> forced to be routed to the pin 19 of I/O APIC.Only acpi interrupt is
> registered
> for IRQ 9 and LNKD device is disabled by calling the _DIS method.
> But the system reports that the error message of IRQ 9 nobody cared for. The
> only explanation for this is that _DIS method can't disable the LNKD device
> and
> the interrupt pins of USB hosts are still hardrouted to IRQ 9 through LNKD
> device.
>
drivers/acpi/pci_link.c, line #583
acpi_irq_penalty[link->irq.active] += PIRQ_PENALTY_PCI_USING;
printk(PREFIX "%s [%s] enabled at IRQ %d\n",
acpi_device_name(link->device),
acpi_device_bid(link->device), link->irq.active);
this code is very old, year 2002, so maybe this code is not need it anymore and
is the root of the problem, hardrouted something with IRQ_PENALTY.
Could you take a look at those code , and see if it can be deleted.
As far as I know, you are saying that ACPI, now, find irq routing for those
device, and IIRC those code (pci_link.c) is for devices that we don't know the
irq routing.
Thanks,
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