PIIX4 ACPI device - hardwired IRQ9

Dear friends:

Please excuse my ignorance: Does the indicated line below have any other purpose apart from making me comment it and recompile the kernel to get my soundcard working? ;-)

kernel-source-2.4.26/arch/i386/kernel/pci-pc.c static void __devinit pci_fixup_piix4_acpi(struct pci_dev *d)

        /* PIIX4 ACPI device: hardwired IRQ9 */

===> d->irq = 9;

$ isapnp /etc/isapnp.conf
/etc/isapnp.conf:167 -- Fatal - resource conflict allocating IRQ9
(see pci)
/etc/isapnp.conf:167 -- Fatal - Error occurred executing request
'IRQ 9' --- further action aborted

My soundcard is a Terratec EWS64 XL. I successfully use the sam9407-1.0.4 driver after a proper isapnp configuration, i.e. comment the hardwired IRQ9 line, compile the kernel, run isapnp.

If there should be really no other purpose I recommend to comment the line, so I can use a precompiled kernel from now on. :-)

kernel-source-2.4.26/arch/i386/kernel/pci-pc.c static void __devinit pci_fixup_piix4_acpi(struct pci_dev *d)

        /* PIIX4 ACPI device: hardwired IRQ9 */
        /* d->irq = 9; */

Or maybe there is some method to deactivate hardwired irqs with boot parameters? My first experiments (without a clue about kernel internals) using kernel boot parameters like 'acpi=', 'pci=irqmask=0xMMMM' failed, though.

Please CC me, if you want me to read your reply asap.

All the best-
Torsten Scheck

The answer is simple: don't use isapnptools with 2.4 kernel, drivers should use kernel ISA PnP subsystem instead.

Unfortunately the sam9407-1.0.4 is extremely ugly piece of code and no person sane enough will touch it (for the good summ of money perhaps :)

So the real thing you need is sam9407 driver rewritten from scrath :(

Andrey Panin		| Linux and UNIX system administrator
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