lkml.org 
[lkml]   [2001]   [Dec]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: pci_enable_device reports IRQ routing conflict
On Mon, 17 Dec 2001, Kevin Curtis wrote:

> However when I call pci_enable_device for the second card I get the
> following kernel log message:
>
> Dec 17 15:06:37 minion kernel: IRQ routing conflict for 00:0b.0, have irq 9,
> want irq 5

This means that config space (supposedly set up by the BIOS) reports IRQ 9
for the device, but the IRQ router really routes it to IRQ 5.

> The call didn't return an error, so I assume this was a non-fatal.

Well, the kernel currently ignores its knowledge about the router and
trusts the BIOS. Which most likely means that the IRQ won't work.

(Note that in general you should access dev->irq only after calling
pci_enable_device())

> Has anyone got any ideas where to look to debug this?

#define DEBUG

in arch/i386/kernel/pci-i386.h will give some debugging output on the next
boot, which should help.

--Kai



-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:14    [W:2.504 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site