lkml.org 
[lkml]   [2008]   [Mar]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: nobody cared about IRQ 19 (firewire, on a HP 2510p notebook)
On Sun, 30 Mar 2008, Stefan Richter wrote:
> I tend to believe it is a problem to be addressed in the x86 platform support,
> not a driver problem.

Depends. It might be unfixable.

> I Cc'd some random x86 folk... To rehash the issue:
>
> - Controller: Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 04)
> Board: PM965/GM965/GL960 based
> The R5C832 is known to work with ohci1394 according to
> http://hardware4linux.info/component/14348/ and other reports.
>
> - Martin also saw it happen with Linux 2.6.22.
>
> - firewire-ohci + firewire-core as well as ohci1394 + ieee1394
> appear to initialize the controller on Martin's laptop just fine.
> Among else this means that a number of register reads and writes
> succeed.
>
> - Some time later, without having actually used the FireWire
> controller, "irq 19: nobody cared"/ "Disabling IRQ #19" occurs.
> AFAIU the code, this is apparently because firewire-ohci's or
> ohci1394's IRQ handler was called repeatedly but got either 0 or ~0
> when reading the chip's interrupt event register.

Can we please have a full boot log (dmesg) and the output of /proc/interrupts and "lspci -vvv"

Thanks,
tglx


\
 
 \ /
  Last update: 2008-03-30 22:13    [W:0.085 / U:0.748 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site