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SubjectRe: PROBLEM: module a100u2w (SCSI, Initio) on ppc
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On Fri, 11 Jul 2008 22:09:01 -0700
Andrew Morton <akpm@linux-foundation.org> wrote:

> (cc linux-scsi)
>
> On Sat, 12 Jul 2008 13:30:41 +1000 Stephen Harker <s.harker@adfa.edu.au> wrote:
>
> > The SCSI Initio a100u2w driver compiles as a module, loads, but
> > hangs on a powerpc machine.
> >
> > I am running linux (YellowDog 5.0) on a PowerMac 7600. I am using
> > self-compiled kernels. The initio a100u2w card runs successfully
> > under Mac OSX and OS9. In the past when I tried the a100u2w module
> > under kernel 2.4 and early 2.6 it would hang for at least 30 minutes
> > (in the end I rebooted the machine).
> >
> > I thought I would try again recently using 2.6.23.14 and 2.6.25.4
> > kernels. This was more successful in that the machine did not hang
> > seemingly forever. However, the module seems to fail in
> > initialisation and no drive partitions are seen/mounted. I tried
> > removing the module (rmmod), the reloading it (modprobe) and similar
> > issues are noted. Output from dmesg shows the problems. The
> > following is the output from dmesg under 2.6.25.4, look for scsi2 and
> > initio and inia100. I am afraid that I am away from home at present
> > and don't have all the information that may be desirable. I hope the
> > following is adequate. The kernel and system run well except for this
> > one module.

Seems that this driver has some bugs on big endian architectures
(though I've not looked at the patch):

http://marc.info/?l=linux-scsi&m=121613124207253&w=2


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