Repeated OSEVENT_WAIT_TIMEOUT errors

I have a Compaq nw9440 EZ901AA#ABA laptop with a HSF modem in it. Looking at
my dmesg I see the following, and a lot of it:

[  123.485000] cnxthsf_OsEventWaitTime(dedf73e0/HDA CodecUnsolicitedmessage,
40): returning OSEVENT_WAIT_TIMEOUT

This occurs both at driver initialization and when I dial up, but at no
other time.

When I first installed the driver it was killing my volume control. I did
some searches and it appears this was a stack size issue. I applied the
patch to the ubuntu kernel sources (I am on Feisty) and am now using 16k
stacks... or at least, I enabled that option. I do see in the dmesg that
both CPUs (core duo) say "irqstacks". That would indicate to me that it's
patched and enabled properly. But anyway.

when I ran the hsfconfig --dumpdiag the volume control(s) (I also run
gkrellm with volume control) died again. But looking at the produced file
(attached, I hope) it seems that they were killed by dumpdiag? So perhaps
THAT was intended.

I have deleted license information where appropriate; I am not having
licensing/speed problems. Is it really necessary for dumpdiag to put that
information in the file by default?

Anyway, I know there's no current official solution to the problem, but I'm
willing to test new patches etc. I have a nice fast machine (who doesn't
these days? but anyway) so I don't mind doing repeated builds etc. I don't
have much of a net connection (or why would I care so much about this
driver) but these are small files anyway.

My kernel config is pretty much default from the Ubuntu feisty
2.6.20-16except I turned off some of the driver modules which are
useless to me (like
some macbook stuff.) I didn't enable or disable anything creepy.


root@agamemnon:~# hsfconfig --info
Conexant HSF softmodem driver, version 7.68.00.01full

...

Note: kernel module snd-via82xx-modem overridden by hsfmc97via
Note: kernel module snd-intel8x0m overridden by hsfmc97ich hsfmc97sis
Note: kernel module snd-atiixp-modem overridden by hsfmc97ati

Current parameters: ("hsfconfig --info")

Config for modem unit 0: /dev/ttySHSF0
        Device instance: 0-HDA-14f12bfa:103c309f-1
        HW revision    : SSD=31 LSD=0x11
        HW profile name: hsfhda
        Registration ID: <deleted>
        License owner  : [email protected]
        License key    : <deleted>
        License status : OK
        Current region : USA (T.35 code: 00B5)

The /dev/modem alias (symlink) points to ttySHSF0

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