cannot load snd-powermac on 2.6.1

[Cedric Pradalier <cedric.pradalier@inrialpes.fr>]

Package: kernel-image-2.6.8-powerpc
Version: 2.6.8-11
Severity: normal

Passing from 2.6.8-8 to 2.6.8-11, snd-powermac cannot load anylonger on
ibook2.2. Syslog output is : 
Mar 27 00:14:05 ceruse kernel: pmac: can't request resource 0!
Mar 27 00:14:05 ceruse kernel: no PMac soundchip found
Mar 27 00:14:05 ceruse modprobe: FATAL: Error inserting snd_powermac
(/lib/modules/2.6.8-powerpc/kernel/sound/ppc/snd-powermac.ko): No such device  Mar 27
00:14:05 ceruse modprobe: FATAL: Error running install command for snd_powermac 

For reference, when loading dmasound-pmac: I got 
Mar 27 00:13:38 ceruse kernel: tas driver [TAS3004 driver V 0.3])
Mar 27 00:13:38 ceruse kernel: using i2c address: 0x35 from device-tree
Mar 27 00:13:38 ceruse kernel: Audio jack unplugged, enabling speakers.
Mar 27 00:13:38 ceruse kernel: AE-Init snapper mixer
Mar 27 00:13:38 ceruse kernel: PowerMac Snapper  DMA sound driver rev 016 installed
Mar 27 00:13:38 ceruse kernel: Core driver edition 01.06 : PowerMac Built-in Sound driver
edition 00.07 Mar 27 00:13:38 ceruse kernel: Write will use    4 fragments of   32768
bytes as default Mar 27 00:13:38 ceruse kernel: Read  will use    4 fragments of   32768
bytes as default

Sound was configured and worked ok, even micro in gnomemeeting before.

lsmod gives: 
ceruse:~# lsmod | egrep "(snd|sound)"
snd_pcm_oss            68136  0 
snd_pcm               119800  1 snd_pcm_oss
snd_page_alloc         13480  1 snd_pcm
snd_timer              29348  1 snd_pcm
dmasound_pmac          94852  0 
snd_mixer_oss          23264  1 snd_pcm_oss
snd                    67800  4 snd_pcm_oss,snd_pcm,snd_timer,snd_mixer_oss
dmasound_core          22256  1 dmasound_pmac
soundcore              11812  2 snd,dmasound_core

Thanks for any advice. I'll be glad to conduct any required test if needed.

Cedric

-- System Information:
Debian Release: 3.1
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: powerpc (ppc)
Kernel: Linux 2.6.8-powerpc
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C)

Versions of packages kernel-image-2.6.8-powerpc depends on:
ii  initrd-tools                  0.1.77     tools to create initrd image for p
ii  mkvmlinuz                     13         create a kernel to boot a PowerPC 
ii  module-init-tools             3.2-pre1-2 tools for managing Linux kernel mo

-- no debconf information