tp-smapi crashes 2.6.38 kernel

I can't boot with the tp-smapi module installed because when hdapsd starts, the kernel panics. Please see the attached picture for a trace. I can boot in recovery mode, i.e. not start hdapsd. I can fully boot when I remove tp-smapi.

It worked on the <2.6.38 kernel though.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.38-2-generic 2.6.38-2.29
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-2.29-generic 2.6.38-rc3
Uname: Linux 2.6.38-2-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: muelli 2835 F.... pulseaudio
CRDA:
 country DE:
  (2400 - 2483 @ 40), (N/A, 20)
  (5150 - 5350 @ 40), (N/A, 20), NO-OUTDOOR, DFS
  (5470 - 5725 @ 40), (N/A, 26), NO-OUTDOOR, DFS
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf8220000 irq 46'
   Mixer name : 'Analog Devices AD1984'
   Components : 'HDA:11d41984,17aa20d6,00100400'
   Controls : 31
   Simple ctrls : 19
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7MHT25WW-1.03'
   Mixer name : 'ThinkPad EC 7MHT25WW-1.03'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Fri Feb 11 12:15:00 2011
HibernationDevice: #RESUME=UUID=5273fb39-2d17-4d61-bc89-2c1b6efa1db3
MachineType: LENOVO 766636G
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/cryptroot source=UUID=9c3d5596-27c6-4fd5-bfcd-fa8eef6f1230 ro vdso32=0 quiet splash crashkernel=384M-2G:64M,2G-:128M
RelatedPackageVersions: linux-firmware 1.38.3
SourcePackage: linux
WpaSupplicantLog:

dmi.bios.date: 03/12/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7NETC0WW (2.20 )
dmi.board.name: 766636G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn766636G:pvrThinkPadX61:rvnLENOVO:rn766636G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 766636G
dmi.product.version: ThinkPad X61
dmi.sys.vendor: LENOVO