Kernel oops with asus_acpi module

["Hanno Böck" <mail@hboeck.de>]

Matthias Hentges has postet this a while ago to the acpi4asus-list:
http://sourceforge.net/mailarchive/forum.php?thread_id=7214924&forum_id=33295

I have a Samsung P30. The problem happens on both rc and mm-kernels at the 
moment.
I hope this can be fixed before 2.6.12.

The asus_acpi module freezes the system on boot if compiled into the kernel.

If loaded as a module, I get this error:

Asus Laptop ACPI Extras version 0.29
Unable to handle kernel NULL pointer dereference at virtual address 00000000
 printing eip:
e19e9391
*pde = 00000000
Oops: 0000 [#1]
PREEMPT
Modules linked in: asus_acpi eth1394 ipw2100 ohci1394 ieee1394 yenta_socket 
rsrc_nonstatic pcmcia_core ehci_hcd uhci_hcd usbcore
CPU:    0
EIP:    0060:[<e19e9391>]    Not tainted VLI
EFLAGS: 00210203   (2.6.12-rc5-mm2)
EIP is at asus_hotk_get_info+0x1aa/0x79a [asus_acpi]
eax: 00000000   ebx: dfe0d000   ecx: 00000002   edx: 00000003
esi: 00000000   edi: e19fca60   ebp: d7e9c800   esp: dae19ec0
ds: 007b   es: 007b   ss: 0068
Process modprobe (pid: 12174, threadinfo=dae18000 task=d13bf0b0)
Stack: 00000000 00200296 c011c497 00000000 ffffffd8 dfe0d000 00000000 00000000
       c05a9c88 c011c273 dae19f6c dfc37c3c 00000000 c0294036 00000000 00000000
       00000000 dae19f54 00200246 0000002b 00000300 0000030c 00000000 00000000
Call Trace:
 [<c011c497>] release_console_sem+0xe7/0x110
 [<c011c273>] vprintk+0x1f3/0x2b0
 [<c0294036>] sub_alloc+0xb6/0x1b0
 [<e19e9a3f>] asus_hotk_add+0x8b/0x143 [asus_acpi]
 [<c02e0f01>] acpi_bus_driver_init+0x29/0x50
 [<c02e0fbc>] acpi_driver_attach+0x59/0x9d
 [<e19e9b41>] asus_acpi_init+0x4a/0x72 [asus_acpi]
 [<c0138212>] sys_init_module+0xc2/0x200
 [<c01030d7>] sysenter_past_esp+0x54/0x75
Code: e1 e8 f4 2c 73 de 5e 5f a1 10 eb 9f e1 ba 03 00 00 00 bf 60 ca 9f e1 89 
d1 c7 40 14 12 00 00 00 8b 45 08 89 04 24 89 c6 49 78 08 <ac> ae 75 08 84 c0 
75 f5 31 c0 eb 04 19 c0 0c 01 85 c0 75 11 a1


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