I built a rc5-mmotm kernel, and set CONFIG_HID_COMPAT=3Dy, but then found=

that I didn't actually *need* any of quirks files that tries to load, so
those all got set to 'n'.

The resulting kernel would get this far (using a HID_COMPAT=3Dn kernel's =
dmesg
and annotating, I couldn't get netconsole) and then hang while still runn=
ing
off the initrd:

=5B    1.665167=5D usb 1-8: New USB device found, idVendor=3D413c, idProd=
uct=3D0058
=5B    1.678083=5D usb 1-8: New USB device strings: Mfr=3D0, Product=3D0,=
 SerialNumber=3D0
=5B    1.753101=5D usb 1-8.1: new low speed USB device using ehci_hcd and=
 address 5
=5B    1.842008=5D usb 1-8.1: configuration =231 chosen from 1 choice
=5B    1.869343=5D usb 1-8.1: New USB device found, idVendor=3D045e, idPr=
oduct=3D0023
=5B    1.882267=5D usb 1-8.1: New USB device strings: Mfr=3D1, Product=3D=
2, SerialNumber=3D0
=5B    1.895189=5D usb 1-8.1: Product: Microsoft Trackball Optical=C2=AE
=5B    1.908056=5D usb 1-8.1: Manufacturer: Microsoft

(the next line would make it to the console)

=5B    1.926685=5D input: Microsoft Microsoft Trackball Optical=C2=AE as =
/devices/pci000:00/0000:00:1d.7/usb1/1-8/1-8.1/1-8.1:1.0/input/input1
=5B    1.945217=5D generic-usb 0003:045E:0023.0001: input,hidraw0: USB HI=
D v1.00 Mouse =5BMicrosoft Microsoft Trackball Optical=C2=AE=5D on usb-00=
00:00:1d.7-8.1/input0
=5B    1.959193=5D usbcore: registered new interface driver usbhid
=5B    1.973037=5D usbhid: v2.6:USB HID core driver

(the following line would not)
=5B    1.987014=5D Advanced Linux Sound Architecture Driver Version 1.0.1=
8rc1.

Poking around with sysrq-T would show a modprobe process running and not
making any progress, just hung waiting for something.  I can go get the
traceback if needed.

This ring any bells?