Negative module use count for usb/acm

[Jamie Lokier]

This is kernel 2.4.2, as kernel 2.4.3 doesn't seem to work with pppd's
chat program.

Spot the incongruity below!  (It will go to -4 when I disconnect).

This is on a laptop, which is suspended from time to time.  Maybe this
gives a clue as to what's causing the fault.

enjoy,
-- Jamie

[jamie@thefinal jamie]$ /sbin/lsmod                                            
Module                  Size  Used by
ppp_deflate            41440   0 (autoclean)
bsd_comp                4208   0 (autoclean)
ppp_async               6416   1 (autoclean)
acm                     5184  -3 (autoclean)
ppp_generic            12928   2 (autoclean) [ppp_deflate bsd_comp ppp_async]
slhc                    4816   0 (autoclean) [ppp_generic]
uhci                   18832   0 (autoclean) (unused)
usbcore                32208   0 (autoclean) [acm uhci]
autofs                 11008   1 (autoclean)
maestro                26976   0 (unused)
soundcore               3888   2 [maestro]