FYI PS/2 Mouse problems -- userland issue
Quoted 6 lines
[...] it needs a few improvements during 2.5: I plan to submit a patch that replaces much of the existing pc keyboard/mouse code with state machine driven code that doesn't block interrupts out for long periods of time, as well as fixing a few of the lockup issues the current driver has.
-ben
Interesting. BTW, there is a request to introduce the mouse into the Input/HID framework in the way PS/2 keyboard is now. It does not overlap too much with a fix to hardware access, but it may help to remove the multitude of broken code from userland and direct it at your super-duper-state-machine code.
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=50921
-- Pete