kern/161043: PS/2 mouse does not work in 9.0-BETA2/-CURRENT

[Adam K Kirchhoff]

>Number:         161043
>Category:       kern
>Synopsis:       PS/2 mouse does not work in 9.0-BETA2/-CURRENT
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Sep 26 21:20:09 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Adam K Kirchhoff
>Release:        9.0-BETA2, tracking -CURRENT
>Organization:
>Environment:
FreeBSD sorrow.ashke.com 9.0-BETA2 FreeBSD 9.0-BETA2 #5: Sun Sep 25 20:25:35 EDT 2011     root at sorrow.ashke.com:/usr/obj/usr/src/sys/SORROW  i386

>Description:

I have a logitech wireless PS/2 mouse that does not work on 9.0-BETA2.  If I boot from a flash drive with the 8.2 memstick image dd'ed to it, and drop to a shell, the mouse is clearly detected:

[adamk at sorrow ~]$ egrep "atk|psm" 8.2-dmesg.txt 
psmcpnp0: <PS/2 mouse port> port 0x60,0x64 irq 12 on acpi0
atkbd: the current kbd controller command byte 0045
atkbd: keyboard ID 0xffffffff (1)
atkbd: failed to reset the keyboard.
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
kbd0: atkbd0, AT 84 (1), config:0x0, flags:0x3d0000
atkbd0: [GIANT-LOCKED]
atkbd0: [ITHREAD]
psm0: current command byte:0045
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: [ITHREAD]
psm0: model MouseMan+, device ID 0-3e, 3 buttons
psm0: config:00000000, flags:00000008, packet size:3
psm0: syncmask:08, syncbits:00

With 9.0-BETA2, atkbdc0 has issues:

[adamk at sorrow ~]$ egrep "atk|psm" 9.0-BETA2-dmesg.txt 
psmcpnp0: <PS/2 mouse port> port 0x60,0x64 irq 12 on acpi0
atkbd: the current kbd controller command byte 0045
atkbd: keyboard ID 0xffffffff (1)
atkbd: failed to reset the keyboard.
atkbdc0: <Keyboard controller (i8042)> failed to probe at port 0x60 on isa0

>How-To-Repeat:

Install 9.0-BETA2 on a Dell Precision 490, plug in PS/2 mouse, reboot.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: