kern/122597: Intel wireless, iwi driver, fails after 3 - 4 hours of use"firmware stuck in state 4"

[Rick Sprague]

>Number:         122597
>Category:       kern
>Synopsis:       Intel wireless, iwi driver, fails after 3 - 4 hours of use"firmware stuck in state 4"
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Apr 09 14:30:00 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Rick Sprague
>Release:        FreeBSD 7 Stable
>Organization:
>Environment:
FreeBSD inspiron_iwi0.sprague.com 7.0-STABLE FreeBSD 7.0-STABLE #28: Tue Apr  8 16:32:22 EDT 2008     root at inspiron_iwi0.sprague.com:/usr/obj/usr/src/sys/INSPIRON  i386
>Description:
I've not had this problem under 6.x or WinXP.  I've seen other posts in newsgroups concerning this issue w/ no resolution other than "somebody should send a PR".

Typically it will take 4 hours and then I get the following:

Apr  9 01:56:12 inspiron_iwi0 kernel: iwi0: firmware stuck in state 4, resetting

Sometimes, it will only take 2.5-3 hours under heavy use.  I just don't know what triggers the failure.  I've been hobbling along w/ "netif restart"s

rc.conf:
-------
hostname=inspiron_iwi0.sprague.com
ifconfig_iwi0="WPA DHCP"
ifconfig_iwi0_alias0="inet 192.168.1.8 netmask 255.255.255.0"
ifconfig_iwi0_alias1="inet 10.0.2.15 netmask 255.255.255.0"
>How-To-Repeat:
Failure occurs after ~4 hours use, to 2.5-3hr under heavy use.
>Fix:


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