kern/41661: ath(4) does not work properly with AR2413

[onitake%gmail.com@localhost]

>Number:         41661
>Category:       kern
>Synopsis:       ath(4) does not work properly with AR2413
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jul 01 22:25:00 +0000 2009
>Originator:     Gregor Riepl
>Release:        5.0
>Organization:
>Environment:
NetBSD  5.0 NetBSD 5.0 (GENERIC) #0: Sun Apr 26 18:50:08 UTC 2009  
builds%b6.netbsd.org@localhost:/home/builds/ab/netbsd-5-0-RELEASE/i386/200904260229Z-obj/home/builds/ab/netbsd-5-0-RELEASE/src/sys/arch/i386/compile/GENERIC
 i386

>Description:
The Atheros WLAN driver in NetBSD seems to have some issues with the AR2413 
chipset.

I get a lot of these:
ath0: device timeout (txq 1, txintrperiod 5)
ath0: device timeout (txq 1, txintrperiod 4)
ath0: device timeout (txq 1, txintrperiod 3)
ath0: device timeout (txq 1, txintrperiod 2)
ath0: device timeout (txq 8, txintrperiod 1)
ath0: device timeout (txq 8, txintrperiod 1)

Sometimes, when I reconfigure the device several times in a row, the system 
will even freeze up and needs to be powercycled.

This is being observed on a PC Engines alix2d3 with a Compex WLM54G miniPCI 
card.

The card works fine on Linux and pfSense. The OpenBSD driver works in general, 
but has similar issues and does not support 802.11g on this chipset.
>How-To-Repeat:

>Fix: