USB patch for better bus_dma and detachment support

[Rob]

Luke wrote:
> On Sun, 23 May 2004, Ian Dowse wrote:
> 
>>In case anybody is interested in testing or helping with this,
>>there's a patch at
>>
>>	http://people.freebsd.org/~iedowse/usb.diff
>>
>>that attempts to begin addressing a number of problems with our
>>current USB code:
> 
> 
> I'd love to try this out.  I'm using a Netgear FA120 USB ethernet adapter
> with the axe driver, and my kernel panics with a page fault in
> usb_transfer_complete every time I attempt to bring the interface down.
> This means I can't reboot without a panic.
> It looks like this code might address my problem.
> 

Would this patch also work against STABLE?
I'm having same USB trouble with STABLE here!

Thanks,
Rob.