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From: Nate Nielsen <nielsen-list@memberwebs.com>
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To: Ian Dowse <iedowse@iedowse.com>
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Date: Sun, 12 Feb 2006 05:14:01 +0000 (GMT)
Cc: freebsd-hackers@freebsd.org, Scott Long <scottl@samsco.org>
Subject: Re: Panic Kernel Dump to umass device?
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Ian Dowse wrote:
> 
> The USB stack supports polled operations, so it's actually not to
> hard to make this work. Below is a patch I had in one of my local
> trees that adds a CAM poll handler to the umass driver. I've just
> tested this and it does seem to make kernel dumping work, but I
> guess it might not be as reliable as dumping to other devices.

Thanks, that helps. It works nicely with a uhci USB controller.

However when the ohci driver is in use, we crash somewhere in
usb_transfer_complete. I'll look into this further.

Cheers,
Nate