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Date: Wed, 03 Apr 2013 21:02:03 -0500
From: Joshua Isom <jrisom@gmail.com>
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To: Adrian Chadd <adrian@freebsd.org>
Subject: Re: ath not working after a motherboard and ram upgrade
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It seems to be working for me now at full memory.  I did a search on the 
BUS_DMASYNC_PREREAD, one nic for freebsd had a patch full of replacing 
PREREAD with PREWRITE, so maybe a doc needs updated.

On 4/3/2013 8:34 PM, Adrian Chadd wrote:
> Ok, grab this:
>
> http://people.freebsd.org/~adrian/ath/20130403-ath-rx-unmap-first-2.diff
>
> then patch this:
>
> cd /path/to/blah/sys/dev/ath/
> svn revert *[ch]
> patch -p0 < patch
>
> I'm running this on an AR9580 with the above patch. No issues now.
>
> The problem? PREREAD doesn't do what I thought it does.
>
>
> Adrian
>