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Date: Sat, 25 Oct 2003 13:12:45 -0700
From: Murray Stokely <murray@FreeBSD.org>
To: Mike Harding <mvh@ix.netcom.com>
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cc: stable@FreeBSD.org
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Subject: Re: Possible mouse/ATA problems in -STABLE
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On Thu, Oct 23, 2003 at 09:46:31AM -0700, Mike Harding wrote:
> I think that maybe the new ATA drivers are staying in the interrupt a
> bit longer and causing data to be dropped.
> 
> I have reverted to 1-sep -STABLE and it seems stable (so far), I am
> going to try a new -STABLE and look at the interrupt counts.
> 
> The -STABLE ATA drivers were MFC'd - after this merge I see the
> following comment for a commit on ata-dma.c (revision 1.122)
> 
> ...
> "This pushed the time spent between starting the ATA command and
> starting the DMA engine over the hill for some controllers
> (especially the Silicon Image DS3112a) and caused what looked
> like lost interrupts."
> 
> - so possibly we need another MFC... ?

I think maybe we do.  Unfortunately Soeren is not working on ATA in
-stable.  Is there anyone else (a committer?) who can verify that this
analysis is correct?  Can we circulate a patch?

  - Murray