linux-kernel - Re: [PATCH 4/9] firewire: fw-sbp2: wait for completion of fetch agent reset

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Message-ID: <47A6C8BF.30204@s5r6.in-berlin.de>
Date:	Mon, 04 Feb 2008 09:11:43 +0100
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	linux1394-devel@...ts.sourceforge.net
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/9] firewire: fw-sbp2: wait for completion of fetch agent
 reset

I wrote:
> Like the old sbp2 driver, wait for the write transaction to the
> AGENT_RESET to complete before proceeding (after login, after reconnect,
> or in SCSI error handling).
> 
> There is one occasion where AGENT_RESET is written to from atomic
> context when getting DEAD status for a command ORB.  There we still
> continue without waiting for the transaction to complete because this
> is more difficult to fix...

In addition, we need to serialize agent resets by the SCSI error handler
and the command ORB completion against ongoing reconnects/ relogins.
-- 
Stefan Richter
-=====-==--- --=- --=--
http://arcgraph.de/sr/
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