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From: Ian Munsie <imunsie@au1.ibm.com>
To: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Cc: Michael Ellerman <michaele@au1.ibm.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Matt Ochs <mrochs@us.ibm.com>, Manoj Kumar <kumarmn@us.ibm.com>,
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        Michael Neuling <mikey@neuling.org>
Subject: Re: [PATCH v3 1/2] cxl: Add mechanism for delivering AFU driver specific events
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Date: Thu, 10 Mar 2016 12:26:22 +1100
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Excerpts from Frederic Barrat's message of 2016-03-09 20:27:20 +1100:
> It would also avoid entering
>         WARN(1, "afu_read must be buggy\n");
> if the driver changes its mind between the 2 calls :-)

Honestly, it had better not - that would be a gross violation of the
poll & read semantics and the kind of thing that leads to application
hangs.

Cheers,
-Ian