From: Vinod Koul <vinod.koul@intel.com>
To: Damien Horsley <Damien.Horsley@imgtec.com>
Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
Dan Williams <dan.j.williams@intel.com>,
James Hartley <james.hartley@imgtec.com>
Subject: Re: [PATCH V2] dmaengine: mdc: Correct terminate_all handling
Date: Fri, 18 Dec 2015 11:15:20 +0530 [thread overview]
Message-ID: <20151218054520.GU1854@localhost> (raw)
In-Reply-To: <1449760043-6292-1-git-send-email-Damien.Horsley@imgtec.com>
On Thu, Dec 10, 2015 at 03:07:23PM +0000, Damien Horsley wrote:
> From: "Damien.Horsley" <Damien.Horsley@imgtec.com>
>
> Use of the CANCEL bit in mdc_terminate_all creates an
> additional 'command done' to appear in the registers (in
> addition to an interrupt).
>
> In addition, there is a potential race between
> mdc_terminate_all and the irq handler if a transfer
> completes at the same time as the terminate all (presently
> this results in an inappropriate warning).
>
> To handle these issues, any outstanding 'command done'
> events are cleared during mdc_terminate_all and the irq
> handler takes no action when there are no new 'command done'
> events.
Applied, thanks
--
~Vinod
parent reply other threads:[~2015-12-18 5:42 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <1449760043-6292-1-git-send-email-Damien.Horsley@imgtec.com>]
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