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Message-ID: <20150916105647.GK11268@sirena.org.uk>
Date: Wed, 16 Sep 2015 11:56:47 +0100
From: Mark Brown <broonie@...nel.org>
To: Vignesh R <vigneshr@...com>
Cc: Benoit Cousson <bcousson@...libre.com>,
Tony Lindgren <tony@...mide.com>,
Russell King <linux@....linux.org.uk>,
David Woodhouse <dwmw2@...radead.org>,
Brian Norris <computersforpeace@...il.com>, hramrach@...il.com,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mtd@...ts.infradead.org, linux-spi@...r.kernel.org
Subject: Re: [PATCH 1/5] spi: introduce mmap read support for spi flash
devices
On Wed, Sep 16, 2015 at 03:38:09PM +0530, Vignesh R wrote:
> But, I didn't get how to integrate with existing message queue. Memory
> mapped read by-passes message queue of SPI core. Could you please
> explain a bit more on integrating with message queue? Did you mean
> locking the existing message queue when memory mapped read is being
> requested?
Yes, and also making sure that we don't everything gets processed in
order so memory mapped requests come after any commands needed to set
them up and don't starve other work.
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