linux-kernel - Re: [PATCH 2/7] mfd: cros_ec: spi: Add mutex to cros_ec

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Message-ID: <CAPnjgZ034FrVVphJCmX5jZE8LeWOEBjsH7M=2C_meM0fMss1NA@mail.gmail.com>
Date:	Fri, 18 Apr 2014 11:28:16 -0600
From:	Simon Glass <sjg@...omium.org>
To:	Doug Anderson <dianders@...omium.org>
Cc:	Lee Jones <lee.jones@...aro.org>,
	Stephen Warren <swarren@...dia.com>,
	Wolfram Sang <wsa@...-dreams.de>,
	Andrew Bresticker <abrestic@...omium.org>,
	Dylan Reid <dgreid@...omium.org>,
	Olof Johansson <olof@...om.net>,
	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	lk <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/7] mfd: cros_ec: spi: Add mutex to cros_ec_spi

Hi Doug,

On 17 April 2014 11:59, Doug Anderson <dianders@...omium.org> wrote:
> The main transfer function for cros_ec_spi can be called by more than
> one client at a time.  Make sure that those clients don't stomp on
> each other by locking the bus for the duration of the transfer
> function.

Is there no lock at the cros_ec layer?

Regards,
Simon
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