From: Doug Anderson <dianders@chromium.org>
Date: Wed, 30 Apr 2014 17:44:05 +0000 (-0700)
Subject: mfd: cros_ec: spi: Add mutex to cros_ec_spi
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~91^2~6^2~13
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=362196e5d0832ce3c4e1df376c02cff812a2391b;p=pandora-kernel.git

mfd: cros_ec: spi: Add mutex to cros_ec_spi

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.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Andrew Bresticker <abrestic@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---

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