mfd: cros_ec: spi: Add mutex to cros_ec_spi

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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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Doug Anderson 2014-04-30 10:44:05 -07:00 • committed by Lee Jones

parent 1fe368665b

commit 362196e5d0

1 changed files with 21 additions and 5 deletions

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drivers/mfd/cros_ec_spi.c

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