tree 5f376a7091afbdb813e2ad25407a7b0026d08118
parent 97720706084dd8c45eecc61d39353c7b62939b8f
author Andrew Bresticker <abrestic@chromium.org> 1411053538 +0200
committer Lee Jones <lee.jones@linaro.org> 1412627416 +0100

mfd: cros_ec: wait for completion of commands that return IN_PROGRESS

When an EC command returns EC_RES_IN_PROGRESS, we need to query
the state of the EC until it indicates that it is no longer busy.
Do this in cros_ec_cmd_xfer() under the EC's mutex so that other
commands (e.g. keyboard, I2C passtru) aren't issued to the EC while
it is working on the in-progress command.

The 10 milliseconds delay and the number of retries are the values
that were used by the flashrom tool when retrying commands.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Lee Jones <lee.jones@linaro.org>