greybus: only record message payload size

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An asynchronous operation will want to know how big the response
message it receives is.  Rather than require the sender to record
that information, expose a new field "payload_size" available to
the protocol code for this purpose.

An operation message consists of a header and a payload.  The size
of the message can be derived from the size of the payload, so
record only the payload size and not the size of the whole message.
Reorder the fields in a message structure.

Update the description of the message header structure.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

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Alex Elder 2014-12-03 12:27:44 -06:00 • committed by Greg Kroah-Hartman

parent 7a9366aa1e

commit 7cfa699556

2 changed files with 27 additions and 20 deletions

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34

drivers/staging/greybus/operation.c

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13

drivers/staging/greybus/operation.h

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