greybus: operation: create gb_operation_sync for sending "simple" messages

Everyone keeps doing the same create/send/destroy logic all over the
place, so abstract that out to a simple function that can handle any
arbritrary request and/or response.  This will let us save lots of
duplicated logic in the protocol drivers.

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

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/staging/greybus/operation.h b/drivers/staging/greybus/operation.h
index c391b28a4ca7..bc5c1641e1ac 100644
--- a/drivers/staging/greybus/operation.h
+++ b/drivers/staging/greybus/operation.h
@@ -105,6 +105,10 @@ int gb_operation_status_map(u8 status);
 void greybus_data_sent(struct greybus_host_device *hd,
 				void *header, int status);
 
+int gb_operation_sync(struct gb_connection *connection, int type,
+		      void *request, int request_size,
+		      void *response, int response_size);
+
 int gb_operation_init(void);
 void gb_operation_exit(void);