greybus: operation: clean up operation work function

Call request handler helper explicitly from the work function rather
than overload the operation completion callback.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

diff --git a/drivers/staging/greybus/operation.c b/drivers/staging/greybus/operation.c
index 1e181d5..0adb727 100644 (file)
--- a/drivers/staging/greybus/operation.c
+++ b/drivers/staging/greybus/operation.c
@@ -212,9 +212,10 @@ static void gb_operation_request_handle(struct gb_operation *operation)
 }
 
 /*
- * Complete an operation in non-atomic context.  For incoming
- * requests, the callback function is the request handler, and
- * the operation result should be -EINPROGRESS at this point.
+ * Process operation work.
+ *
+ * For incoming requests, call the protocol request handler. The operation
+ * result should be -EINPROGRESS at this point.
  *
  * For outgoing requests, the operation result value should have
  * been set before queueing this.  The operation callback function
@@ -227,7 +228,10 @@ static void gb_operation_work(struct work_struct *work)
 
        operation = container_of(work, struct gb_operation, work);
 
-       operation->callback(operation);
+       if (gb_operation_is_incoming(operation))
+               gb_operation_request_handle(operation);
+       else
+               operation->callback(operation);
 
        gb_operation_put_active(operation);
        gb_operation_put(operation);
@@ -789,14 +793,9 @@ static void gb_connection_recv_request(struct gb_connection *connection,
        gb_operation_get_active(operation);
 
        /*
-        * Incoming requests are handled by arranging for the
-        * request handler to be the operation's callback function.
-        *
-        * The last thing the handler does is send a response
-        * message. The initial reference to the operation will be
-        * dropped when the handler returns.
+        * The initial reference to the operation will be dropped when the
+        * request handler returns.
         */
-       operation->callback = gb_operation_request_handle;
        if (gb_operation_result_set(operation, -EINPROGRESS))
                queue_work(gb_operation_workqueue, &operation->work);
 }