greybus: svc: store protocol version

Store the "negotiated" protocol version to use in the svc state
struct instead of the connection struct.

The generic concept of a connection version is going away in favour of
bundle-class versions.
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/svc.c

@@ -383,15 +383,15 @@ static int gb_svc_version_request(struct gb_operation *op)
 		return -ENOTSUPP;
 	}
 
-	connection->module_major = request->major;
-	connection->module_minor = request->minor;
+	svc->protocol_major = request->major;
+	svc->protocol_minor = request->minor;
 
 	if (!gb_operation_response_alloc(op, sizeof(*response), GFP_KERNEL))
 		return -ENOMEM;
 
 	response = op->response->payload;
-	response->major = connection->module_major;
-	response->minor = connection->module_minor;
+	response->major = svc->protocol_major;
+	response->minor = svc->protocol_minor;
 
 	return 0;
 }

drivers/staging/greybus/svc.h

@@ -27,6 +27,9 @@ struct gb_svc {
 
 	u16 endo_id;
 	u8 ap_intf_id;
+
+	u8 protocol_major;
+	u8 protocol_minor;
 };
 #define to_gb_svc(d) container_of(d, struct gb_svc, d)