greybus: initialize all fields in an SVC handshake message

Currently only the handshake_type is being initialized when
responding to an SVC handshake request. Update this to
explicitly set all header/payload fields appropriately.
Signed-off-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

drivers/staging/greybus/ap.c

@@ -93,6 +93,12 @@ static void svc_handshake(struct svc_function_handshake *handshake,
 	if (!svc_msg)
 		return;
 
+	svc_msg->header.function_id = SVC_FUNCTION_HANDSHAKE;
+	svc_msg->header.message_type = SVC_MSG_DATA;
+	svc_msg->header.payload_length =
+		cpu_to_le16(sizeof(struct svc_function_handshake));
+	svc_msg->handshake.version_major = GREYBUS_VERSION_MAJOR;
+	svc_msg->handshake.version_minor = GREYBUS_VERSION_MINOR;
 	svc_msg->handshake.handshake_type = SVC_HANDSHAKE_AP_HELLO;
 	svc_msg_send(svc_msg, hd);
 }