diff --git a/drivers/staging/greybus/uart-gb.c b/drivers/staging/greybus/uart-gb.c
index 1be00d6..8df3bfb 100644
--- a/drivers/staging/greybus/uart-gb.c
+++ b/drivers/staging/greybus/uart-gb.c
@@ -159,6 +159,7 @@
 		gb_connection_err(tty->connection, "result %hhu",
 			operation->result);
 	} else {
+		response = operation->response.payload;
 		if (response->major > GB_UART_VERSION_MAJOR) {
 			pr_err("unsupported major version (%hhu > %hhu)\n",
 				response->major, GB_UART_VERSION_MAJOR);