1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c
index 6ded6345cd09..e0cd1e4c8892 100644
--- a/drivers/usb/gadget/function/u_serial.c
+++ b/drivers/usb/gadget/function/u_serial.c
@@ -375,10 +375,15 @@ __acquires(&port->port_lock)
 */
 {
         struct list_head        *pool = &port->write_pool;
-        struct usb_ep           *in = port->port_usb->in;
+        struct usb_ep           *in;
         int                     status = 0;
         bool                    do_tty_wake = false;
 
+        if (!port->port_usb)
+                return status;
+
+        in = port->port_usb->in;
+
         while (!port->write_busy && !list_empty(pool)) {
                 struct usb_request      *req;
                 int                     len;