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-rw-r--r--drivers/usb/serial/generic.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index fcd30b841559..a817ced82835 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -324,6 +324,9 @@ void usb_serial_generic_process_read_urb(struct urb *urb)
char *ch = (char *)urb->transfer_buffer;
int i;
+ if (!urb->actual_length)
+ return;
+
tty = tty_port_tty_get(&port->port);
if (!tty)
return;