diff options
Diffstat (limited to 'drivers/usb/gadget/function/u_serial.c')
| -rw-r--r-- | drivers/usb/gadget/function/u_serial.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index 9b0805f55ad7..4d653d2960d4 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * u_serial.c - utilities for USB gadget "serial port"/TTY support * @@ -9,10 +10,6 @@ * Copyright (C) 1999 - 2002 Greg Kroah-Hartman (greg@kroah.com) * Copyright (C) 2000 Peter Berger (pberger@brimson.com) * Copyright (C) 2000 Al Borchers (alborchers@steinerpoint.com) - * - * This software is distributed under the terms of the GNU General - * Public License ("GPL") as published by the Free Software Foundation, - * either version 2 of that License or (at your option) any later version. */ /* #define VERBOSE_DEBUG */ @@ -537,7 +534,7 @@ static void gs_rx_push(unsigned long _port) } /* push data to (open) tty */ - if (req->actual) { + if (req->actual && tty) { char *packet = req->buf; unsigned size = req->actual; unsigned n; @@ -1078,6 +1075,7 @@ static void gs_complete_out(struct usb_ep *ep, struct usb_request *req) default: pr_warn("%s: unexpected %s status %d\n", __func__, ep->name, req->status); + /* fall through */ case 0: /* normal completion */ spin_lock(&info->con_lock); |