From 716120e8010a7f400c6bed7384000e95e1465c94 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ky=C3=B6sti=20M=C3=A4lkki?= Date: Mon, 26 Aug 2013 19:19:44 +0300 Subject: [PATCH 1/2] usb serial gadget: no TTY hangup on USB disconnect [WIP] MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We may want to maintain the TTY over USB disconnects. This is useful when we have a terminal console to a host which power-cycles or for other reasons resets the USB host controller. Signed-off-by: Kyösti Mälkki --- drivers/usb/gadget/function/u_serial.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index b369292..d156a28 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -1258,8 +1258,13 @@ void gserial_disconnect(struct gserial *gser) gser->ioport = NULL; if (port->port.count > 0 || port->openclose) { wake_up_interruptible(&port->drain_wait); +#if 0 if (port->port.tty) tty_hangup(port->port.tty); +#else + if (port->port.tty) + stop_tty(port->port.tty); +#endif } spin_unlock_irqrestore(&port->port_lock, flags); -- 1.8.1.1