From: Łukasz Bartosik ukaszb@chromium.org
When /dev/ttyDBC0 device is created then by default ECHO flag is set for the terminal device. However if data arrives from a peer before application using /dev/ttyDBC0 applies its set of terminal flags then the arriving data will be echoed which might not be desired behavior.
Fixes: 4521f1613940 ("xhci: dbctty: split dbc tty driver registration and unregistration functions.") Cc: stable@vger.kernel.org Signed-off-by: Łukasz Bartosik ukaszb@chromium.org Signed-off-by: Mathias Nyman mathias.nyman@linux.intel.com --- drivers/usb/host/xhci-dbgtty.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/usb/host/xhci-dbgtty.c b/drivers/usb/host/xhci-dbgtty.c index 60ed753c85bb..d894081d8d15 100644 --- a/drivers/usb/host/xhci-dbgtty.c +++ b/drivers/usb/host/xhci-dbgtty.c @@ -617,6 +617,7 @@ int dbc_tty_init(void) dbc_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; dbc_tty_driver->subtype = SERIAL_TYPE_NORMAL; dbc_tty_driver->init_termios = tty_std_termios; + dbc_tty_driver->init_termios.c_lflag &= ~ECHO; dbc_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; dbc_tty_driver->init_termios.c_ispeed = 9600;