usb serial: more fixes and groundwork for tty changes

 - If a termios change fails due to lack of memory we should copy the
   old settings back over as the device has not changed
 - Note various locking problems
 - kl5kusb105 had various remaining tty flag handling problems
 - Make safe_serial use tty_insert_flip_string not open coded loops
 - set termios speed properly in usb_serial

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c
index 1b041c59aab2..10090cb52d31 100644
--- a/drivers/usb/serial/omninet.c
+++ b/drivers/usb/serial/omninet.c
@@ -295,8 +295,9 @@ static int omninet_write_room (struct usb_serial_port *port)
         struct usb_serial       *serial = port->serial;
         struct usb_serial_port  *wport  = serial->port[1];
 
-        int room = 0; // Default: no room
+        int room = 0; /* Default: no room */
 
+        /* FIXME: no consistent locking for write_urb_busy */
         if (wport->write_urb_busy)
                 room = wport->bulk_out_size - OMNINET_HEADERLEN;