[PATCH] Char: tty_wakeup cleanup

tty_wakeup cleanup

- remove wake_up_interruptible(&tty->write_wait) surrounding
  tty_wakup(tty);
- substitute tty->ldisc.write_wakeup(tty) + wake_up() by tty_wakeup(tty);

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Acked-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 12 deletions

diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index b2264a87617b..c6cca859af45 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -755,18 +755,8 @@ static void mos7840_bulk_out_data_callback(struct urb *urb)
 
         tty = mos7840_port->port->tty;
 
-        if (tty && mos7840_port->open) {
-                /* let the tty driver wakeup if it has a special *
-                 * write_wakeup function                         */
-
-                if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP))
-                    && tty->ldisc.write_wakeup) {
-                        (tty->ldisc.write_wakeup) (tty);
-                }
-
-                /* tell the tty driver that something has changed */
-                wake_up_interruptible(&tty->write_wait);
-        }
+        if (tty && mos7840_port->open)
+                tty_wakeup(tty);
 
 }