[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/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c
index 458b6462f937..f13de20947e0 100644
--- a/drivers/isdn/gigaset/interface.c
+++ b/drivers/isdn/gigaset/interface.c
@@ -599,19 +599,9 @@ out:
 static void if_wake(unsigned long data)
 {
         struct cardstate *cs = (struct cardstate *) data;
-        struct tty_struct *tty;
-
-        tty = cs->tty;
-        if (!tty)
-                return;
-
-        if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
-            tty->ldisc.write_wakeup) {
-                gig_dbg(DEBUG_IF, "write wakeup call");
-                tty->ldisc.write_wakeup(tty);
-        }
 
-        wake_up_interruptible(&tty->write_wait);
+        if (cs->tty)
+                tty_wakeup(cs->tty);
 }
 
 /*** interface to common ***/