[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, 0 insertions, 3 deletions

diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index a0f822c9d74d..88fc24fc4392 100644
--- a/drivers/char/epca.c
+++ b/drivers/char/epca.c
@@ -844,7 +844,6 @@ static void pc_flush_buffer(struct tty_struct *tty)
         fepcmd(ch, STOUT, (unsigned) tail, 0, 0, 0);
         memoff(ch);
         spin_unlock_irqrestore(&epca_lock, flags);
-        wake_up_interruptible(&tty->write_wait);
         tty_wakeup(tty);
 } /* End pc_flush_buffer */
 
@@ -1795,7 +1794,6 @@ static void doevent(int crd)
                                 { /* Begin if LOWWAIT */
                                         ch->statusflags &= ~LOWWAIT;
                                         tty_wakeup(tty);
-                                        wake_up_interruptible(&tty->write_wait);
                                 } /* End if LOWWAIT */
                         } else if (event & EMPTYTX_IND)  { /* Begin EMPTYTX_IND */
                                 /* This event is generated by setup_empty_event */
@@ -1803,7 +1801,6 @@ static void doevent(int crd)
                                 if (ch->statusflags & EMPTYWAIT)  { /* Begin if EMPTYWAIT */
                                         ch->statusflags &= ~EMPTYWAIT;
                                         tty_wakeup(tty);
-                                        wake_up_interruptible(&tty->write_wait);
                                 } /* End if EMPTYWAIT */
                         } /* End EMPTYTX_IND */
                 } /* End if valid tty */