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[PATCH] Char: mxser_new, eliminate tty ldisc deref 

Use tty_ldisc_flush and tty_wakeup helpers for accessing ldisc internals.

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jiri Slaby 2006-12-08 02:38:24 -08:00 committed by Linus Torvalds
parent 6faa3778ff
commit 7e8bcf9add
1 changed files with 2 additions and 10 deletions
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12
drivers/char/mxser_new.c
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@ -1065,7 +1065,6 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
unsigned long timeout;
unsigned long flags;
struct tty_ldisc *ld;
if (tty->index == MXSER_PORTS)
return;
@ -1145,12 +1144,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
if (tty->driver->flush_buffer)
tty->driver->flush_buffer(tty);
ld = tty_ldisc_ref(tty);
if (ld) {
if (ld->flush_buffer)
ld->flush_buffer(tty);
tty_ldisc_deref(ld);
}
tty_ldisc_flush(tty);
tty->closing = 0;
info->event = 0;
@ -1303,9 +1297,7 @@ static void mxser_flush_buffer(struct tty_struct *tty)
spin_unlock_irqrestore(&info->slock, flags);
/* above added by shinhay */
wake_up_interruptible(&tty->write_wait);
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup)
(tty->ldisc.write_wakeup) (tty);
tty_wakeup(tty);
}
/*