Char: istallion, remove hangup bottomhalf

tty_hangup schedules a work for hangup itself, no need to do it in the driver.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/char/istallion.c

@@ -627,7 +627,6 @@ static int	stli_initopen(struct stlibrd *brdp, struct stliport *portp);
 static int	stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
 static int	stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
 static int	stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp);
-static void	stli_dohangup(struct work_struct *);
 static int	stli_setport(struct stliport *portp);
 static int	stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
 static void	stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
@@ -1823,25 +1822,6 @@ static void stli_start(struct tty_struct *tty)
 
 /*****************************************************************************/
 
-/*
- *	Scheduler called hang up routine. This is called from the scheduler,
- *	not direct from the driver "poll" routine. We can't call it there
- *	since the real local hangup code will enable/disable the board and
- *	other things that we can't do while handling the poll. Much easier
- *	to deal with it some time later (don't really care when, hangups
- *	aren't that time critical).
- */
-
-static void stli_dohangup(struct work_struct *ugly_api)
-{
-	struct stliport *portp = container_of(ugly_api, struct stliport, tqhangup);
-	if (portp->tty != NULL) {
-		tty_hangup(portp->tty);
-	}
-}
-
-/*****************************************************************************/
-
 /*
  *	Hangup this port. This is pretty much like closing the port, only
  *	a little more brutal. No waiting for data to drain. Shutdown the
@@ -2405,7 +2385,7 @@ static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp)
 			    ((portp->sigs & TIOCM_CD) == 0)) {
 				if (portp->flags & ASYNC_CHECK_CD) {
 					if (tty)
-						schedule_work(&portp->tqhangup);
+						tty_hangup(tty);
 				}
 			}
 		}
@@ -2733,7 +2713,6 @@ static int stli_initports(struct stlibrd *brdp)
 		portp->baud_base = STL_BAUDBASE;
 		portp->close_delay = STL_CLOSEDELAY;
 		portp->closing_wait = 30 * HZ;
-		INIT_WORK(&portp->tqhangup, stli_dohangup);
 		init_waitqueue_head(&portp->open_wait);
 		init_waitqueue_head(&portp->close_wait);
 		init_waitqueue_head(&portp->raw_wait);

include/linux/istallion.h

@@ -71,7 +71,6 @@ struct stliport {
 	wait_queue_head_t	open_wait;
 	wait_queue_head_t	close_wait;
 	wait_queue_head_t	raw_wait;
-	struct work_struct	tqhangup;
 	struct asysigs		asig;
 	unsigned long		addr;
 	unsigned long		rxoffset;