linux-kernel - [PATCH 16/69] TTY: isdn, use tty_port_close

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Date:	Mon,  2 Apr 2012 13:54:00 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	gregkh@...uxfoundation.org
Cc:	alan@...ux.intel.com, linux-kernel@...r.kernel.org,
	jirislaby@...il.com, Karsten Keil <isdn@...ux-pingi.de>
Subject: [PATCH 16/69] TTY: isdn, use tty_port_close_end helper

The code does almost the same, so there we can leverage the helper's
code. The only difference is locking. The helper protects counts by a
spinlock. This never hurts and should be added to other code parts
too.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Karsten Keil <isdn@...ux-pingi.de>
---
 drivers/isdn/i4l/isdn_tty.c |    9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index ee8ba87..50d7246 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -1699,13 +1699,8 @@ isdn_tty_close(struct tty_struct *tty, struct file *filp)
 	tty_ldisc_flush(tty);
 	port->tty = NULL;
 	info->ncarrier = 0;
-	tty->closing = 0;
-	if (port->blocked_open) {
-		msleep_interruptible(500);
-		wake_up_interruptible(&port->open_wait);
-	}
-	port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
-	wake_up_interruptible(&port->close_wait);
+
+	tty_port_close_end(port, tty);
 #ifdef ISDN_DEBUG_MODEM_OPEN
 	printk(KERN_DEBUG "isdn_tty_close normal exit\n");
 #endif
-- 
1.7.9.2


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