Commit 96433d10 authored Mar 11, 2013 by Peter Hurley Committed by Greg Kroah-Hartman Mar 18, 2013

tty: Bracket ldisc release with TTY_DEBUG_HANGUP messages



Expected typical log output:
[    2.437211] tty_open: opening pts1...
[    2.443376] tty_open: opening pts5...
[    2.447830] tty_release: ptm0 (tty count=1)...
[    2.447849] pts0 vhangup...
[    2.447865] tty_release: ptm0: final close
[    2.447876] tty_release: ptm0: freeing structure...
[    2.451634] tty_release: tty1 (tty count=1)...
[    2.451638] tty_release: tty1: final close
[    2.451654] tty_release: tty1: freeing structure...
[    2.452505] tty_release: pts5 (tty count=2)...
[    2.453029] tty_open: opening pts0...

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent c8785241

drivers/tty/tty_io.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -1836,7 +1836,7 @@ int tty_release(struct inode inode, struct file filp)
		return 0;

		#ifdef TTY_DEBUG_HANGUP
		printk(KERN_DEBUG "%s: freeing tty structure...\n", __func__);
		printk(KERN_DEBUG "%s: %s: final close\n", __func__, tty_name(tty, buf));
		#endif
		/*
		* Ask the line discipline code to release its structures
		@@ -1848,6 +1848,9 @@ int tty_release(struct inode inode, struct file filp)
		if (o_tty)
		tty_flush_works(o_tty);

		#ifdef TTY_DEBUG_HANGUP
		printk(KERN_DEBUG "%s: %s: freeing structure...\n", __func__, tty_name(tty, buf));
		#endif
		/*
		* The release_tty function takes care of the details of clearing
		* the slots and preserving the termios structure. The tty_unlock_pair