[PATCH 14/19] tty: Move tty_ldisc_kill()

From	Peter Hurley <peter@hurleysoftware.com>
Newsgroups	linux.kernel
Subject	[PATCH 14/19] tty: Move tty_ldisc_kill()
Date	2015-11-27 22:50 +0100
Message-ID	<qzz3Y-8gp-13@gated-at.bofh.it> (permalink)
References	<qzyUh-8cQ-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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In preparation for destroying the line discipline instance on hangup,
move tty_ldisc_kill() to eliminate needless forward declarations.
No functional change.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
 drivers/tty/tty_ldisc.c | 32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index 680c049..748d9a9 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -623,6 +623,25 @@ err:
 }
 
 /**
+ *	tty_ldisc_kill	-	teardown ldisc
+ *	@tty: tty being released
+ *
+ *	Perform final close of the ldisc and reset tty->ldisc
+ */
+static void tty_ldisc_kill(struct tty_struct *tty)
+{
+	if (!tty->ldisc)
+		return;
+	/*
+	 * Now kill off the ldisc
+	 */
+	tty_ldisc_close(tty, tty->ldisc);
+	tty_ldisc_put(tty->ldisc);
+	/* Force an oops if we mess this up */
+	tty->ldisc = NULL;
+}
+
+/**
  *	tty_reset_termios	-	reset terminal state
  *	@tty: tty to reset
  *
@@ -769,19 +788,6 @@ int tty_ldisc_setup(struct tty_struct *tty, struct tty_struct *o_tty)
 	return 0;
 }
 
-static void tty_ldisc_kill(struct tty_struct *tty)
-{
-	if (!tty->ldisc)
-		return;
-	/*
-	 * Now kill off the ldisc
-	 */
-	tty_ldisc_close(tty, tty->ldisc);
-	tty_ldisc_put(tty->ldisc);
-	/* Force an oops if we mess this up */
-	tty->ldisc = NULL;
-}
-
 /**
  *	tty_ldisc_release		-	release line discipline
  *	@tty: tty being shut down (or one end of pty pair)
-- 
2.6.3

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Thread

[PATCH 00/19] Fix driver crashes on hangup Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:40 +0100
  [PATCH 03/19] bluetooth: hci_ldisc: Remove dead code Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:40 +0100
  [PATCH 06/19] tty: Fix unsafe ldisc reference via ioctl(TIOCGETD) Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 12/19] tty: Prepare for destroying line discipline on hangup Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 19/19] tty: Touch up style issues in ldisc core Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 13/19] tty: Handle NULL tty->ldisc Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 09/19] staging/speakup: Use tty_ldisc_ref() for paste kworker Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 10/19] tty: Fix comments for tty_ldisc_get() Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 14/19] tty: Move tty_ldisc_kill() Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 11/19] tty: Fix comments for tty_ldisc_release() Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 08/19] tty: Reset c_line from driver's init_termios Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 02/19] serial: 68328: Remove bogus ldisc reset Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 17/19] tty: Destroy ldisc instance on hangup Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 01/19] staging: digi: Replace open-coded tty_wakeup() Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 15/19] tty: Use 'disc' for line discipline index name Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 18/19] tty: Document c_line == N_TTY initial condition Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 05/19] tty: Remove chars_in_buffer() line discipline method Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 16/19] tty: Refactor tty_ldisc_reinit() for reuse Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100
  [PATCH 07/19] n_tty: Fix unsafe reference to "other" ldisc Peter Hurley <peter@hurleysoftware.com> - 2015-11-27 22:50 +0100

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