linux-kernel - [PATCH 4/5] TTY: pty, remove superfluous ptm test

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Message-Id: <1327954472-26594-4-git-send-email-jslaby@suse.cz>
Date:	Mon, 30 Jan 2012 21:14:31 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	gregkh@...e.de
Cc:	linux-kernel@...r.kernel.org, alan@...ux.intel.com,
	jirislaby@...il.com
Subject: [PATCH 4/5] TTY: pty, remove superfluous ptm test

The code looks like:
if (tty->driver->subtype == PTY_TYPE_MASTER) {
  ...
  if (tty->driver == ptm_driver)

But the second if is superfluous because only the ptm_driver is of
PTY_TYPE_MASTER subtype.

Also we can remove the #if now because devpts_pty_kill is defined as
an empty function for non-CONFIG_UNIX98_PTYS configs.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/tty/pty.c |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index d505837..ddec9f3 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -54,10 +54,7 @@ static void pty_close(struct tty_struct *tty, struct file *filp)
 	wake_up_interruptible(&tty->link->write_wait);
 	if (tty->driver->subtype == PTY_TYPE_MASTER) {
 		set_bit(TTY_OTHER_CLOSED, &tty->flags);
-#ifdef CONFIG_UNIX98_PTYS
-		if (tty->driver == ptm_driver)
-			devpts_pty_kill(tty->link);
-#endif
+		devpts_pty_kill(tty->link);
 		tty_unlock();
 		tty_vhangup(tty->link);
 		tty_lock();
-- 
1.7.8.3


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