linux-kernel - [PATCH] [PATCH] removed unused var real_tty on n_tty

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Message-ID: <20080529152559.24079.81146.stgit@core>
Date:	Thu, 29 May 2008 16:26:00 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	akpm@...l.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [PATCH] removed unused var real_tty on n_tty_ioctl()

From: Alan Cox <alan@...hat.com>

From: Gustavo Fernando Padovan <gustavo@....ic.unicamp.br>

Hello,

I noted that the 'struct tty_struct *real_tty' is not used in this
function, so I removed the code about 'real_tty'. This little change
is on kernel 2.6.25.4, but aplies on 2.6.24 or greater.

Signed-off-by: Gustavo Fernando Padovan <gustavo@....ic.unicamp.br>
Acked-by: Alan Cox <alan@...hat.com>

Signed-off-by: Alan Cox <alan@...hat.com>
---

 drivers/char/tty_ioctl.c |    7 -------
 1 files changed, 0 insertions(+), 7 deletions(-)


diff --git a/drivers/char/tty_ioctl.c b/drivers/char/tty_ioctl.c
index b1a757a..8f81139 100644
--- a/drivers/char/tty_ioctl.c
+++ b/drivers/char/tty_ioctl.c
@@ -981,16 +981,9 @@ EXPORT_SYMBOL_GPL(tty_perform_flush);
 int n_tty_ioctl(struct tty_struct *tty, struct file *file,
 		       unsigned int cmd, unsigned long arg)
 {
-	struct tty_struct *real_tty;
 	unsigned long flags;
 	int retval;
 
-	if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
-	    tty->driver->subtype == PTY_TYPE_MASTER)
-		real_tty = tty->link;
-	else
-		real_tty = tty;
-
 	switch (cmd) {
 	case TCXONC:
 		retval = tty_check_change(tty);

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