--- tty_io_orig.c	2008-10-10 05:37:30.000000000 +0200
+++ tty_io.c	2008-10-14 14:28:50.000000000 +0200
@@ -2522,29 +2522,33 @@ int tty_do_resize(struct tty_struct *tty
 	struct pid *pgrp, *rpgrp;
 	unsigned long flags;
 
-	/* For a PTY we need to lock the tty side */
+        /* in case of resize ioctl on slave */
+	if ((tty == real_tty)
+	    && tty->driver->type == TTY_DRIVER_TYPE_PTY)
+		tty = tty->link;
+	
+	/* for a PTY we need to lock the tty side */
 	mutex_lock(&real_tty->termios_mutex);
-	if (!memcmp(ws, &tty->winsize, sizeof(*ws)))
-		goto done;
-	/* Get the PID values and reference them so we can
-	   avoid holding the tty ctrl lock while sending signals */
-	spin_lock_irqsave(&tty->ctrl_lock, flags);
-	pgrp = get_pid(tty->pgrp);
-	rpgrp = get_pid(real_tty->pgrp);
-	spin_unlock_irqrestore(&tty->ctrl_lock, flags);
-
-	if (pgrp)
-		kill_pgrp(pgrp, SIGWINCH, 1);
-	if (rpgrp != pgrp && rpgrp)
-		kill_pgrp(rpgrp, SIGWINCH, 1);
-
-	put_pid(pgrp);
-	put_pid(rpgrp);
-
-	tty->winsize = *ws;
+	flags = memcmp(ws, &real_tty->winsize, sizeof(*ws));
 	real_tty->winsize = *ws;
-done:
 	mutex_unlock(&real_tty->termios_mutex);
+	if (flags){
+		/* Get the PID values and reference them so we can
+		 avoid holding the tty ctrl lock while sending signals */
+		spin_lock_irqsave(&tty->ctrl_lock, flags);
+		pgrp = get_pid(tty->pgrp);
+		rpgrp = get_pid(real_tty->pgrp);
+		spin_unlock_irqrestore(&tty->ctrl_lock, flags);
+		
+		if (pgrp)
+			kill_pgrp(pgrp, SIGWINCH, 1);
+		if (rpgrp != pgrp && rpgrp)
+			kill_pgrp(rpgrp, SIGWINCH, 1);
+		
+		put_pid(pgrp);
+		put_pid(rpgrp);
+	}
+	
 	return 0;
 }
 
@@ -2996,7 +3000,7 @@ long tty_ioctl(struct file *file, unsign
 	case TIOCSTI:
 		return tiocsti(tty, p);
 	case TIOCGWINSZ:
-		return tiocgwinsz(tty, p);
+		return tiocgwinsz(real_tty, p);
 	case TIOCSWINSZ:
 		return tiocswinsz(tty, real_tty, p);
 	case TIOCCONS: