From 5c0a2450d695bbe32b1fb81c07751bcbea64f084 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Sat, 22 Feb 2014 14:31:04 -0800
Subject: [PATCH] Revert "tty: Set correct tty name in 'active' sysfs
 attribute"

This reverts commit d8a5dc3033af2fd6d16030d2ee4fbd073460fe54.

This breaks plymouth installs, either because plymouth is using the file
"incorrectly" or because the patch is incorrect.  Either way, this needs
to be reverted until it is all figured out.

Reported-by: Josh Boyer <jwboyer@fedoraproject.org>
Reported-by: Ray Strode <halfline@gmail.com>
Cc: Lennart Poettering <lennart@poettering.net>
Cc: Kay Sievers <kay@vrfy.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: David Herrmann <dh.herrmann@gmail.com>
Cc: Werner Fink <werner@suse.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 Documentation/ABI/testing/sysfs-tty |  3 +--
 drivers/tty/tty_io.c                | 25 +++++++------------------
 2 files changed, 8 insertions(+), 20 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-tty b/Documentation/ABI/testing/sysfs-tty
index a2ccec35ffce..ad22fb0ee765 100644
--- a/Documentation/ABI/testing/sysfs-tty
+++ b/Documentation/ABI/testing/sysfs-tty
@@ -3,8 +3,7 @@ Date:		Nov 2010
 Contact:	Kay Sievers <kay.sievers@vrfy.org>
 Description:
 		 Shows the list of currently configured
-		 tty devices used for the console,
-		 like 'tty1 ttyS0'.
+		 console devices, like 'tty1 ttyS0'.
 		 The last entry in the file is the active
 		 device connected to /dev/console.
 		 The file supports poll() to detect virtual
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index bd2715a9d8e5..c74a00ad7add 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -1267,17 +1267,16 @@ static void pty_line_name(struct tty_driver *driver, int index, char *p)
  *	@p: output buffer of at least 7 bytes
  *
  *	Generate a name from a driver reference and write it to the output
- *	buffer. Return the number of bytes written.
+ *	buffer.
  *
  *	Locking: None
  */
-static ssize_t tty_line_name(struct tty_driver *driver, int index, char *p)
+static void tty_line_name(struct tty_driver *driver, int index, char *p)
 {
 	if (driver->flags & TTY_DRIVER_UNNUMBERED_NODE)
-		return sprintf(p, "%s", driver->name);
+		strcpy(p, driver->name);
 	else
-		return sprintf(p, "%s%d", driver->name,
-			       index + driver->name_base);
+		sprintf(p, "%s%d", driver->name, index + driver->name_base);
 }
 
 /**
@@ -3546,19 +3545,9 @@ static ssize_t show_cons_active(struct device *dev,
 		if (i >= ARRAY_SIZE(cs))
 			break;
 	}
-	while (i--) {
-		struct tty_driver *driver;
-		const char *name = cs[i]->name;
-		int index = cs[i]->index;
-
-		driver = cs[i]->device(cs[i], &index);
-		if (driver) {
-			count += tty_line_name(driver, index, buf + count);
-			count += sprintf(buf + count, "%c", i ? ' ':'\n');
-		} else
-			count += sprintf(buf + count, "%s%d%c",
-					 name, index, i ? ' ':'\n');
-	}
+	while (i--)
+		count += sprintf(buf + count, "%s%d%c",
+				 cs[i]->name, cs[i]->index, i ? ' ':'\n');
 	console_unlock();
 
 	return count;