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>

1 files changed, 7 insertions, 18 deletions

diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index bd2715a9d8e..c74a00ad7ad 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;