proc: remove proc_tty_ldisc variable

/proc/tty/ldisc appear to be unused as a directory and it had been always that way. But it is userspace visible thing. Cowardly remove only in-kernel variable holding it. [[email protected]: add comment] Signed-off-by: Alexey Dobriyan <[email protected]> Cc: Al Viro <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
josf · Aug 8, 2014 · 849d20a · 849d20a
1 parent 4dcc03f
commit 849d20a
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/fs/proc/proc_tty.c b/fs/proc/proc_tty.c
@@ -18,7 +18,7 @@
 /*
  * The /proc/tty directory inodes...
  */
-static struct proc_dir_entry *proc_tty_ldisc, *proc_tty_driver;
+static struct proc_dir_entry *proc_tty_driver;
 
 /*
  * This is the handler for /proc/tty/drivers
@@ -176,7 +176,7 @@ void __init proc_tty_init(void)
 {
 	if (!proc_mkdir("tty", NULL))
 		return;
-	proc_tty_ldisc = proc_mkdir("tty/ldisc", NULL);
+	proc_mkdir("tty/ldisc", NULL);	/* Preserved: it's userspace visible */
 	/*
 	 * /proc/tty/driver/serial reveals the exact character counts for
 	 * serial links which is just too easy to abuse for inferring