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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.

[akpm@linux-foundation.org: add comment]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexey Dobriyan 2014-08-08 14:21:31 -07:00 committed by Linus Torvalds
parent 4dcc03fc45
commit 849d20a128
1 changed files with 2 additions and 2 deletions
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4
fs/proc/proc_tty.c
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@ -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