From: Peter Hurley <peter@hurleysoftware.com>
Date: Thu, 16 Oct 2014 19:36:38 +0000 (-0400)
Subject: n_tty: Remove stale read lock comment
X-Git-Tag: firefly_0821_release~176^2~2678^2~195
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=fa59e25664fc2a9e0fec494e921480e37b9e3c1c;p=firefly-linux-kernel-4.4.55.git

n_tty: Remove stale read lock comment

The stale comment refers to lock behavior which was eliminated in
commit 6d76bd2618535c581f1673047b8341fd291abc67,
n_tty: Make N_TTY ldisc receive path lockless.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 6dcaa5294f1e..0cb0e12f87c7 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -2248,8 +2248,6 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
 				nr--;
 			}
 
-			/* The copy function takes the read lock and handles
-			   locking internally for this case */
 			uncopied = copy_from_read_buf(tty, &b, &nr);
 			uncopied += copy_from_read_buf(tty, &b, &nr);
 			if (uncopied) {