From: Jiri Slaby <jslaby@suse.cz>
Date: Wed, 27 Feb 2013 21:30:24 +0000 (+0100)
Subject: TTY: disable debugging warning
X-Git-Tag: firefly_0821_release~3680^2~824^2~15
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=34dcfb8479ab3c3669561eb9279284cb0eda2572;p=firefly-linux-kernel-4.4.55.git

TTY: disable debugging warning

We added a warning to flush_to_ldisc to report cases when it is called
with a NULL tty. It was for debugging purposes and it lead to a
patchset from Peter Hurley. The patchset however did not make it to
3.9, so disable the warning now to not disturb people.

We can re-add it when the series is in and we are hunting for another
bugs.

Reported-by: David Miller <davem@davemloft.net>
Cc: stable <stable@vger.kernel.org>   # 3.8
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index bb119934e76c..578aa7594b11 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -425,7 +425,7 @@ static void flush_to_ldisc(struct work_struct *work)
 	struct tty_ldisc *disc;
 
 	tty = port->itty;
-	if (WARN_RATELIMIT(tty == NULL, "tty is NULL\n"))
+	if (tty == NULL)
 		return;
 
 	disc = tty_ldisc_ref(tty);