From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 7 Mar 2012 10:05:00 +0000 (+0300)
Subject: tty: moxa: fix bit test in moxa_start()
X-Git-Tag: v3.3.1~146
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d3abff4f339019cd208ebefa35ab9b7fcaad93b1;p=karo-tx-linux.git

tty: moxa: fix bit test in moxa_start()

commit 58112dfbfe02d803566a2c6c8bd97b5fa3c62cdc upstream.

This is supposed to be doing a shift before the comparison instead of
just doing a bitwise AND directly.  The current code means the start()
just returns without doing anything.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index d15a071b1a54..0174d2d2a483 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -1331,7 +1331,7 @@ static void moxa_start(struct tty_struct *tty)
 	if (ch == NULL)
 		return;
 
-	if (!(ch->statusflags & TXSTOPPED))
+	if (!test_bit(TXSTOPPED, &ch->statusflags))
 		return;
 
 	MoxaPortTxEnable(ch);