linux-kernel - [34-longterm 175/196] NET: slip, fix ldisc->open retval

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Date:	Mon, 12 Mar 2012 20:21:28 -0400
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	stable@...nel.org, linux-kernel@...r.kernel.org
Cc:	stable-review@...nel.org,
	Matvejchikov Ilya <matvejchikov@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: [34-longterm 175/196] NET: slip, fix ldisc->open retval

From: Matvejchikov Ilya <matvejchikov@...il.com>

                   -------------------
    This is a commit scheduled for the next v2.6.34 longterm release.
    If you see a problem with using this for longterm, please comment.
                   -------------------

commit 057bef938896e6266ae24ec4266d24792d27c29a upstream.

TTY layer expects 0 if the ldisc->open operation succeeded.

Signed-off-by : Matvejchikov Ilya <matvejchikov@...il.com>
Acked-by: Oliver Hartkopp <socketcan@...tkopp.net>
Acked-by: Alan Cox <alan@...ux.intel.com>

Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
---
 drivers/net/slip.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/slip.c b/drivers/net/slip.c
index 8969615..2605f3d 100644
--- a/drivers/net/slip.c
+++ b/drivers/net/slip.c
@@ -852,7 +852,9 @@ static int slip_open(struct tty_struct *tty)
 	/* Done.  We have linked the TTY line to a channel. */
 	rtnl_unlock();
 	tty->receive_room = 65536;	/* We don't flow control */
-	return sl->dev->base_addr;
+
+	/* TTY layer expects 0 on success */
+	return 0;
 
 err_free_bufs:
 	sl_free_bufs(sl);
-- 
1.7.9.3

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