linux-kernel - [ 20/72] 3c59x: shorten timer period for slave devices

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Message-Id: <20120228010431.185435769@linuxfoundation.org>
Date:	Mon, 27 Feb 2012 17:04:49 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Jean Delvare <jdelvare@...e.de>,
	Steffen Klassert <steffen.klassert@...unet.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [ 20/72] 3c59x: shorten timer period for slave devices

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------


From: Eric Dumazet <eric.dumazet@...il.com>

[ Upstream commit 3013dc0cceb9baaf25d5624034eeaa259bf99004 ]

Jean Delvare reported bonding on top of 3c59x adapters was not detecting
network cable removal fast enough.

3c59x indeed uses a 60 seconds timer to check link status if carrier is
on, and 5 seconds if carrier is off.

This patch reduces timer period to 5 seconds if device is a bonding
slave.

Reported-by: Jean Delvare <jdelvare@...e.de>
Acked-by: Jean Delvare <jdelvare@...e.de>
Acked-by: Steffen Klassert <steffen.klassert@...unet.com>
Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/3com/3c59x.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/3com/3c59x.c
+++ b/drivers/net/ethernet/3com/3c59x.c
@@ -1842,7 +1842,7 @@ vortex_timer(unsigned long data)
 		ok = 1;
 	}
 
-	if (!netif_carrier_ok(dev))
+	if (dev->flags & IFF_SLAVE || !netif_carrier_ok(dev))
 		next_tick = 5*HZ;
 
 	if (vp->medialock)


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