linux-kernel - [ 27/46] be2net: fix disabling TX in be

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Message-Id: <20130912175723.958427727@linuxfoundation.org>
Date:	Thu, 12 Sep 2013 10:58:38 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Sathya Perla <sathya.perla@...lex.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [ 27/46] be2net: fix disabling TX in be_close()

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

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

From: Sathya Perla <sathya.perla@...lex.com>

[ Upstream commit 6e1f99757a2b24b7255263b2240a0eb04215174d ]

commit fba875591 ("disable TX in be_close()") disabled TX in be_close()
to protect be_xmit() from touching freed up queues in the AER recovery
flow.  But, TX must be disabled *before* cleaning up TX completions in
the close() path, not after. This allows be_tx_compl_clean() to free up
all TX-req skbs that were notified to the HW.

Signed-off-by: Sathya Perla <sathya.perla@...lex.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/emulex/benet/be_main.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -2561,8 +2561,8 @@ static int be_close(struct net_device *n
 	/* Wait for all pending tx completions to arrive so that
 	 * all tx skbs are freed.
 	 */
-	be_tx_compl_clean(adapter);
 	netif_tx_disable(netdev);
+	be_tx_compl_clean(adapter);
 
 	be_rx_qs_destroy(adapter);
 


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