Patchwork [3.5.y.z,extended,stable] Patch "8139cp: reset BQL when ring tx ring cleared" has been added to staging queue

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Submitter Luis Henriques
Date June 24, 2013, 8:19 a.m.
Message ID <1372061949-5137-1-git-send-email-luis.henriques@canonical.com>
Download mbox | patch
Permalink /patch/253709/
State New
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Comments

Luis Henriques - June 24, 2013, 8:19 a.m.
This is a note to let you know that I have just added a patch titled

    8139cp: reset BQL when ring tx ring cleared

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

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From 8d045dba41ce88559ffc6b3364bf95fb684c4a7c Mon Sep 17 00:00:00 2001
From: stephen hemminger <stephen@networkplumber.org>
Date: Mon, 20 May 2013 06:54:43 +0000
Subject: [PATCH] 8139cp: reset BQL when ring tx ring cleared

commit 98962baad72fd6d393bf39dbb7c2076532c363c6 upstream.

This patch cures transmit timeout's with DHCP observed
while running under KVM. When the transmit ring is cleaned out,
the Byte Queue Limit values need to be reset.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
---
 drivers/net/ethernet/realtek/8139cp.c | 1 +
 1 file changed, 1 insertion(+)

--
1.8.1.2

Patch

diff --git a/drivers/net/ethernet/realtek/8139cp.c b/drivers/net/ethernet/realtek/8139cp.c
index e0490ad..d9ef667 100644
--- a/drivers/net/ethernet/realtek/8139cp.c
+++ b/drivers/net/ethernet/realtek/8139cp.c
@@ -1116,6 +1116,7 @@  static void cp_clean_rings (struct cp_private *cp)
 			cp->dev->stats.tx_dropped++;
 		}
 	}
+	netdev_reset_queue(cp->dev);

 	memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE);
 	memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);