From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Mon, 12 Aug 2013 11:44:35 +0000 (+0000)
Subject: ar71xx: ethernet: skip calls to netdev_completed_queue and netif_wake_queue if no... 
X-Git-Url: https://git.archive.openwrt.org/?p=openwrt.git;a=commitdiff_plain;h=b4d835c39478955df0e03bdf943269f56b6d6fc7

ar71xx: ethernet: skip calls to netdev_completed_queue and netif_wake_queue if no tx cleanup was done

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37758 3c298f89-4303-0410-b956-a3cf2f4a3e73
---

diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
index bdef8ba4ec..8c62a4d2c9 100644
--- a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
@@ -847,6 +847,9 @@ static int ag71xx_tx_packets(struct ag71xx *ag)
 
 	DBG("%s: %d packets sent out\n", ag->dev->name, sent);
 
+	if (!sent)
+		return;
+
 	netdev_completed_queue(ag->dev, sent, bytes_compl);
 	if ((ring->curr - ring->dirty) < (ring->size * 3) / 4)
 		netif_wake_queue(ag->dev);