linux-kernel - [v1 5/6] NET: nps_enet: TX done acknowledge.

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Date:	Mon, 17 Aug 2015 08:58:38 +0300
From:	Noam Camus <noamc@...hip.com>
To:	<linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>
CC:	<davem@...emloft.net>, <Alexey.Brodkin@...opsys.com>,
	<vgupta@...opsys.com>, <talz@...hip.com>,
	Noam Camus <noamc@...hip.com>
Subject: [v1 5/6] NET: nps_enet: TX done acknowledge.

From: Noam Camus <noamc@...hip.com>

This is needed for when TX done interrupt is in
"level mode".
For example it is true for some simulators of this device.

Signed-off-by: Noam Camus <noamc@...hip.com>
---
 drivers/net/ethernet/ezchip/nps_enet.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/ezchip/nps_enet.c b/drivers/net/ethernet/ezchip/nps_enet.c
index 0c13015..de4aafd 100644
--- a/drivers/net/ethernet/ezchip/nps_enet.c
+++ b/drivers/net/ethernet/ezchip/nps_enet.c
@@ -150,6 +150,9 @@ static void nps_enet_tx_handler(struct net_device *ndev)
 	if (!priv->tx_packet_sent || tx_ctrl.ct)
 		return;
 
+	/* Ack Tx ctrl register */
+	nps_enet_reg_set(priv, NPS_ENET_REG_TX_CTL, 0);
+
 	/* Check Tx transmit error */
 	if (unlikely(tx_ctrl.et)) {
 		ndev->stats.tx_errors++;
-- 
1.7.1

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