linux-kernel - [PATCH] net: mvneta: fix enable of all initialized RXQs

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Date:   Fri, 30 Mar 2018 12:05:31 +0200
From:   Gregory CLEMENT <gregory.clement@...tlin.com>
To:     "David S. Miller" <davem@...emloft.net>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Cc:     Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Antoine Tenart <antoine.tenart@...tlin.com>,
        Miquèl Raynal <miquel.raynal@...tlin.com>,
        Maxime Chevallier <maxime.chevallier@...tlin.com>,
        stefanc@...vell.com, ymarkman@...vell.com,
        Yelena Krivosheev <yelena@...vell.com>,
        Gregory CLEMENT <gregory.clement@...tlin.com>
Subject: [PATCH] net: mvneta: fix enable of all initialized RXQs

From: Yelena Krivosheev <yelena@...vell.com>

In mvneta_port_up() we enable relevant RX and TX port queues by write
queues bit map to an appropriate register.

q_map must be ZERO in the beginning of this process.

Signed-off-by: Yelena Krivosheev <yelena@...vell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@...tlin.com>
---
 drivers/net/ethernet/marvell/mvneta.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 25e9a551cc8c..3f6fb635738c 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -1132,6 +1132,7 @@ static void mvneta_port_up(struct mvneta_port *pp)
 	}
 	mvreg_write(pp, MVNETA_TXQ_CMD, q_map);
 
+	q_map = 0;
 	/* Enable all initialized RXQs. */
 	for (queue = 0; queue < rxq_number; queue++) {
 		struct mvneta_rx_queue *rxq = &pp->rxqs[queue];
-- 
2.16.2