linux-kernel - [PATCH 1/3] net: qca_spi: Avoid packet drop during initial sync

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Date:   Wed, 18 Jul 2018 08:31:43 +0200
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Stefan Wahren <stefan.wahren@...e.com>
Subject: [PATCH 1/3] net: qca_spi: Avoid packet drop during initial sync

As long as the synchronization with the QCA7000 isn't finished, we
cannot accept packets from the upper layers. So let the SPI thread
enable the TX queue after sync and avoid unwanted packet drop.

Signed-off-by: Stefan Wahren <stefan.wahren@...e.com>
Fixes: 291ab06ecf67 ("net: qualcomm: new Ethernet over SPI driver for QCA7000")
---
 drivers/net/ethernet/qualcomm/qca_spi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
index 5803cd6..7db149f 100644
--- a/drivers/net/ethernet/qualcomm/qca_spi.c
+++ b/drivers/net/ethernet/qualcomm/qca_spi.c
@@ -658,7 +658,7 @@ qcaspi_netdev_open(struct net_device *dev)
 		return ret;
 	}
 
-	netif_start_queue(qca->net_dev);
+	/* SPI thread takes care of TX queue */
 
 	return 0;
 }
-- 
2.7.4