From: Stefan Wahren Date: Fri, 4 Dec 2015 15:29:10 +0000 (+0100) Subject: net: qca_spi: fix transmit queue timeout handling X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=ed7d42e24effbd3681e909711a7a2119a85e9217;p=deliverable%2Flinux.git net: qca_spi: fix transmit queue timeout handling In case of a tx queue timeout every transmit is blocked until the QCA7000 resets himself and triggers a sync which makes the driver flushs the tx ring. So avoid this blocking situation by triggering the sync immediately after the timeout. Waking the queue doesn't make sense in this situation. Signed-off-by: Stefan Wahren Fixes: 291ab06ecf67 ("net: qualcomm: new Ethernet over SPI driver for QCA7000") Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c index ddb2c6c6ec94..689a4a5c8dcf 100644 --- a/drivers/net/ethernet/qualcomm/qca_spi.c +++ b/drivers/net/ethernet/qualcomm/qca_spi.c @@ -736,9 +736,8 @@ qcaspi_netdev_tx_timeout(struct net_device *dev) netdev_info(qca->net_dev, "Transmit timeout at %ld, latency %ld\n", jiffies, jiffies - dev->trans_start); qca->net_dev->stats.tx_errors++; - /* wake the queue if there is room */ - if (qcaspi_tx_ring_has_space(&qca->txr)) - netif_wake_queue(dev); + /* Trigger tx queue flush and QCA7000 reset */ + qca->sync = QCASPI_SYNC_UNKNOWN; } static int