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 <stefan.wahren@i2se.com>
Fixes: 291ab06ecf67 ("net: qualcomm: new Ethernet over SPI driver for QCA7000")
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
index ddb2c6c6ec94013efb5ada465d2c6446c34de5f0..689a4a5c8dcfc30fba2675e17293e98691648dd2 100644 (file)
--- 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