sfc: Don't wake TX queues while they're being flushed

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/sfc/tx.c b/drivers/net/sfc/tx.c
index 9f97e44..b1e1907 100644 (file)
--- a/drivers/net/sfc/tx.c
+++ b/drivers/net/sfc/tx.c
@@ -400,7 +400,7 @@ void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index)
         * separates the update of read_count from the test of
         * stopped. */
        smp_mb();
-       if (unlikely(tx_queue->stopped)) {
+       if (unlikely(tx_queue->stopped) && likely(efx->port_enabled)) {
                fill_level = tx_queue->insert_count - tx_queue->read_count;
                if (fill_level < EFX_NETDEV_TX_THRESHOLD(tx_queue)) {
                        EFX_BUG_ON_PARANOID(!efx_dev_registered(efx));