net: cavium: liquidio: Remove deprecated create_workqueue

alloc_workqueue replaces deprecated create_workqueue().

A dedicated workqueue has been used since the workitem viz
(&lio->txq_status_wq.wk.work which maps to octnet_poll_check_txq_status)
is involved in a brief poll routine for checking transmit queue status
and is an intergral part of normal device operation.
WQ_MEM_RECLAIM has been set to guarantee forward progress under memory
pressure, which is a requirement here.
Since there are only a fixed number of work items, explicit concurrency
limit is unnecessary.

flush_workqueue is unnecessary since destroy_workqueue() itself calls
drain_workqueue() which flushes repeatedly till the workqueue
becomes empty.

Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index 8de79ae..655d89e 100644 (file)
--- a/drivers/net/ethernet/cavium/liquidio/lio_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -2036,7 +2036,8 @@ static inline void setup_tx_poll_fn(struct net_device *netdev)
        struct lio *lio = GET_LIO(netdev);
        struct octeon_device *oct = lio->oct_dev;
 
-       lio->txq_status_wq.wq = create_workqueue("txq-status");
+       lio->txq_status_wq.wq = alloc_workqueue("txq-status",
+                                               WQ_MEM_RECLAIM, 0);
        if (!lio->txq_status_wq.wq) {
                dev_err(&oct->pci_dev->dev, "unable to create cavium txq status wq\n");
                return;
@@ -2103,7 +2104,6 @@ static int liquidio_stop(struct net_device *netdev)
        send_rx_ctrl_cmd(lio, 0);
 
        cancel_delayed_work_sync(&lio->txq_status_wq.wk.work);
-       flush_workqueue(lio->txq_status_wq.wq);
        destroy_workqueue(lio->txq_status_wq.wq);
 
        if (lio->ptp_clock) {