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Subject[PATCH 5/9] iseries_veth: don't use flush_scheduled_work()
Date
flush_scheduled_work() is on its way out.  Remove its usage from
iseries_veth.

* Cancelling a delayed work, queueing it for immediate execution if
cancelled and then waiting for completion can be done by simply
calling flush_delayed_work_sync().

* Explicitly cancel cnx->statemachine_wq on module unload.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Santiago Leon <santil@linux.vnet.ibm.com>
Cc: netdev@vger.kernel.org
---
drivers/net/iseries_veth.c | 18 ++++--------------
1 files changed, 4 insertions(+), 14 deletions(-)
diff --git a/drivers/net/iseries_veth.c b/drivers/net/iseries_veth.c
index 63ac531..9ece1fd 100644
--- a/drivers/net/iseries_veth.c
+++ b/drivers/net/iseries_veth.c
@@ -885,17 +885,8 @@ static void veth_stop_connection(struct veth_lpar_connection *cnx)
veth_kick_statemachine(cnx);
spin_unlock_irq(&cnx->lock);

- /* There's a slim chance the reset code has just queued the
- * statemachine to run in five seconds. If so we need to cancel
- * that and requeue the work to run now. */
- if (cancel_delayed_work(&cnx->statemachine_wq)) {
- spin_lock_irq(&cnx->lock);
- veth_kick_statemachine(cnx);
- spin_unlock_irq(&cnx->lock);
- }
-
- /* Wait for the state machine to run. */
- flush_scheduled_work();
+ /* ensure the statemachine runs now and waits for its completion */
+ flush_delayed_work_sync(&cnx->statemachine_wq);
}

static void veth_destroy_connection(struct veth_lpar_connection *cnx)
@@ -1653,15 +1644,14 @@ static void __exit veth_module_cleanup(void)
/* Disconnect our "irq" to stop events coming from the Hypervisor. */
HvLpEvent_unregisterHandler(HvLpEvent_Type_VirtualLan);

- /* Make sure any work queued from Hypervisor callbacks is finished. */
- flush_scheduled_work();
-
for (i = 0; i < HVMAXARCHITECTEDLPS; ++i) {
cnx = veth_cnx[i];

if (!cnx)
continue;

+ /* Cancel work queued from Hypervisor callbacks */
+ cancel_delayed_work_sync(&cnx->statemachine_wq);
/* Remove the connection from sysfs */
kobject_del(&cnx->kobject);
/* Drop the driver's reference to the connection */
--
1.7.1


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