[PATCH 4/6] staging: dpaa2-ethsw: destroy workqueue after deregistering the notifiers

[Ioana Ciornei]

We should destroy the switch workqueue only after deregistering the
switchdev notifiers. Without this fix, we could end up with switchdev
notifications on a draining workqueue and also with a lock up since the
netdevice reference count is increased (in port_switchdev_event) and not
decreased ever (since the workqueue did not run).

Signed-off-by: Ioana Ciornei <ioana.ciornei@xxxxxxx>
---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index 83e6bd4a803b..9114437645a8 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -1628,8 +1628,6 @@ static int ethsw_remove(struct fsl_mc_device *sw_dev)
 
 	ethsw_teardown_irqs(sw_dev);
 
-	destroy_workqueue(ethsw->workqueue);
-
 	dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle);
 
 	for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
@@ -1640,6 +1638,9 @@ static int ethsw_remove(struct fsl_mc_device *sw_dev)
 	kfree(ethsw->ports);
 
 	ethsw_takedown(sw_dev);
+
+	destroy_workqueue(ethsw->workqueue);
+
 	fsl_mc_portal_free(ethsw->mc_io);
 
 	kfree(ethsw);
-- 
2.25.1