[PATCH v2 30/33] HID: logitech-hidpp: use alloc_ordered_workqueue() for FF queue

[Dmitry Torokhov]

create_singlethread_workqueue() is a deprecated wrapper around
alloc_ordered_workqueue() that unconditionally enables WQ_MEM_RECLAIM,
allocating a rescuer thread. Force-feedback packet submission does not
run on a memory-reclaim path, so allocate the send queue with
alloc_ordered_workqueue() and zero flags to preserve strict in-order
execution without unnecessary rescuer overhead.

Tested-by: Gideon Heinz <gideonheinz02@xxxxxxxxx>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
---
 drivers/hid/hid-logitech-hidpp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index 67b4f1112168..b6c7a951cc94 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -2791,7 +2791,7 @@ static int hidpp_ff_init(struct hidpp_device *hidpp, struct input_dev *dev)
 	/* init the hardware command queue */
 	atomic_set(&data->workqueue_size, 0);
 
-	data->wq = create_singlethread_workqueue("hidpp-ff-sendqueue");
+	data->wq = alloc_ordered_workqueue("hidpp-ff-sendqueue", 0);
 	if (!data->wq)
 		return -ENOMEM;
 

-- 
2.56.0.542.g3ef89b7020-goog