[PATCH v2] wifi: ath6kl: fix invalid workqueue flags in ath6kl_usb_create()

[wuyankun <wuyankun@uniontech.com>]

ath6kl_usb_create() currently creates ath6kl_wq with flags set to 0:

  alloc_workqueue("ath6kl_wq", 0, 0)

This triggers a runtime warning in __alloc_workqueue() because the queue is
created with neither WQ_PERCPU nor WQ_UNBOUND set:

  workqueue: ath6kl_wq is using neither WQ_PERCPU or WQ_UNBOUND.
  Setting WQ_PERCPU.

Set WQ_PERCPU explicitly to match the actual execution model and remove the
warning during device probe. No functional change intended.

Fixes: 21c05ca88a54 ("workqueue: Add warnings and ensure one among WQ_PERCPU or WQ_UNBOUND is present")
Reported-by: syzbot+f80c62f371ba6a1e7d79@syzkaller.appspotmail.com
Link: https://lore.kernel.org/all/6a289c01.39669fcc.33b062.00aa.GAE@google.com/T/
Signed-off-by: wuyankun <wuyankun@uniontech.com>
---
 drivers/net/wireless/ath/ath6kl/usb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath6kl/usb.c b/drivers/net/wireless/ath/ath6kl/usb.c
index 79c18f5ee02b..945984c3dbe6 100644
--- a/drivers/net/wireless/ath/ath6kl/usb.c
+++ b/drivers/net/wireless/ath/ath6kl/usb.c
@@ -636,7 +636,7 @@ static struct ath6kl_usb *ath6kl_usb_create(struct usb_interface *interface)
 	ar_usb = kzalloc_obj(struct ath6kl_usb);
 	if (ar_usb == NULL)
 		return NULL;
-	ar_usb->wq = alloc_workqueue("ath6kl_wq", 0, 0);
+	ar_usb->wq = alloc_workqueue("ath6kl_wq", WQ_PERCPU, 0);
 	if (!ar_usb->wq) {
 		kfree(ar_usb);
 		return NULL;
-- 
2.20.1