[PATCH v1] Bluetooth: btusb: Preserve event and ACL packet ordering

[Kiran K <kiran.k@intel.com>]

When force_poll_sync is enabled, commit 800fe5ec302e ("Bluetooth:
btusb: Add support for queuing during polling interval") defers ACL
delivery to the RX worker. The event path currently wakes that worker
before delivering the event, so queued ACL data can reach HCI first.

Deliver the event before waking the worker. This preserves the intended
event-first ordering and the event callback's return value.

Fixes: 800fe5ec302e ("Bluetooth: btusb: Add support for queuing during polling interval")
Signed-off-by: Kiran K <kiran.k@intel.com>
---
 drivers/bluetooth/btusb_main.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btusb_main.c b/drivers/bluetooth/btusb_main.c
index 1ede12515bcc..cccdfb0461fe 100644
--- a/drivers/bluetooth/btusb_main.c
+++ b/drivers/bluetooth/btusb_main.c
@@ -1311,13 +1311,16 @@ static inline void btusb_free_frags(struct btusb_data *data)
 static int btusb_recv_event(struct hci_dev *hdev, struct sk_buff *skb)
 {
 	struct btusb_data *data = hci_get_drvdata(hdev);
+	int err;
+
+	err = data->recv_event(hdev, skb);
 
 	if (data->intr_interval) {
 		/* Trigger dequeue immediately if an event is received */
 		schedule_delayed_work(&data->rx_work, 0);
 	}
 
-	return data->recv_event(hdev, skb);
+	return err;
 }
 
 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
-- 
2.54.0