Bluetooth: convert tx_task to workqueue

This should simplify Bluetooth core processing a lot.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index d10a724..cd06406 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -535,7 +535,7 @@
 
 		if (test_bit(HCI_RAW, &hdev->flags) || (ogf == 0x3f)) {
 			skb_queue_tail(&hdev->raw_q, skb);
-			tasklet_schedule(&hdev->tx_task);
+			queue_work(hdev->workqueue, &hdev->tx_work);
 		} else {
 			skb_queue_tail(&hdev->cmd_q, skb);
 			queue_work(hdev->workqueue, &hdev->cmd_work);
@@ -547,7 +547,7 @@
 		}
 
 		skb_queue_tail(&hdev->raw_q, skb);
-		tasklet_schedule(&hdev->tx_task);
+		queue_work(hdev->workqueue, &hdev->tx_work);
 	}
 
 	err = len;