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>

4 files changed, 13 insertions, 19 deletions

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 051fd7fd2992..5d1bb51c43c3 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -197,7 +197,7 @@ struct hci_dev {
 
         struct work_struct      rx_work;
         struct work_struct      cmd_work;
-        struct tasklet_struct   tx_task;
+        struct work_struct      tx_work;
 
         struct sk_buff_head     rx_q;
         struct sk_buff_head     raw_q;
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index e2db2551b158..2b20941ebcb1 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -58,7 +58,7 @@ int enable_hs;
 
 static void hci_rx_work(struct work_struct *work);
 static void hci_cmd_work(struct work_struct *work);
-static void hci_tx_task(unsigned long arg);
+static void hci_tx_work(struct work_struct *work);
 
 static DEFINE_MUTEX(hci_task_lock);
 
@@ -547,7 +547,7 @@ int hci_dev_open(__u16 dev)
                 }
         } else {
                 /* Init failed, cleanup */
-                tasklet_kill(&hdev->tx_task);
+                flush_work(&hdev->tx_work);
                 flush_work(&hdev->cmd_work);
                 flush_work(&hdev->rx_work);
 
@@ -585,8 +585,8 @@ static int hci_dev_do_close(struct hci_dev *hdev)
                 return 0;
         }
 
-        /* Kill RX and TX tasks */
-        tasklet_kill(&hdev->tx_task);
+        /* Flush RX and TX works */
+        flush_work(&hdev->tx_work);
         flush_work(&hdev->rx_work);
 
         if (hdev->discov_timeout > 0) {
@@ -672,7 +672,6 @@ int hci_dev_reset(__u16 dev)
                 return -ENODEV;
 
         hci_req_lock(hdev);
-        tasklet_disable(&hdev->tx_task);
 
         if (!test_bit(HCI_UP, &hdev->flags))
                 goto done;
@@ -697,7 +696,6 @@ int hci_dev_reset(__u16 dev)
                                         msecs_to_jiffies(HCI_INIT_TIMEOUT));
 
 done:
-        tasklet_enable(&hdev->tx_task);
         hci_req_unlock(hdev);
         hci_dev_put(hdev);
         return ret;
@@ -1459,8 +1457,8 @@ int hci_register_dev(struct hci_dev *hdev)
 
         INIT_WORK(&hdev->rx_work, hci_rx_work);
         INIT_WORK(&hdev->cmd_work, hci_cmd_work);
+        INIT_WORK(&hdev->tx_work, hci_tx_work);
 
-        tasklet_init(&hdev->tx_task, hci_tx_task, (unsigned long) hdev);
 
         skb_queue_head_init(&hdev->rx_q);
         skb_queue_head_init(&hdev->cmd_q);
@@ -2012,7 +2010,7 @@ void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags)
 
         hci_queue_acl(conn, &chan->data_q, skb, flags);
 
-        tasklet_schedule(&hdev->tx_task);
+        queue_work(hdev->workqueue, &hdev->tx_work);
 }
 EXPORT_SYMBOL(hci_send_acl);
 
@@ -2035,7 +2033,7 @@ void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb)
         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 
         skb_queue_tail(&conn->data_q, skb);
-        tasklet_schedule(&hdev->tx_task);
+        queue_work(hdev->workqueue, &hdev->tx_work);
 }
 EXPORT_SYMBOL(hci_send_sco);
 
@@ -2399,9 +2397,9 @@ static inline void hci_sched_le(struct hci_dev *hdev)
                 hci_prio_recalculate(hdev, LE_LINK);
 }
 
-static void hci_tx_task(unsigned long arg)
+static void hci_tx_work(struct work_struct *work)
 {
-        struct hci_dev *hdev = (struct hci_dev *) arg;
+        struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work);
         struct sk_buff *skb;
 
         mutex_lock(&hci_task_lock);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 23466bb48423..74f758363c2d 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2239,8 +2239,6 @@ static inline void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *s
                 return;
         }
 
-        tasklet_disable(&hdev->tx_task);
-
         for (i = 0, ptr = (__le16 *) skb->data; i < ev->num_hndl; i++) {
                 struct hci_conn *conn;
                 __u16  handle, count;
@@ -2274,9 +2272,7 @@ static inline void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *s
                 }
         }
 
-        tasklet_schedule(&hdev->tx_task);
-
-        tasklet_enable(&hdev->tx_task);
+        queue_work(hdev->workqueue, &hdev->tx_work);
 }
 
 static inline void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index d10a724810ec..cd064068d94a 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -535,7 +535,7 @@ static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
 
                 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 @@ static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
                 }
 
                 skb_queue_tail(&hdev->raw_q, skb);
-                tasklet_schedule(&hdev->tx_task);
+                queue_work(hdev->workqueue, &hdev->tx_work);
         }
 
         err = len;