Bluetooth: Convert idle timer to use delayed work

There is no need to use a timer since the entire Bluetooth subsystem
runs using workqueues these days.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 7 insertions, 15 deletions

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 8d1f466520a5..4e726505f52b 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -317,8 +317,10 @@ static void hci_conn_timeout(struct work_struct *work)
 }
 
 /* Enter sniff mode */
-static void hci_conn_enter_sniff_mode(struct hci_conn *conn)
+static void hci_conn_idle(struct work_struct *work)
 {
+        struct hci_conn *conn = container_of(work, struct hci_conn,
+                                             idle_work.work);
         struct hci_dev *hdev = conn->hdev;
 
         BT_DBG("hcon %p mode %d", conn, conn->mode);
@@ -352,15 +354,6 @@ static void hci_conn_enter_sniff_mode(struct hci_conn *conn)
         }
 }
 
-static void hci_conn_idle(unsigned long arg)
-{
-        struct hci_conn *conn = (void *) arg;
-
-        BT_DBG("hcon %p mode %d", conn, conn->mode);
-
-        hci_conn_enter_sniff_mode(conn);
-}
-
 static void hci_conn_auto_accept(struct work_struct *work)
 {
         struct hci_conn *conn = container_of(work, struct hci_conn,
@@ -416,7 +409,7 @@ struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst)
 
         INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout);
         INIT_DELAYED_WORK(&conn->auto_accept_work, hci_conn_auto_accept);
-        setup_timer(&conn->idle_timer, hci_conn_idle, (unsigned long)conn);
+        INIT_DELAYED_WORK(&conn->idle_work, hci_conn_idle);
 
         atomic_set(&conn->refcnt, 0);
 
@@ -437,10 +430,9 @@ int hci_conn_del(struct hci_conn *conn)
 
         BT_DBG("%s hcon %p handle %d", hdev->name, conn, conn->handle);
 
-        del_timer(&conn->idle_timer);
-
         cancel_delayed_work_sync(&conn->disc_work);
         cancel_delayed_work_sync(&conn->auto_accept_work);
+        cancel_delayed_work_sync(&conn->idle_work);
 
         if (conn->type == ACL_LINK) {
                 struct hci_conn *sco = conn->link;
@@ -920,8 +912,8 @@ void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active)
 
 timer:
         if (hdev->idle_timeout > 0)
-                mod_timer(&conn->idle_timer,
-                          jiffies + msecs_to_jiffies(hdev->idle_timeout));
+                queue_delayed_work(hdev->workqueue, &conn->idle_work,
+                                   msecs_to_jiffies(hdev->idle_timeout));
 }
 
 /* Drop all connection on the device */