Bluetooth: Handle bulk URBs in btusb driver from notify callback

With the addition of usb_unlink_anchored_urbs() it is possible to fully
control the bulk URBs from the notify callback. There is no need to
schedule work and so only do this for the ISOC URBs.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 3c85f9b..9ca9520 100644 (file)
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -680,8 +680,19 @@ static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 
        BT_DBG("%s evt %d", hdev->name, evt);
 
-       if (evt == HCI_NOTIFY_CONN_ADD || evt == HCI_NOTIFY_CONN_DEL)
-               schedule_work(&data->work);
+       if (hdev->conn_hash.acl_num > 0) {
+               if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
+                       if (btusb_submit_bulk_urb(hdev, GFP_ATOMIC) < 0)
+                               clear_bit(BTUSB_BULK_RUNNING, &data->flags);
+                       else
+                               btusb_submit_bulk_urb(hdev, GFP_ATOMIC);
+               }
+       } else {
+               clear_bit(BTUSB_BULK_RUNNING, &data->flags);
+               usb_unlink_anchored_urbs(&data->bulk_anchor);
+       }
+
+       schedule_work(&data->work);
 }
 
 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
@@ -732,18 +743,6 @@ static void btusb_work(struct work_struct *work)
        struct btusb_data *data = container_of(work, struct btusb_data, work);
        struct hci_dev *hdev = data->hdev;
 
-       if (hdev->conn_hash.acl_num > 0) {
-               if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
-                       if (btusb_submit_bulk_urb(hdev, GFP_KERNEL) < 0)
-                               clear_bit(BTUSB_BULK_RUNNING, &data->flags);
-                       else
-                               btusb_submit_bulk_urb(hdev, GFP_KERNEL);
-               }
-       } else {
-               clear_bit(BTUSB_BULK_RUNNING, &data->flags);
-               usb_kill_anchored_urbs(&data->bulk_anchor);
-       }
-
        if (hdev->conn_hash.sco_num > 0) {
                if (data->isoc_altsetting != 2) {
                        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);