[PATCH v15 12/13] Bluetooth: Allow usb to auto-suspend when SCO use non-HCI transport

[Kiran K <kiran.k@xxxxxxxxx>]

From: Chethan T N <chethan.tumkur.narayan@xxxxxxxxx>

Currently usb tranport is not allowed to suspend when SCO over
HCI tranport is active.

This patch shall enable the usb tranport to suspend when SCO
link use non-HCI transport.

Signed-off-by: Chethan T N <chethan.tumkur.narayan@xxxxxxxxx>
---

Notes:
    * changes in v15:
    - No changes
    
    * changes in v14:
     - Address review comments
    
    * changes in v13:
     - suspend usb in HFP offload use case

 net/bluetooth/hci_event.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index b48e24629fa4..fdf51f89754a 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -4444,6 +4444,7 @@ static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
 {
 	struct hci_ev_sync_conn_complete *ev = (void *) skb->data;
 	struct hci_conn *conn;
+	unsigned int notify_evt;
 
 	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
 
@@ -4518,15 +4519,21 @@ static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
 
 	switch (ev->air_mode) {
 	case 0x02:
-		if (hdev->notify)
-			hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
+		notify_evt = HCI_NOTIFY_ENABLE_SCO_CVSD;
 		break;
 	case 0x03:
-		if (hdev->notify)
-			hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
+		notify_evt = HCI_NOTIFY_ENABLE_SCO_TRANSP;
 		break;
 	}
 
+	/* Notify only in case of SCO over HCI transport data path which
+	 * is zero and non-zero value shall be non-HCI transport data path
+	 */
+	if (conn->codec.data_path == 0) {
+		if (hdev->notify)
+			hdev->notify(hdev, notify_evt);
+	}
+
 	hci_connect_cfm(conn, ev->status);
 	if (ev->status)
 		hci_conn_del(conn);
-- 
2.17.1