Bluetooth: Add hci_cmd_sync_cancel to public API

After transfer errors it makes sense to cancel an ongoing synchronous
command that cannot complete anymore. To permit this, export the old
hci_req_sync_cancel function as hci_cmd_sync_cancel in the API.
Signed-off-by: Benjamin Berg <bberg@redhat.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

include/net/bluetooth/hci_sync.h

@@ -37,6 +37,7 @@ int __hci_cmd_sync_status_sk(struct hci_dev *hdev, u16 opcode, u32 plen,
 
 void hci_cmd_sync_init(struct hci_dev *hdev);
 void hci_cmd_sync_clear(struct hci_dev *hdev);
+void hci_cmd_sync_cancel(struct hci_dev *hdev, int err);
 
 int hci_cmd_sync_queue(struct hci_dev *hdev, hci_cmd_sync_work_func_t func,
 		       void *data, hci_cmd_sync_work_destroy_t destroy);

net/bluetooth/hci_request.c

@@ -111,22 +111,6 @@ void hci_req_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode,
 	}
 }
 
-void hci_req_sync_cancel(struct hci_dev *hdev, int err)
-{
-	bt_dev_dbg(hdev, "err 0x%2.2x", err);
-
-	if (hdev->req_status == HCI_REQ_PEND) {
-		hdev->req_result = err;
-		hdev->req_status = HCI_REQ_CANCELED;
-
-		cancel_delayed_work_sync(&hdev->cmd_timer);
-		cancel_delayed_work_sync(&hdev->ncmd_timer);
-		atomic_set(&hdev->cmd_cnt, 1);
-
-		wake_up_interruptible(&hdev->req_wait_q);
-	}
-}
-
 /* Execute request and wait for completion. */
 int __hci_req_sync(struct hci_dev *hdev, int (*func)(struct hci_request *req,
 						     unsigned long opt),
@@ -2708,7 +2692,7 @@ void hci_request_setup(struct hci_dev *hdev)
 
 void hci_request_cancel_all(struct hci_dev *hdev)
 {
-	hci_req_sync_cancel(hdev, ENODEV);
+	hci_cmd_sync_cancel(hdev, ENODEV);
 
 	cancel_work_sync(&hdev->discov_update);
 	cancel_work_sync(&hdev->scan_update);

net/bluetooth/hci_request.h

@@ -64,7 +64,6 @@ int hci_req_sync(struct hci_dev *hdev, int (*req)(struct hci_request *req,
 int __hci_req_sync(struct hci_dev *hdev, int (*func)(struct hci_request *req,
 						     unsigned long opt),
 		   unsigned long opt, u32 timeout, u8 *hci_status);
-void hci_req_sync_cancel(struct hci_dev *hdev, int err);
 
 struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, u32 plen,
 				const void *param);

net/bluetooth/hci_sync.c

@@ -335,6 +335,23 @@ void hci_cmd_sync_clear(struct hci_dev *hdev)
 	}
 }
 
+void hci_cmd_sync_cancel(struct hci_dev *hdev, int err)
+{
+	bt_dev_dbg(hdev, "err 0x%2.2x", err);
+
+	if (hdev->req_status == HCI_REQ_PEND) {
+		hdev->req_result = err;
+		hdev->req_status = HCI_REQ_CANCELED;
+
+		cancel_delayed_work_sync(&hdev->cmd_timer);
+		cancel_delayed_work_sync(&hdev->ncmd_timer);
+		atomic_set(&hdev->cmd_cnt, 1);
+
+		wake_up_interruptible(&hdev->req_wait_q);
+	}
+}
+EXPORT_SYMBOL(hci_cmd_sync_cancel);
+
 int hci_cmd_sync_queue(struct hci_dev *hdev, hci_cmd_sync_work_func_t func,
 		       void *data, hci_cmd_sync_work_destroy_t destroy)
 {