Bluetooth: Make hci_req_add returning void

Since no one checks the returning value of hci_req_add and HCI
request errors are now handled in hci_req_run, we can make hci_
req_add returning void.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

include/net/bluetooth/hci_core.h

@@ -1051,7 +1051,7 @@ struct hci_request {
 
 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
-int hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param);
+void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param);
 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
 void hci_req_cmd_status(struct hci_dev *hdev, u16 opcode, u8 status);
 

net/bluetooth/hci_core.c

@@ -2529,7 +2529,7 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param)
 }
 
 /* Queue a command to an asynchronous HCI request */
-int hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param)
+void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param)
 {
 	struct hci_dev *hdev = req->hdev;
 	struct sk_buff *skb;
@@ -2541,15 +2541,13 @@ int hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param)
 		BT_ERR("%s no memory for command (opcode 0x%4.4x)",
 		       hdev->name, opcode);
 		req->err = -ENOMEM;
-		return -ENOMEM;
+		return;
 	}
 
 	if (skb_queue_empty(&req->cmd_q))
 		bt_cb(skb)->req.start = true;
 
 	skb_queue_tail(&req->cmd_q, skb);
-
-	return 0;
 }
 
 /* Get data from the previously sent command */