[RFC] Bluetooth: Convert MSFT filter HCI cmd to hci_sync

[Brian Gix <brian.gix@intel.com>]

The msft_set_filter_enable() command was using the deprecated
hci_request mechanism rather than hci_sync. This caused the warning error:
hci0: HCI_REQ-0xfcf0

Signed-off-by: Brian Gix <brian.gix@intel.com>
---
 net/bluetooth/msft.c | 36 +++++++++++-------------------------
 1 file changed, 11 insertions(+), 25 deletions(-)

diff --git a/net/bluetooth/msft.c b/net/bluetooth/msft.c
index bee6a4c656be..bf5cee48916c 100644
--- a/net/bluetooth/msft.c
+++ b/net/bluetooth/msft.c
@@ -743,17 +743,12 @@ __u64 msft_get_features(struct hci_dev *hdev)
 }
 
 static void msft_le_set_advertisement_filter_enable_cb(struct hci_dev *hdev,
-						       u8 status, u16 opcode,
-						       struct sk_buff *skb)
+						       void *user_data,
+						       u8 status)
 {
-	struct msft_cp_le_set_advertisement_filter_enable *cp;
-	struct msft_rp_le_set_advertisement_filter_enable *rp;
+	struct msft_cp_le_set_advertisement_filter_enable *cp = user_data;
 	struct msft_data *msft = hdev->msft_data;
 
-	rp = (struct msft_rp_le_set_advertisement_filter_enable *)skb->data;
-	if (skb->len < sizeof(*rp))
-		return;
-
 	/* Error 0x0C would be returned if the filter enabled status is
 	 * already set to whatever we were trying to set.
 	 * Although the default state should be disabled, some controller set
@@ -766,7 +761,6 @@ static void msft_le_set_advertisement_filter_enable_cb(struct hci_dev *hdev,
 
 	hci_dev_lock(hdev);
 
-	cp = hci_sent_cmd_data(hdev, hdev->msft_opcode);
 	msft->filter_enabled = cp->enable;
 
 	if (status == 0x0C)
@@ -804,31 +798,23 @@ int msft_remove_monitor(struct hci_dev *hdev, struct adv_monitor *monitor)
 	return msft_remove_monitor_sync(hdev, monitor);
 }
 
-void msft_req_add_set_filter_enable(struct hci_request *req, bool enable)
-{
-	struct hci_dev *hdev = req->hdev;
-	struct msft_cp_le_set_advertisement_filter_enable cp;
-
-	cp.sub_opcode = MSFT_OP_LE_SET_ADVERTISEMENT_FILTER_ENABLE;
-	cp.enable = enable;
-
-	hci_req_add(req, hdev->msft_opcode, sizeof(cp), &cp);
-}
-
 int msft_set_filter_enable(struct hci_dev *hdev, bool enable)
 {
-	struct hci_request req;
+	struct msft_cp_le_set_advertisement_filter_enable cp;
 	struct msft_data *msft = hdev->msft_data;
 	int err;
 
 	if (!msft)
 		return -EOPNOTSUPP;
 
-	hci_req_init(&req, hdev);
-	msft_req_add_set_filter_enable(&req, enable);
-	err = hci_req_run_skb(&req, msft_le_set_advertisement_filter_enable_cb);
+	cp.sub_opcode = MSFT_OP_LE_SET_ADVERTISEMENT_FILTER_ENABLE;
+	cp.enable = enable;
+	err = __hci_cmd_sync_status(hdev, hdev->msft_opcode, sizeof(cp), &cp,
+				    HCI_CMD_TIMEOUT);
+
+	msft_le_set_advertisement_filter_enable_cb(hdev, &cp, err);
 
-	return err;
+	return 0;
 }
 
 bool msft_curve_validity(struct hci_dev *hdev)
-- 
2.38.1