From: Brian Gix <brian.gix@intel.com>
Date: Wed, 27 Oct 2021 16:58:47 -0700
Subject: Bluetooth: hci_sync: Enable synch'd set_bredr
Patch-mainline: v5.17-rc1
Git-commit: 451d95a98c5a350da2f2c5447cc17115a5b94c8e
References: jsc#PED-1407

Uses previously written:
  hci_write_fast_connectable_sync
  hci_update_scan_sync
  hci_update_adv_data_sync

Signed-off-by: Brian Gix <brian.gix@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
 include/net/bluetooth/hci_sync.h |    1 
 net/bluetooth/hci_sync.c         |    2 -
 net/bluetooth/mgmt.c             |   72 ++++++++++++++++++---------------------
 3 files changed, 37 insertions(+), 38 deletions(-)

--- a/include/net/bluetooth/hci_sync.h
+++ b/include/net/bluetooth/hci_sync.h
@@ -69,6 +69,7 @@ int hci_update_passive_scan_sync(struct
 int hci_update_passive_scan(struct hci_dev *hdev);
 
 int hci_write_fast_connectable_sync(struct hci_dev *hdev, bool enable);
+int hci_update_scan_sync(struct hci_dev *hdev);
 
 int hci_dev_open_sync(struct hci_dev *hdev);
 int hci_dev_close_sync(struct hci_dev *hdev);
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -2262,7 +2262,7 @@ static int hci_write_scan_enable_sync(st
 					    HCI_CMD_TIMEOUT);
 }
 
-static int hci_update_scan_sync(struct hci_dev *hdev)
+int hci_update_scan_sync(struct hci_dev *hdev)
 {
 	u8 scan;
 
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -5953,20 +5953,14 @@ unlock:
 	return err;
 }
 
-static void set_bredr_complete(struct hci_dev *hdev, u8 status, u16 opcode)
+static void set_bredr_complete(struct hci_dev *hdev, void *data, int err)
 {
-	struct mgmt_pending_cmd *cmd;
-
-	bt_dev_dbg(hdev, "status 0x%02x", status);
-
-	hci_dev_lock(hdev);
+	struct mgmt_pending_cmd *cmd = data;
 
-	cmd = pending_find(MGMT_OP_SET_BREDR, hdev);
-	if (!cmd)
-		goto unlock;
+	bt_dev_dbg(hdev, "err %d", err);
 
-	if (status) {
-		u8 mgmt_err = mgmt_status(status);
+	if (err) {
+		u8 mgmt_err = mgmt_status(err);
 
 		/* We need to restore the flag if related HCI commands
 		 * failed.
@@ -5979,17 +5973,31 @@ static void set_bredr_complete(struct hc
 		new_settings(hdev, cmd->sk);
 	}
 
-	mgmt_pending_remove(cmd);
+	mgmt_pending_free(cmd);
+}
 
-unlock:
-	hci_dev_unlock(hdev);
+static int set_bredr_sync(struct hci_dev *hdev, void *data)
+{
+	int status;
+
+	status = hci_write_fast_connectable_sync(hdev, false);
+
+	if (!status)
+		status = hci_update_scan_sync(hdev);
+
+	/* Since only the advertising data flags will change, there
+	 * is no need to update the scan response data.
+	 */
+	if (!status)
+		status = hci_update_adv_data_sync(hdev, hdev->cur_adv_instance);
+
+	return status;
 }
 
 static int set_bredr(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
 {
 	struct mgmt_mode *cp = data;
 	struct mgmt_pending_cmd *cmd;
-	struct hci_request req;
 	int err;
 
 	bt_dev_dbg(hdev, "sock %p", sk);
@@ -6061,15 +6069,19 @@ static int set_bredr(struct sock *sk, st
 		}
 	}
 
-	if (pending_find(MGMT_OP_SET_BREDR, hdev)) {
-		err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
-				      MGMT_STATUS_BUSY);
-		goto unlock;
-	}
-
-	cmd = mgmt_pending_add(sk, MGMT_OP_SET_BREDR, hdev, data, len);
-	if (!cmd) {
+	cmd = mgmt_pending_new(sk, MGMT_OP_SET_BREDR, hdev, data, len);
+	if (!cmd)
 		err = -ENOMEM;
+	else
+		err = hci_cmd_sync_queue(hdev, set_bredr_sync, cmd,
+					 set_bredr_complete);
+
+	if (err < 0) {
+		mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
+				MGMT_STATUS_FAILED);
+		if (cmd)
+			mgmt_pending_free(cmd);
+
 		goto unlock;
 	}
 
@@ -6078,20 +6090,6 @@ static int set_bredr(struct sock *sk, st
 	 */
 	hci_dev_set_flag(hdev, HCI_BREDR_ENABLED);
 
-	hci_req_init(&req, hdev);
-
-	__hci_req_write_fast_connectable(&req, false);
-	__hci_req_update_scan(&req);
-
-	/* Since only the advertising data flags will change, there
-	 * is no need to update the scan response data.
-	 */
-	__hci_req_update_adv_data(&req, hdev->cur_adv_instance);
-
-	err = hci_req_run(&req, set_bredr_complete);
-	if (err < 0)
-		mgmt_pending_remove(cmd);
-
 unlock:
 	hci_dev_unlock(hdev);
 	return err;