diff --git a/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt b/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt
index c749dc297624..f16b99571af1 100644
--- a/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt
+++ b/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt
@@ -15,6 +15,7 @@ Required properties:
    * "brcm,bcm43438-bt"
    * "brcm,bcm4345c5"
    * "brcm,bcm43540-bt"
+   * "brcm,bcm4335a0"
 
 Optional properties:
 
diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c
index 2d2e6d862068..8e05706fe5d9 100644
--- a/drivers/bluetooth/btbcm.c
+++ b/drivers/bluetooth/btbcm.c
@@ -23,6 +23,7 @@
 #define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}})
 #define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
 #define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
+#define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}})
 #define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}})
 #define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}})
 
@@ -74,6 +75,7 @@ int btbcm_check_bdaddr(struct hci_dev *hdev)
 	    !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) ||
 	    !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
 	    !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) ||
+	    !bacmp(&bda->bdaddr, BDADDR_BCM4334B0) ||
 	    !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) ||
 	    !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) ||
 	    !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) {
@@ -326,6 +328,7 @@ struct bcm_subver_table {
 
 static const struct bcm_subver_table bcm_uart_subver_table[] = {
 	{ 0x4103, "BCM4330B1"	},	/* 002.001.003 */
+	{ 0x410d, "BCM4334B0"	},	/* 002.001.013 */
 	{ 0x410e, "BCM43341B0"	},	/* 002.001.014 */
 	{ 0x4204, "BCM2076B1"	},	/* 002.002.004 */
 	{ 0x4406, "BCM4324B3"	},	/* 002.004.006 */
@@ -339,6 +342,7 @@ static const struct bcm_subver_table bcm_uart_subver_table[] = {
 	{ 0x220e, "BCM20702A1"  },	/* 001.002.014 */
 	{ 0x4217, "BCM4329B1"   },	/* 002.002.023 */
 	{ 0x6106, "BCM4359C0"	},	/* 003.001.006 */
+	{ 0x4106, "BCM4335A0"	},	/* 002.001.006 */
 	{ }
 };
 
@@ -440,6 +444,12 @@ int btbcm_finalize(struct hci_dev *hdev)
 
 	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
 
+	/* Some devices ship with the controller default address.
+	 * Allow the bootloader to set a valid address through the
+	 * device tree.
+	 */
+	set_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(btbcm_finalize);
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 04a139e7793f..70e385987d41 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -1200,7 +1200,7 @@ static int btusb_open(struct hci_dev *hdev)
 	if (data->setup_on_usb) {
 		err = data->setup_on_usb(hdev);
 		if (err < 0)
-			return err;
+			goto setup_fail;
 	}
 
 	data->intf->needs_remote_wakeup = 1;
@@ -1239,6 +1239,7 @@ done:
 
 failed:
 	clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+setup_fail:
 	usb_autopm_put_interface(data->intf);
 	return err;
 }
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index 0f851c0dde7f..d2a6a4afdbbb 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -1425,6 +1425,7 @@ static const struct of_device_id bcm_bluetooth_of_match[] = {
 	{ .compatible = "brcm,bcm4330-bt" },
 	{ .compatible = "brcm,bcm43438-bt" },
 	{ .compatible = "brcm,bcm43540-bt" },
+	{ .compatible = "brcm,bcm4335a0" },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match);
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 7ff92dd4c53c..87691404d0c6 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1176,8 +1176,10 @@ struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
 	if (!conn)
 		return ERR_PTR(-ENOMEM);
 
-	if (hci_explicit_conn_params_set(hdev, dst, dst_type) < 0)
+	if (hci_explicit_conn_params_set(hdev, dst, dst_type) < 0) {
+		hci_conn_del(conn);
 		return ERR_PTR(-EBUSY);
+	}
 
 	conn->state = BT_CONNECT;
 	set_bit(HCI_CONN_SCANNING, &conn->flags);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 0cc9ce917222..9e19d5a3aac8 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1444,11 +1444,20 @@ static int hci_dev_do_open(struct hci_dev *hdev)
 
 	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 	    test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {
+		bool invalid_bdaddr;
+
 		hci_sock_dev_event(hdev, HCI_DEV_SETUP);
 
 		if (hdev->setup)
 			ret = hdev->setup(hdev);
 
+		/* The transport driver can set the quirk to mark the
+		 * BD_ADDR invalid before creating the HCI device or in
+		 * its setup callback.
+		 */
+		invalid_bdaddr = test_bit(HCI_QUIRK_INVALID_BDADDR,
+					  &hdev->quirks);
+
 		if (ret)
 			goto setup_failed;
 
@@ -1457,20 +1466,33 @@ static int hci_dev_do_open(struct hci_dev *hdev)
 				hci_dev_get_bd_addr_from_property(hdev);
 
 			if (bacmp(&hdev->public_addr, BDADDR_ANY) &&
-			    hdev->set_bdaddr)
+			    hdev->set_bdaddr) {
 				ret = hdev->set_bdaddr(hdev,
 						       &hdev->public_addr);
+
+				/* If setting of the BD_ADDR from the device
+				 * property succeeds, then treat the address
+				 * as valid even if the invalid BD_ADDR
+				 * quirk indicates otherwise.
+				 */
+				if (!ret)
+					invalid_bdaddr = false;
+			}
 		}
 
 setup_failed:
 		/* The transport driver can set these quirks before
 		 * creating the HCI device or in its setup callback.
 		 *
+		 * For the invalid BD_ADDR quirk it is possible that
+		 * it becomes a valid address if the bootloader does
+		 * provide it (see above).
+		 *
 		 * In case any of them is set, the controller has to
 		 * start up as unconfigured.
 		 */
 		if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) ||
-		    test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks))
+		    invalid_bdaddr)
 			hci_dev_set_flag(hdev, HCI_UNCONFIGURED);
 
 		/* For an unconfigured controller it is required to
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index da7fdbdf9c41..a845786258a0 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -4936,10 +4936,8 @@ void __l2cap_physical_cfm(struct l2cap_chan *chan, int result)
 	BT_DBG("chan %p, result %d, local_amp_id %d, remote_amp_id %d",
 	       chan, result, local_amp_id, remote_amp_id);
 
-	if (chan->state == BT_DISCONN || chan->state == BT_CLOSED) {
-		l2cap_chan_unlock(chan);
+	if (chan->state == BT_DISCONN || chan->state == BT_CLOSED)
 		return;
-	}
 
 	if (chan->state != BT_CONNECTED) {
 		l2cap_do_create(chan, result, local_amp_id, remote_amp_id);