diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 8a0c7a0..25ee27d 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -346,9 +346,6 @@
 
 	BT_DBG("hcon %p mode %d", conn, conn->mode);
 
-	if (test_bit(HCI_RAW, &hdev->flags))
-		return;
-
 	if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn))
 		return;
 
@@ -539,7 +536,6 @@
 
 	list_for_each_entry(d, &hci_dev_list, list) {
 		if (!test_bit(HCI_UP, &d->flags) ||
-		    test_bit(HCI_RAW, &d->flags) ||
 		    test_bit(HCI_USER_CHANNEL, &d->dev_flags) ||
 		    d->dev_type != HCI_BREDR)
 			continue;
@@ -1059,9 +1055,6 @@
 
 	BT_DBG("hcon %p mode %d", conn, conn->mode);
 
-	if (test_bit(HCI_RAW, &hdev->flags))
-		return;
-
 	if (conn->mode != HCI_CM_SNIFF)
 		goto timer;
 
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 9852449..50db020 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -2117,6 +2117,11 @@
 		goto done;
 	}
 
+	if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) {
+		err = -EOPNOTSUPP;
+		goto done;
+	}
+
 	if (hdev->dev_type != HCI_BREDR) {
 		err = -EOPNOTSUPP;
 		goto done;
@@ -2246,10 +2251,7 @@
 		ret = hdev->setup(hdev);
 
 	if (!ret) {
-		if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
-			set_bit(HCI_RAW, &hdev->flags);
-
-		if (!test_bit(HCI_RAW, &hdev->flags) &&
+		if (!test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks) &&
 		    !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags))
 			ret = __hci_init(hdev);
 	}
@@ -2286,7 +2288,7 @@
 		}
 
 		hdev->close(hdev);
-		hdev->flags = 0;
+		hdev->flags &= BIT(HCI_RAW);
 	}
 
 done:
@@ -2305,6 +2307,21 @@
 	if (!hdev)
 		return -ENODEV;
 
+	/* Devices that are marked for raw-only usage can only be powered
+	 * up as user channel. Trying to bring them up as normal devices
+	 * will result into a failure. Only user channel operation is
+	 * possible.
+	 *
+	 * When this function is called for a user channel, the flag
+	 * HCI_USER_CHANNEL will be set first before attempting to
+	 * open the device.
+	 */
+	if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks) &&
+	    !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) {
+		err = -EOPNOTSUPP;
+		goto done;
+	}
+
 	/* We need to ensure that no other power on/off work is pending
 	 * before proceeding to call hci_dev_do_open. This is
 	 * particularly important if the setup procedure has not yet
@@ -2321,8 +2338,8 @@
 
 	err = hci_dev_do_open(hdev);
 
+done:
 	hci_dev_put(hdev);
-
 	return err;
 }
 
@@ -2374,7 +2391,7 @@
 	/* Reset device */
 	skb_queue_purge(&hdev->cmd_q);
 	atomic_set(&hdev->cmd_cnt, 1);
-	if (!test_bit(HCI_RAW, &hdev->flags) &&
+	if (!test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks) &&
 	    !test_bit(HCI_AUTO_OFF, &hdev->dev_flags) &&
 	    test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) {
 		set_bit(HCI_INIT, &hdev->flags);
@@ -2405,7 +2422,7 @@
 	hdev->close(hdev);
 
 	/* Clear flags */
-	hdev->flags = 0;
+	hdev->flags &= BIT(HCI_RAW);
 	hdev->dev_flags &= ~HCI_PERSISTENT_MASK;
 
 	if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) {
@@ -2474,6 +2491,11 @@
 		goto done;
 	}
 
+	if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) {
+		ret = -EOPNOTSUPP;
+		goto done;
+	}
+
 	/* Drop queues */
 	skb_queue_purge(&hdev->rx_q);
 	skb_queue_purge(&hdev->cmd_q);
@@ -2489,8 +2511,7 @@
 	atomic_set(&hdev->cmd_cnt, 1);
 	hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0;
 
-	if (!test_bit(HCI_RAW, &hdev->flags))
-		ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT);
+	ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT);
 
 done:
 	hci_req_unlock(hdev);
@@ -2512,6 +2533,11 @@
 		goto done;
 	}
 
+	if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) {
+		ret = -EOPNOTSUPP;
+		goto done;
+	}
+
 	memset(&hdev->stat, 0, sizeof(struct hci_dev_stats));
 
 done:
@@ -2537,6 +2563,11 @@
 		goto done;
 	}
 
+	if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) {
+		err = -EOPNOTSUPP;
+		goto done;
+	}
+
 	if (hdev->dev_type != HCI_BREDR) {
 		err = -EOPNOTSUPP;
 		goto done;
@@ -2760,8 +2791,10 @@
 				   HCI_AUTO_OFF_TIMEOUT);
 	}
 
-	if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags))
-		mgmt_index_added(hdev);
+	if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) {
+		if (!test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
+			mgmt_index_added(hdev);
+	}
 }
 
 static void hci_power_off(struct work_struct *work)
@@ -3887,6 +3920,13 @@
 	list_add(&hdev->list, &hci_dev_list);
 	write_unlock(&hci_dev_list_lock);
 
+	/* Devices that are marked for raw-only usage need to set
+	 * the HCI_RAW flag to indicate that only user channel is
+	 * supported.
+	 */
+	if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
+		set_bit(HCI_RAW, &hdev->flags);
+
 	hci_notify(hdev, HCI_DEV_REG);
 	hci_dev_hold(hdev);
 
@@ -3929,7 +3969,8 @@
 	cancel_work_sync(&hdev->power_on);
 
 	if (!test_bit(HCI_INIT, &hdev->flags) &&
-	    !test_bit(HCI_SETUP, &hdev->dev_flags)) {
+	    !test_bit(HCI_SETUP, &hdev->dev_flags) &&
+	    !test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) {
 		hci_dev_lock(hdev);
 		mgmt_index_removed(hdev);
 		hci_dev_unlock(hdev);
@@ -4694,7 +4735,7 @@
 
 static void __check_timeout(struct hci_dev *hdev, unsigned int cnt)
 {
-	if (!test_bit(HCI_RAW, &hdev->flags)) {
+	if (!test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) {
 		/* ACL tx timeout must be longer than maximum
 		 * link supervision timeout (40.9 seconds) */
 		if (!cnt && time_after(jiffies, hdev->acl_last_tx +
@@ -4877,7 +4918,7 @@
 	if (!hci_conn_num(hdev, LE_LINK))
 		return;
 
-	if (!test_bit(HCI_RAW, &hdev->flags)) {
+	if (!test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) {
 		/* LE tx timeout must be longer than maximum
 		 * link supervision timeout (40.9 seconds) */
 		if (!hdev->le_cnt && hdev->le_pkts &&
@@ -5122,8 +5163,7 @@
 			hci_send_to_sock(hdev, skb);
 		}
 
-		if (test_bit(HCI_RAW, &hdev->flags) ||
-		    test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) {
+		if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) {
 			kfree_skb(skb);
 			continue;
 		}
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 80d25c1..54e4e8f 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -453,7 +453,8 @@
 
 	if (hdev) {
 		if (hci_pi(sk)->channel == HCI_CHANNEL_USER) {
-			mgmt_index_added(hdev);
+			if (!test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
+				mgmt_index_added(hdev);
 			clear_bit(HCI_USER_CHANNEL, &hdev->dev_flags);
 			hci_dev_close(hdev->id);
 		}
@@ -517,6 +518,9 @@
 	if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags))
 		return -EBUSY;
 
+	if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
+		return -EOPNOTSUPP;
+
 	if (hdev->dev_type != HCI_BREDR)
 		return -EOPNOTSUPP;
 
@@ -702,12 +706,14 @@
 			goto done;
 		}
 
-		mgmt_index_removed(hdev);
+		if (!test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
+			mgmt_index_removed(hdev);
 
 		err = hci_dev_open(hdev->id);
 		if (err) {
 			clear_bit(HCI_USER_CHANNEL, &hdev->dev_flags);
-			mgmt_index_added(hdev);
+			if (!test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
+				mgmt_index_added(hdev);
 			hci_dev_put(hdev);
 			goto done;
 		}
@@ -960,7 +966,7 @@
 			goto drop;
 		}
 
-		if (test_bit(HCI_RAW, &hdev->flags) || (ogf == 0x3f)) {
+		if (ogf == 0x3f) {
 			skb_queue_tail(&hdev->raw_q, skb);
 			queue_work(hdev->workqueue, &hdev->tx_work);
 		} else {
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 6faa461..41b1aec 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -347,6 +347,9 @@
 		if (test_bit(HCI_USER_CHANNEL, &d->dev_flags))
 			continue;
 
+		if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
+			continue;
+
 		if (d->dev_type == HCI_BREDR) {
 			rp->index[count++] = cpu_to_le16(d->id);
 			BT_DBG("Added hci%u", d->id);
@@ -5066,7 +5069,8 @@
 		}
 
 		if (test_bit(HCI_SETUP, &hdev->dev_flags) ||
-		    test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) {
+		    test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) ||
+		    test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) {
 			err = cmd_status(sk, index, opcode,
 					 MGMT_STATUS_INVALID_INDEX);
 			goto done;