Bluetooth: remove *_bh usage from hci_dev_list and hci_cb_list

They don't need to disable interrupts anymore, we only run in process
context now.
Acked-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NGustavo F. Padovan <padovan@profusion.mobi>

include/net/bluetooth/hci_core.h

@@ -801,13 +801,13 @@ static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 
 	encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 
-	read_lock_bh(&hci_cb_list_lock);
+	read_lock(&hci_cb_list_lock);
 	list_for_each(p, &hci_cb_list) {
 		struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 		if (cb->security_cfm)
 			cb->security_cfm(conn, status, encrypt);
 	}
-	read_unlock_bh(&hci_cb_list_lock);
+	read_unlock(&hci_cb_list_lock);
 }
 
 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
@@ -823,26 +823,26 @@ static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 
 	hci_proto_encrypt_cfm(conn, status, encrypt);
 
-	read_lock_bh(&hci_cb_list_lock);
+	read_lock(&hci_cb_list_lock);
 	list_for_each(p, &hci_cb_list) {
 		struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 		if (cb->security_cfm)
 			cb->security_cfm(conn, status, encrypt);
 	}
-	read_unlock_bh(&hci_cb_list_lock);
+	read_unlock(&hci_cb_list_lock);
 }
 
 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 {
 	struct list_head *p;
 
-	read_lock_bh(&hci_cb_list_lock);
+	read_lock(&hci_cb_list_lock);
 	list_for_each(p, &hci_cb_list) {
 		struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 		if (cb->key_change_cfm)
 			cb->key_change_cfm(conn, status);
 	}
-	read_unlock_bh(&hci_cb_list_lock);
+	read_unlock(&hci_cb_list_lock);
 }
 
 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
@@ -850,13 +850,13 @@ static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 {
 	struct list_head *p;
 
-	read_lock_bh(&hci_cb_list_lock);
+	read_lock(&hci_cb_list_lock);
 	list_for_each(p, &hci_cb_list) {
 		struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 		if (cb->role_switch_cfm)
 			cb->role_switch_cfm(conn, status, role);
 	}
-	read_unlock_bh(&hci_cb_list_lock);
+	read_unlock(&hci_cb_list_lock);
 }
 
 int hci_register_cb(struct hci_cb *hcb);

net/bluetooth/hci_conn.c

@@ -487,7 +487,7 @@ struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src)
 
 	BT_DBG("%s -> %s", batostr(src), batostr(dst));
 
-	read_lock_bh(&hci_dev_list_lock);
+	read_lock(&hci_dev_list_lock);
 
 	list_for_each_entry(d, &hci_dev_list, list) {
 		if (!test_bit(HCI_UP, &d->flags) || test_bit(HCI_RAW, &d->flags))
@@ -512,7 +512,7 @@ struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src)
 	if (hdev)
 		hdev = hci_dev_hold(hdev);
 
-	read_unlock_bh(&hci_dev_list_lock);
+	read_unlock(&hci_dev_list_lock);
 	return hdev;
 }
 EXPORT_SYMBOL(hci_get_route);

net/bluetooth/hci_core.c

@@ -844,7 +844,7 @@ int hci_get_dev_list(void __user *arg)
 
 	dr = dl->dev_req;
 
-	read_lock_bh(&hci_dev_list_lock);
+	read_lock(&hci_dev_list_lock);
 	list_for_each_entry(hdev, &hci_dev_list, list) {
 		if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->flags))
 			cancel_delayed_work(&hdev->power_off);
@@ -858,7 +858,7 @@ int hci_get_dev_list(void __user *arg)
 		if (++n >= dev_num)
 			break;
 	}
-	read_unlock_bh(&hci_dev_list_lock);
+	read_unlock(&hci_dev_list_lock);
 
 	dl->dev_num = n;
 	size = sizeof(*dl) + n * sizeof(*dr);
@@ -1458,7 +1458,7 @@ int hci_register_dev(struct hci_dev *hdev)
 	 */
 	id = (hdev->dev_type == HCI_BREDR) ? 0 : 1;
 
-	write_lock_bh(&hci_dev_list_lock);
+	write_lock(&hci_dev_list_lock);
 
 	/* Find first available device id */
 	list_for_each(p, &hci_dev_list) {
@@ -1528,7 +1528,7 @@ int hci_register_dev(struct hci_dev *hdev)
 
 	atomic_set(&hdev->promisc, 0);
 
-	write_unlock_bh(&hci_dev_list_lock);
+	write_unlock(&hci_dev_list_lock);
 
 	hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND |
 							WQ_MEM_RECLAIM, 1);
@@ -1561,9 +1561,9 @@ int hci_register_dev(struct hci_dev *hdev)
 err_wqueue:
 	destroy_workqueue(hdev->workqueue);
 err:
-	write_lock_bh(&hci_dev_list_lock);
+	write_lock(&hci_dev_list_lock);
 	list_del(&hdev->list);
-	write_unlock_bh(&hci_dev_list_lock);
+	write_unlock(&hci_dev_list_lock);
 
 	return error;
 }
@@ -1576,9 +1576,9 @@ void hci_unregister_dev(struct hci_dev *hdev)
 
 	BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
 
-	write_lock_bh(&hci_dev_list_lock);
+	write_lock(&hci_dev_list_lock);
 	list_del(&hdev->list);
-	write_unlock_bh(&hci_dev_list_lock);
+	write_unlock(&hci_dev_list_lock);
 
 	hci_dev_do_close(hdev);
 
@@ -1830,9 +1830,9 @@ int hci_register_cb(struct hci_cb *cb)
 {
 	BT_DBG("%p name %s", cb, cb->name);
 
-	write_lock_bh(&hci_cb_list_lock);
+	write_lock(&hci_cb_list_lock);
 	list_add(&cb->list, &hci_cb_list);
-	write_unlock_bh(&hci_cb_list_lock);
+	write_unlock(&hci_cb_list_lock);
 
 	return 0;
 }
@@ -1842,9 +1842,9 @@ int hci_unregister_cb(struct hci_cb *cb)
 {
 	BT_DBG("%p name %s", cb, cb->name);
 
-	write_lock_bh(&hci_cb_list_lock);
+	write_lock(&hci_cb_list_lock);
 	list_del(&cb->list);
-	write_unlock_bh(&hci_cb_list_lock);
+	write_unlock(&hci_cb_list_lock);
 
 	return 0;
 }