Bluetooth: rename hci_conn_put to hci_conn_drop

We use _get() and _put() for device ref-counting in the kernel. However,
hci_conn_put() is _not_ used for ref-counting, hence, rename it to
hci_conn_drop() so we can later fix ref-counting and introduce
hci_conn_put().

hci_conn_hold() and hci_conn_put() are currently used to manage how long a
connection should be held alive. When the last user drops the connection,
we spawn a delayed work that performs the disconnect. Obviously, this has
nothing to do with ref-counting for the _object_ but rather for the
keep-alive of the connection.

But we really _need_ proper ref-counting for the _object_ to allow
connection-users like rfcomm-tty, HIDP or others.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

1 files changed, 18 insertions, 18 deletions

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 0a2b128d..2cf28b1 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1190,7 +1190,7 @@ static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
 	if (conn) {
 		if (conn->state == BT_CONFIG) {
 			hci_proto_connect_cfm(conn, status);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		}
 	}
 
@@ -1217,7 +1217,7 @@ static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
 	if (conn) {
 		if (conn->state == BT_CONFIG) {
 			hci_proto_connect_cfm(conn, status);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		}
 	}
 
@@ -1379,7 +1379,7 @@ static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
 	if (conn) {
 		if (conn->state == BT_CONFIG) {
 			hci_proto_connect_cfm(conn, status);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		}
 	}
 
@@ -1406,7 +1406,7 @@ static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
 	if (conn) {
 		if (conn->state == BT_CONFIG) {
 			hci_proto_connect_cfm(conn, status);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		}
 	}
 
@@ -1860,7 +1860,7 @@ static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		} else {
 			conn->state = BT_CONNECT2;
 			hci_proto_connect_cfm(conn, 0);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		}
 	} else {
 		/* Connection rejected */
@@ -1967,14 +1967,14 @@ static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		} else {
 			conn->state = BT_CONNECTED;
 			hci_proto_connect_cfm(conn, ev->status);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		}
 	} else {
 		hci_auth_cfm(conn, ev->status);
 
 		hci_conn_hold(conn);
 		conn->disc_timeout = HCI_DISCONN_TIMEOUT;
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	}
 
 	if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
@@ -2058,7 +2058,7 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
 
 		if (ev->status && conn->state == BT_CONNECTED) {
 			hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 			goto unlock;
 		}
 
@@ -2067,7 +2067,7 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
 				conn->state = BT_CONNECTED;
 
 			hci_proto_connect_cfm(conn, ev->status);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		} else
 			hci_encrypt_cfm(conn, ev->status, ev->encrypt);
 	}
@@ -2142,7 +2142,7 @@ static void hci_remote_features_evt(struct hci_dev *hdev,
 	if (!hci_outgoing_auth_needed(hdev, conn)) {
 		conn->state = BT_CONNECTED;
 		hci_proto_connect_cfm(conn, ev->status);
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	}
 
 unlock:
@@ -2682,7 +2682,7 @@ static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
 	if (conn->state == BT_CONNECTED) {
 		hci_conn_hold(conn);
 		conn->disc_timeout = HCI_PAIRING_TIMEOUT;
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	}
 
 	if (!test_bit(HCI_PAIRABLE, &hdev->dev_flags))
@@ -2785,7 +2785,7 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		if (ev->key_type != HCI_LK_CHANGED_COMBINATION)
 			conn->key_type = ev->key_type;
 
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	}
 
 	if (test_bit(HCI_LINK_KEYS, &hdev->dev_flags))
@@ -2954,7 +2954,7 @@ static void hci_remote_ext_features_evt(struct hci_dev *hdev,
 	if (!hci_outgoing_auth_needed(hdev, conn)) {
 		conn->state = BT_CONNECTED;
 		hci_proto_connect_cfm(conn, ev->status);
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	}
 
 unlock:
@@ -3087,7 +3087,7 @@ static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
 
 	if (ev->status && conn->state == BT_CONNECTED) {
 		hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 		goto unlock;
 	}
 
@@ -3096,13 +3096,13 @@ static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
 			conn->state = BT_CONNECTED;
 
 		hci_proto_connect_cfm(conn, ev->status);
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	} else {
 		hci_auth_cfm(conn, ev->status);
 
 		hci_conn_hold(conn);
 		conn->disc_timeout = HCI_DISCONN_TIMEOUT;
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	}
 
 unlock:
@@ -3363,7 +3363,7 @@ static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
 		mgmt_auth_failed(hdev, &conn->dst, conn->type, conn->dst_type,
 				 ev->status);
 
-	hci_conn_put(conn);
+	hci_conn_drop(conn);
 
 unlock:
 	hci_dev_unlock(hdev);
@@ -3451,7 +3451,7 @@ static void hci_phy_link_complete_evt(struct hci_dev *hdev,
 
 	hci_conn_hold(hcon);
 	hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
-	hci_conn_put(hcon);
+	hci_conn_drop(hcon);
 
 	hci_conn_hold_device(hcon);
 	hci_conn_add_sysfs(hcon);