Bluetooth: Make hci_disconnect() behave correctly for all states

There are a few places that don't explicitly check the connection
state before calling hci_disconnect(). To make this API do the right
thing take advantage of the new hci_abort_conn() API and also make
sure to only read the clock offset if we're really connected.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 665a52f..85b82f7 100644 (file)
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -226,8 +226,6 @@ static void hci_acl_create_connection(struct hci_conn *conn)
 
 int hci_disconnect(struct hci_conn *conn, __u8 reason)
 {
-       struct hci_cp_disconnect cp;
-
        BT_DBG("hcon %p", conn);
 
        /* When we are master of an established connection and it enters
@@ -235,7 +233,8 @@ int hci_disconnect(struct hci_conn *conn, __u8 reason)
         * current clock offset.  Processing of the result is done
         * within the event handling and hci_clock_offset_evt function.
         */
-       if (conn->type == ACL_LINK && conn->role == HCI_ROLE_MASTER) {
+       if (conn->type == ACL_LINK && conn->role == HCI_ROLE_MASTER &&
+           (conn->state == BT_CONNECTED || conn->state == BT_CONFIG)) {
                struct hci_dev *hdev = conn->hdev;
                struct hci_cp_read_clock_offset clkoff_cp;
 
@@ -244,11 +243,7 @@ int hci_disconnect(struct hci_conn *conn, __u8 reason)
                             &clkoff_cp);
        }
 
-       conn->state = BT_DISCONN;
-
-       cp.handle = cpu_to_le16(conn->handle);
-       cp.reason = reason;
-       return hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp);
+       return hci_abort_conn(conn, reason);
 }
 
 static void hci_add_sco(struct hci_conn *conn, __u16 handle)