Bluetooth: Allow only one LE connection attempt

Only one outgoing LE connection attempt should be possible.
hci_connect() will now return -EBUSY in case there's another pending
outgoing connection.

Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@tieto.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 1458667..2fcced3 100644 (file)
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -483,6 +483,11 @@ struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
        if (type == LE_LINK) {
                le = hci_conn_hash_lookup_ba(hdev, LE_LINK, dst);
                if (!le) {
+                       le = hci_conn_hash_lookup_state(hdev, LE_LINK,
+                                                       BT_CONNECT);
+                       if (le)
+                               return ERR_PTR(-EBUSY);
+
                        le = hci_conn_add(hdev, LE_LINK, dst);
                        if (!le)
                                return ERR_PTR(-ENOMEM);