Bluetooth: hci_conn: Fix running bis_cleanup for hci_conn->type PA_LINK

JIRA: https://issues.redhat.com/browse/RHEL-107922

commit d36349e
Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date:   Mon Jul 28 13:51:01 2025 -0400

    Bluetooth: hci_conn: Fix running bis_cleanup for hci_conn->type PA_LINK

    Connections with type of PA_LINK shall be considered temporary just to
    track the lifetime of PA Sync setup, once the BIG Sync is established
    and connection are created with BIS_LINK the existing PA_LINK
    connection shall not longer use bis_cleanup otherwise it terminates the
    PA Sync when that shall be left to BIS_LINK connection to do it.

    Fixes: a7bcffc ("Bluetooth: Add PA_LINK to distinguish BIG sync and PA sync connections")
    Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Signed-off-by: David Marlin <dmarlin@redhat.com>

Author: damarlin

net/bluetooth/hci_conn.c

@@ -830,7 +830,17 @@ static void bis_cleanup(struct hci_conn *conn)
 		/* Check if ISO connection is a BIS and terminate advertising
 		 * set and BIG if there are no other connections using it.
 		 */
-		bis = hci_conn_hash_lookup_big(hdev, conn->iso_qos.bcast.big);
+		bis = hci_conn_hash_lookup_big_state(hdev,
+						     conn->iso_qos.bcast.big,
+						     BT_CONNECTED,
+						     HCI_ROLE_MASTER);
+		if (bis)
+			return;
+
+		bis = hci_conn_hash_lookup_big_state(hdev,
+						     conn->iso_qos.bcast.big,
+						     BT_CONNECT,
+						     HCI_ROLE_MASTER);
 		if (bis)
 			return;
 

net/bluetooth/hci_event.c

@@ -6952,9 +6952,14 @@ static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
 				continue;
 		}
 
-		if (ev->status != 0x42)
+		if (ev->status != 0x42) {
 			/* Mark PA sync as established */
 			set_bit(HCI_CONN_PA_SYNC, &bis->flags);
+			/* Reset cleanup callback of PA Sync so it doesn't
+			 * terminate the sync when deleting the connection.
+			 */
+			conn->cleanup = NULL;
+		}
 
 		bis->sync_handle = conn->sync_handle;
 		bis->iso_qos.bcast.big = ev->handle;