diff options
-rw-r--r-- | libs/ardour/io.cc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libs/ardour/io.cc b/libs/ardour/io.cc index 46c5d7b8c5..a3549f0a1d 100644 --- a/libs/ardour/io.cc +++ b/libs/ardour/io.cc @@ -148,7 +148,9 @@ IO::silence (framecnt_t nframes) /* io_lock, not taken: function must be called from Session::process() calltree */ for (PortSet::iterator i = _ports.begin(); i != _ports.end(); ++i) { - i->get_buffer(nframes).silence (nframes); + if (i->port_handle ()) { + i->get_buffer(nframes).silence (nframes); + } } } |