It's not very useful to set a softc refcount around blocking read/write operations when the refcount doesn't protect the opens and closes.  Fix this, and don't actually let a time out happen: now ugen(4) devices do not get freed out from under the programs with them open.
It's not very useful to set a softc refcount around blocking read/write
operations when the refcount doesn't protect the opens and closes.  Fix
this, and don't actually let a time out happen: now ugen(4) devices do
not get freed out from under the programs with them open.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase