Fix ATAPI breakage introduced by r223443. It made SCSI commands to ATAPI device to never complete, that caused probe process (system boot) stuck.
Fix ATAPI breakage introduced by r223443. It made SCSI commands to ATAPI
device to never complete, that caused probe process (system boot) stuck.

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