Hi all, this series cleans up various abuses of the bsg interfaces, and then splits bsg for SCSI passthrough from bsg for arbitrary transport passthrough. This removes the scsi_request abuse in bsg-lib that is very confusing, and also makes sure we can sanity check the requests we get. The current code will happily execute scsi commands against bsg-lib queues, and transport pass through against scsi nodes, without any indication to the driver that we are doing the wrong thing. The series includes the fix from Bejamin as the first patch as I rebased on top of it, but that one really needs to got into 4.14 ASAP.
