Reviewed by: rgrimes MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D19485
The BUS_RESCAN() method rescans a single bus device checking for devices that have been added or removed from the bus. A new 'rescan' command is added to devctl(8) to trigger a rescan. Differential Revision: https://reviews.freebsd.org/D6016