Change scsi_scan_mutex from global to per host, which is needed for
parallel SCSI probe.


 gr16_work-anton/drivers/scsi/hosts.c     |    2 ++
 gr16_work-anton/drivers/scsi/scsi_scan.c |   15 ++++-----------
 gr16_work-anton/include/scsi/scsi_host.h |    6 ++++++
 3 files changed, 12 insertions(+), 11 deletions(-)