cciss: add support for multi lun tape devices
This patch adds support for multi-lun devices in a SAS environment. It's required for the support of media changers. Signed-off-by: NStephen M. Cameron <scameron@beardog.cca.cpqcorp.net> Signed-off-by: NMike Miller <mike.miller@hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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