[SCSI] zfcp: Remove UNIT_REGISTERED status flag
Use the device pointer in zfcp_unit for tracking if we have a registered SCSI device. With this approach, the flag ZFCP_STATUS_UNIT_REGISTERED is only redundant and can be removed. Acked-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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