James,

A recent change added some MDS processing in the lpfc_drain_txq
routine that relies on the fcp_wq being allocated. For nvmet operation
the fcp_wq is not allocated because it can only be an nvme-target.
When the original MDS support was added LS_MDS_LOOPBACK was defined
wrong, (0x16) it should have been 0x10 (decimal value used for hex
setting). This incorrect value allowed MDS_LOOPBACK to be set
simultaneously with LS_NPIV_FAB_SUPPORTED, causing the driver to crash
when it accesses the non-existent fcp_wq.

Correct the bad value setting for LS_MDS_LOOPBACK.

Applied to 4.19/scsi-fixes, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering