[PATCH AUTOSEL for-4.9 22/53] scsi: lpfc: Add missing memory barrier

From: James Smart [ Upstream commit 6b3b3bdb83b4ad51252d21bb13596db879e51850 ] On loosely ordered memory systems (PPC for example), the WQE elements were being updated in memory, but not necessarily flushed before the separate doorbell was written to hw which would

[PATCH AUTOSEL for-4.9 22/53] scsi: lpfc: Add missing memory barrier

From: James Smart [ Upstream commit 6b3b3bdb83b4ad51252d21bb13596db879e51850 ] On loosely ordered memory systems (PPC for example), the WQE elements were being updated in memory, but not necessarily flushed before the separate doorbell was written to hw which would cause hw to dma the WQE