[SCSI] lpfc 8.3.42: Fixed failure to allocate SCSI buffer on PPC64 platform for SLI4...

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 46c4f1b..9480c55 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -1000,9 +1000,12 @@ lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc)
                }
                memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
 
-               /* Page alignment is CRITICAL, double check to be sure */
-               if (((unsigned long)(psb->data) &
-                   (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0) {
+               /*
+                * 4K Page alignment is CRITICAL to BlockGuard, double check
+                * to be sure.
+                */
+               if (phba->cfg_enable_bg  && (((unsigned long)(psb->data) &
+                   (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {
                        pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
                                      psb->data, psb->dma_handle);
                        kfree(psb);