[SCSI] lpfc: sparse NULL warnings

From: Randy Dunlap <rdunlap@xenotime.net>

Fix sparse warnings: use NULL instead of 0 for pointers:
drivers/scsi/lpfc/lpfc_els.c:827:56: warning: Using plain integer as NULL pointer
drivers/scsi/lpfc/lpfc_els.c:2781:18: warning: Using plain integer as NULL pointer
drivers/scsi/lpfc/lpfc_els.c:2782:18: warning: Using plain integer as NULL pointer
drivers/scsi/lpfc/lpfc_init.c:951:21: warning: Using plain integer as NULL pointer
drivers/scsi/lpfc/lpfc_init.c:956:20: warning: Using plain integer as NULL pointer

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Acked-by: James Smart <James.Smart@Emulex.Com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/lpfc/lpfc_els.c

@@ -821,7 +821,7 @@ lpfc_issue_els_plogi(struct lpfc_hba * phba, uint32_t did, uint8_t retry)
 	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */
 
 	cmdsize = (sizeof (uint32_t) + sizeof (struct serv_parm));
-	elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, 0, did,
+	elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, NULL, did,
 								ELS_CMD_PLOGI);
 	if (!elsiocb)
 		return 1;
@@ -2791,8 +2791,8 @@ lpfc_els_rsp_rps_acc(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 
 	ndlp = (struct lpfc_nodelist *) pmb->context2;
 	xri = (uint16_t) ((unsigned long)(pmb->context1));
-	pmb->context1 = 0;
-	pmb->context2 = 0;
+	pmb->context1 = NULL;
+	pmb->context2 = NULL;
 
 	if (mb->mbxStatus) {
 		mempool_free( pmb, phba->mbox_mem_pool);

drivers/scsi/lpfc/lpfc_init.c

@@ -939,12 +939,12 @@ lpfc_get_hba_model_desc(struct lpfc_hba * phba, uint8_t * mdp, uint8_t * descp)
 					"10-port ", "PCIe"};
 			break;
 		default:
-			m = (typeof(m)){ 0 };
+			m = (typeof(m)){ NULL };
 			break;
 		}
 		break;
 	default:
-		m = (typeof(m)){ 0 };
+		m = (typeof(m)){ NULL };
 		break;
 	}