[PATCH v2 1/1] scsi: lpfc: Do not abuse UUID APIs

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

The lpfc_vmid_host_uuid is not defined as uuid_t and its usage is not
the same as for uuid_t operations (like exporting or importing).
Hence replace call to uuid_is_null() by respective memchr_inv() without
abusing casting.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
v2: fixed the logic: memchr_inv() returns "true" when uuid_is_null() returns false.
 drivers/scsi/lpfc/lpfc_els.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 2bad9954c355..1e74ae65768d 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -1332,7 +1332,7 @@ lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 	if (phba->cfg_vmid_priority_tagging) {
 		sp->cmn.priority_tagging = 1;
 		/* lpfc_vmid_host_uuid is combination of wwpn and wwnn */
-		if (uuid_is_null((uuid_t *)vport->lpfc_vmid_host_uuid)) {
+		if (!memchr_inv(vport->lpfc_vmid_host_uuid, 0, LPFC_COMPRESS_VMID_SIZE)) {
 			memcpy(vport->lpfc_vmid_host_uuid, phba->wwpn,
 			       sizeof(phba->wwpn));
 			memcpy(&vport->lpfc_vmid_host_uuid[8], phba->wwnn,
@@ -12331,7 +12331,7 @@ lpfc_vmid_uvem(struct lpfc_vport *vport,
 	elsiocb->vmid_tag.vmid_context = vmid_context;
 	pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
 
-	if (uuid_is_null((uuid_t *)vport->lpfc_vmid_host_uuid))
+	if (!memchr_inv(vport->lpfc_vmid_host_uuid, 0, LPFC_COMPRESS_VMID_SIZE))
 		memcpy(vport->lpfc_vmid_host_uuid, vmid->host_vmid,
 		       LPFC_COMPRESS_VMID_SIZE);
 
-- 
2.40.0.1.gaa8946217a0b