diff --git a/drivers/vdpa/octeon_ep/octep_vdpa_main.c b/drivers/vdpa/octeon_ep/octep_vdpa_main.c
index 9946480ee704..deaa8dc7813e 100644
--- a/drivers/vdpa/octeon_ep/octep_vdpa_main.c
+++ b/drivers/vdpa/octeon_ep/octep_vdpa_main.c
@@ -573,10 +573,10 @@ static const struct vdpa_mgmtdev_ops octep_vdpa_mgmt_dev_ops = {
 
 static bool get_device_ready_status(u8 __iomem *addr)
 {
-	u64 signature = readq(addr + OCTEP_VF_MBOX_DATA(0));
+	u32 signature = readl(addr + OCTEP_VF_MBOX_DATA(0));
 
 	if (signature == OCTEP_DEV_READY_SIGNATURE) {
-		writeq(0, addr + OCTEP_VF_MBOX_DATA(0));
+		writel(0, addr + OCTEP_VF_MBOX_DATA(0));
 		return true;
 	}
 
@@ -748,7 +748,7 @@ static int octep_sriov_enable(struct pci_dev *pdev, int num_vfs)
 	rpvf = FIELD_GET(GENMASK_ULL(35, 32), val);
 	if (done) {
 		for (i = 0; i < pf->enabled_vfs; i++)
-			writeq(OCTEP_DEV_READY_SIGNATURE, addr + OCTEP_PF_MBOX_DATA(i * rpvf));
+			writel(OCTEP_DEV_READY_SIGNATURE, addr + OCTEP_PF_MBOX_DATA(i * rpvf));
 	}
 
 	return num_vfs;