diff --git a/hypervisor/dm/vpci/vpci.c b/hypervisor/dm/vpci/vpci.c
index cc29339d9..489191d3b 100644
--- a/hypervisor/dm/vpci/vpci.c
+++ b/hypervisor/dm/vpci/vpci.c
@@ -131,8 +131,7 @@ void vpci_init(struct acrn_vm *vm)
 #endif
 
 	if ((vpci->ops->init != NULL) && (vpci->ops->init(vm) == 0)) {
-		register_io_emulation_handler(vm, PCI_PIO_IDX, &pci_cfg_range,
-			&pci_cfg_io_read, &pci_cfg_io_write);
+		register_io_emulation_handler(vm, PCI_PIO_IDX, &pci_cfg_range, pci_cfg_io_read, pci_cfg_io_write);
 		/* This is a tmp solution to avoid sos reboot failure, it need pass-thru IO port CF9 for Reset Control
 		 * register.
 		 */
diff --git a/hypervisor/dm/vpic.c b/hypervisor/dm/vpic.c
index 6aa94bd2c..709a1af6f 100644
--- a/hypervisor/dm/vpic.c
+++ b/hypervisor/dm/vpic.c
@@ -867,11 +867,11 @@ static void vpic_register_io_handler(struct acrn_vm *vm)
 	};
 
 	register_io_emulation_handler(vm, PIC_MASTER_PIO_IDX, &master_range,
-			&vpic_master_io_read, &vpic_master_io_write);
+			vpic_master_io_read, vpic_master_io_write);
 	register_io_emulation_handler(vm, PIC_SLAVE_PIO_IDX, &slave_range,
-			&vpic_slave_io_read, &vpic_slave_io_write);
+			vpic_slave_io_read, vpic_slave_io_write);
 	register_io_emulation_handler(vm, PIC_ELC_PIO_IDX, &elcr_range,
-			&vpic_elc_io_read, &vpic_elc_io_write);
+			vpic_elc_io_read, vpic_elc_io_write);
 }
 
 void vpic_init(struct acrn_vm *vm)