Index: uspace/drv/bus/usb/uhci/hc.c
===================================================================
--- uspace/drv/bus/usb/uhci/hc.c	(revision 8cffdf5617a1f3e25f0ecdc728addb5bdd6718c2)
+++ uspace/drv/bus/usb/uhci/hc.c	(revision d52ab7be66f720e789575e048109add865242a82)
@@ -123,6 +123,6 @@
 	memcpy(cmds, uhci_irq_commands, sizeof(uhci_irq_commands));
 	uhci_regs_t *registers = (uhci_regs_t *) RNGABSPTR(*regs);
-	cmds[0].addr = &registers->usbsts;
-	cmds[3].addr = &registers->usbsts;
+	cmds[0].addr = (void *) &registers->usbsts;
+	cmds[3].addr = (void *) &registers->usbsts;
 
 	return EOK;
Index: uspace/drv/bus/usb/uhci/hc.h
===================================================================
--- uspace/drv/bus/usb/uhci/hc.h	(revision 8cffdf5617a1f3e25f0ecdc728addb5bdd6718c2)
+++ uspace/drv/bus/usb/uhci/hc.h	(revision d52ab7be66f720e789575e048109add865242a82)
@@ -46,5 +46,5 @@
 typedef struct uhci_regs {
 	/** Command register, controls HC behaviour */
-	uint16_t usbcmd;
+	ioport16_t usbcmd;
 #define UHCI_CMD_MAX_PACKET (1 << 7)
 #define UHCI_CMD_CONFIGURE  (1 << 6)
@@ -57,5 +57,5 @@
 
 	/** Status register, 1 means interrupt is asserted (if enabled) */
-	uint16_t usbsts;
+	ioport16_t usbsts;
 #define UHCI_STATUS_HALTED (1 << 5)
 #define UHCI_STATUS_PROCESS_ERROR (1 << 4)
@@ -68,5 +68,5 @@
 
 	/** Interrupt enabled registers */
-	uint16_t usbintr;
+	ioport16_t usbintr;
 #define UHCI_INTR_SHORT_PACKET (1 << 3)
 #define UHCI_INTR_COMPLETE (1 << 2)
@@ -75,11 +75,11 @@
 
 	/** Register stores frame number used in SOF packet */
-	uint16_t frnum;
+	ioport16_t frnum;
 
 	/** Pointer(physical) to the Frame List */
-	uint32_t flbaseadd;
+	ioport32_t flbaseadd;
 
 	/** SOF modification to match external timers */
-	uint8_t sofmod;
+	ioport8_t sofmod;
 } uhci_regs_t;