Index: kernel/generic/src/ddi/ddi.c
===================================================================
--- kernel/generic/src/ddi/ddi.c	(revision 46e886fb215db4c5bd1015c2bfd2c6d661dd93bd)
+++ kernel/generic/src/ddi/ddi.c	(revision 3e828ea40985ce126affd5d7faa6ba679802b4db)
@@ -248,5 +248,5 @@
  */
 sys_errno_t sys_physmem_map(uintptr_t phys, size_t pages, unsigned int flags,
-    void *virt_ptr, uintptr_t bound)
+    uspace_ptr_uintptr_t virt_ptr, uintptr_t bound)
 {
 	uintptr_t virt;
@@ -262,5 +262,5 @@
 	rc = copy_to_uspace(virt_ptr, &virt, sizeof(virt));
 	if (rc != EOK) {
-		physmem_unmap((uintptr_t) virt);
+		physmem_unmap(virt);
 		return rc;
 	}
@@ -393,5 +393,5 @@
  *
  */
-sys_errno_t sys_iospace_enable(ddi_ioarg_t *uspace_io_arg)
+sys_errno_t sys_iospace_enable(uspace_ptr_ddi_ioarg_t uspace_io_arg)
 {
 	ddi_ioarg_t arg;
@@ -404,5 +404,5 @@
 }
 
-sys_errno_t sys_iospace_disable(ddi_ioarg_t *uspace_io_arg)
+sys_errno_t sys_iospace_disable(uspace_ptr_ddi_ioarg_t uspace_io_arg)
 {
 	ddi_ioarg_t arg;
@@ -465,5 +465,5 @@
 
 sys_errno_t sys_dmamem_map(size_t size, unsigned int map_flags, unsigned int flags,
-    void *phys_ptr, void *virt_ptr, uintptr_t bound)
+    uspace_ptr_uintptr_t phys_ptr, uspace_ptr_uintptr_t virt_ptr, uintptr_t bound)
 {
 	if ((flags & DMAMEM_FLAGS_ANONYMOUS) == 0) {
@@ -473,5 +473,5 @@
 
 		uintptr_t phys;
-		errno_t rc = dmamem_map((uintptr_t) virt_ptr, size, map_flags,
+		errno_t rc = dmamem_map(virt_ptr, size, map_flags,
 		    flags, &phys);
 
@@ -481,5 +481,5 @@
 		rc = copy_to_uspace(phys_ptr, &phys, sizeof(phys));
 		if (rc != EOK) {
-			dmamem_unmap((uintptr_t) virt_ptr, size);
+			dmamem_unmap(virt_ptr, size);
 			return rc;
 		}
@@ -508,5 +508,5 @@
 		rc = copy_to_uspace(phys_ptr, &phys, sizeof(phys));
 		if (rc != EOK) {
-			dmamem_unmap_anonymous((uintptr_t) virt);
+			dmamem_unmap_anonymous(virt);
 			return rc;
 		}
@@ -514,5 +514,5 @@
 		rc = copy_to_uspace(virt_ptr, &virt, sizeof(virt));
 		if (rc != EOK) {
-			dmamem_unmap_anonymous((uintptr_t) virt);
+			dmamem_unmap_anonymous(virt);
 			return rc;
 		}