Index: uspace/lib/usbhost/include/usb/host/dma_buffer.h
===================================================================
--- uspace/lib/usbhost/include/usb/host/dma_buffer.h	(revision 5a6cc679876514e29ac7899053554db66db754d9)
+++ 	(revision )
@@ -1,72 +1,0 @@
-/*
- * Copyright (c) 2017 Ondrej Hlavaty <aearsis@eideo.cz>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- * - Redistributions in binary form must reproduce the above copyright
- *   notice, this list of conditions and the following disclaimer in the
- *   documentation and/or other materials provided with the distribution.
- * - The name of the author may not be used to endorse or promote products
- *   derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/** @addtogroup drvusbehci
- * @{
- */
-/** @file
- * @brief USB host controller library: DMA buffer helpers
- *
- * Simplifies usage of bounce buffers.
- *
- * Currently the minimum size allocated is a page, which is wasteful. Could be
- * extended to support memory pools, which will enable smaller units of
- * allocation.
- */
-#ifndef LIB_USBHOST_DMA_BUFFER
-#define LIB_USBHOST_DMA_BUFFER
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <errno.h>
-
-typedef const struct dma_policy {
-	bool use64;		/**< Whether to use more than initial 4GiB of memory */
-	size_t alignment;	/**< What alignment is needed. At most PAGE_SIZE. */
-} dma_policy_t;
-
-typedef struct dma_buffer {
-	void *virt;
-	uintptr_t phys;
-} dma_buffer_t;
-
-extern dma_policy_t dma_policy_default;
-
-extern int dma_buffer_alloc(dma_buffer_t *db, size_t size);
-extern int dma_buffer_alloc_policy(dma_buffer_t *, size_t, dma_policy_t);
-extern void dma_buffer_free(dma_buffer_t *);
-extern uintptr_t dma_buffer_phys(const dma_buffer_t *, void *);
-
-static inline int dma_buffer_is_set(dma_buffer_t *db)
-{
-	return !!db->virt;
-}
-
-#endif
-/**
- * @}
- */