Index: uspace/lib/c/include/device/hw_res.h
===================================================================
--- uspace/lib/c/include/device/hw_res.h	(revision d51838f190d8e49cb00493b84858f7ad93996014)
+++ uspace/lib/c/include/device/hw_res.h	(revision 6deb2cdd4f9ffa23e068faa9b3d977ec3399c1ed)
@@ -123,5 +123,5 @@
 extern int hw_res_dma_channel_setup(async_sess_t *, unsigned int, uint32_t,
     uint32_t, uint8_t);
-extern int hw_res_dma_channel_remain(async_sess_t *, unsigned);
+extern int hw_res_dma_channel_remain(async_sess_t *, unsigned, size_t *);
 
 #endif