Index: uspace/lib/drv/include/ops/hw_res.h
===================================================================
--- uspace/lib/drv/include/ops/hw_res.h	(revision 2e01b3f1105b1f5750b3f7d726b038336feb514e)
+++ uspace/lib/drv/include/ops/hw_res.h	(revision 6fd365db255d6c7fdfedc757e774c4e07fe05940)
@@ -45,4 +45,5 @@
 	bool (*enable_interrupt)(ddf_fun_t *);
 	int (*dma_channel_setup)(ddf_fun_t *, unsigned, uint32_t, uint16_t, uint8_t);
+	int (*dma_channel_remain)(ddf_fun_t *, unsigned, uint16_t *);
 } hw_res_ops_t;