Index: uspace/drv/ehci-hcd/hc_iface.c
===================================================================
--- uspace/drv/ehci-hcd/hc_iface.c	(revision 11349a852e86ea2e72b2ef3e7b100153778c78c4)
+++ uspace/drv/ehci-hcd/hc_iface.c	(revision 511cfc89a660d088fe845070ec48c2c2ab50e551)
@@ -106,4 +106,19 @@
 }
 
+/** Find device handle by USB address.
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] address Address in question.
+ * @param[out] handle Where to store device handle if found.
+ * @return Error code.
+ */
+static int find_by_address(ddf_fun_t *fun, usb_address_t address,
+    devman_handle_t *handle)
+{
+	UNSUPPORTED("find_by_address");
+
+	return ENOTSUP;
+}
+
 /** Release previously requested address.
  *
@@ -321,4 +336,5 @@
 	.request_address = request_address,
 	.bind_address = bind_address,
+	.find_by_address = find_by_address,
 	.release_address = release_address,
 
Index: uspace/drv/ohci/iface.c
===================================================================
--- uspace/drv/ohci/iface.c	(revision 11349a852e86ea2e72b2ef3e7b100153778c78c4)
+++ uspace/drv/ohci/iface.c	(revision 511cfc89a660d088fe845070ec48c2c2ab50e551)
@@ -122,4 +122,24 @@
 	return EOK;
 }
+
+
+/** Find device handle by address interface function.
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] address Address in question.
+ * @param[out] handle Where to store device handle if found.
+ * @return Error code.
+ */
+static int find_by_address(ddf_fun_t *fun, usb_address_t address,
+    devman_handle_t *handle)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	bool found =
+	    usb_device_keeper_find_by_address(&hc->manager, address, handle);
+	return found ? EOK : ENOENT;
+}
+
 /*----------------------------------------------------------------------------*/
 /** Release address interface function
@@ -402,4 +422,5 @@
 	.request_address = request_address,
 	.bind_address = bind_address,
+	.find_by_address = find_by_address,
 	.release_address = release_address,
 
Index: uspace/drv/ohci/root_hub.c
===================================================================
--- uspace/drv/ohci/root_hub.c	(revision 11349a852e86ea2e72b2ef3e7b100153778c78c4)
+++ uspace/drv/ohci/root_hub.c	(revision 511cfc89a660d088fe845070ec48c2c2ab50e551)
@@ -237,5 +237,5 @@
 		return ENOMEM;
 
-	usb_log_info("OHCI root hub with %d ports initialized.\n",
+	usb_log_info("OHCI root hub with %zu ports initialized.\n",
 	    instance->port_count);
 
Index: uspace/drv/uhci-hcd/iface.c
===================================================================
--- uspace/drv/uhci-hcd/iface.c	(revision 11349a852e86ea2e72b2ef3e7b100153778c78c4)
+++ uspace/drv/uhci-hcd/iface.c	(revision 511cfc89a660d088fe845070ec48c2c2ab50e551)
@@ -122,4 +122,23 @@
 	return EOK;
 }
+
+/** Find device handle by address interface function.
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] address Address in question.
+ * @param[out] handle Where to store device handle if found.
+ * @return Error code.
+ */
+static int find_by_address(ddf_fun_t *fun, usb_address_t address,
+    devman_handle_t *handle)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	bool found =
+	    usb_device_keeper_find_by_address(&hc->manager, address, handle);
+	return found ? EOK : ENOENT;
+}
+
 /*----------------------------------------------------------------------------*/
 /** Release address interface function
@@ -352,4 +371,5 @@
 	.request_address = request_address,
 	.bind_address = bind_address,
+	.find_by_address = find_by_address,
 	.release_address = release_address,
 
Index: uspace/drv/vhc/connhost.c
===================================================================
--- uspace/drv/vhc/connhost.c	(revision 11349a852e86ea2e72b2ef3e7b100153778c78c4)
+++ uspace/drv/vhc/connhost.c	(revision 511cfc89a660d088fe845070ec48c2c2ab50e551)
@@ -94,4 +94,20 @@
 }
 
+/** Find device handle by address interface function.
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] address Address in question.
+ * @param[out] handle Where to store device handle if found.
+ * @return Error code.
+ */
+static int find_by_address(ddf_fun_t *fun, usb_address_t address,
+    devman_handle_t *handle)
+{
+	VHC_DATA(vhc, fun);
+	bool found =
+	    usb_device_keeper_find_by_address(&vhc->dev_keeper, address, handle);
+	return found ? EOK : ENOENT;
+}
+
 /** Release previously requested address.
  *
@@ -444,4 +460,5 @@
 	.request_address = request_address,
 	.bind_address = bind_address,
+	.find_by_address = find_by_address,
 	.release_address = release_address,