Index: uspace/drv/bus/usb/ehci/res.c
===================================================================
--- uspace/drv/bus/usb/ehci/res.c	(revision dbf32b10e7146a1f953c4eda94c63b8ac246f0ba)
+++ uspace/drv/bus/usb/ehci/res.c	(revision 95c675b4aa3fea7b424b73892a90b052c673cfd3)
@@ -39,5 +39,5 @@
 #include <str_error.h>
 #include <assert.h>
-#include <devman.h>
+#include <ddf/driver.h>
 #include <ddi.h>
 #include <usb/debug.h>
@@ -176,7 +176,6 @@
 	assert(device);
 
-	async_sess_t *parent_sess = devman_parent_device_connect(
-	    ddf_dev_get_handle(device), IPC_FLAG_BLOCKING);
-	if (!parent_sess)
+	async_sess_t *parent_sess = ddf_dev_parent_sess_get(device);
+	if (parent_sess == NULL)
 		return ENOMEM;
 
Index: uspace/drv/bus/usb/ohci/hw_struct/transfer_descriptor.c
===================================================================
--- uspace/drv/bus/usb/ohci/hw_struct/transfer_descriptor.c	(revision dbf32b10e7146a1f953c4eda94c63b8ac246f0ba)
+++ uspace/drv/bus/usb/ohci/hw_struct/transfer_descriptor.c	(revision 95c675b4aa3fea7b424b73892a90b052c673cfd3)
@@ -78,5 +78,5 @@
 
 	/* Allow less data on input. */
-	if (dir == USB_DIRECTION_IN) {
+	if (direction == USB_DIRECTION_IN) {
 		OHCI_MEM32_SET(instance->status, TD_STATUS_ROUND_FLAG);
 	}
Index: uspace/drv/bus/usb/ohci/ohci_rh.c
===================================================================
--- uspace/drv/bus/usb/ohci/ohci_rh.c	(revision dbf32b10e7146a1f953c4eda94c63b8ac246f0ba)
+++ uspace/drv/bus/usb/ohci/ohci_rh.c	(revision 95c675b4aa3fea7b424b73892a90b052c673cfd3)
@@ -361,5 +361,5 @@
 	case USB_HUB_FEATURE_C_PORT_RESET:        /*20*/
 		usb_log_debug2("Clearing port C_CONNECTION, C_ENABLE, "
-		    "C_SUSPEND, C_OC or C_RESET on port %"PRIu16".\n", port);
+		    "C_SUSPEND, C_OC or C_RESET on port %u.\n", port);
 		/* Bit offsets correspond to the feature number */
 		OHCI_WR(hub->registers->rh_port_status[port],
@@ -410,5 +410,5 @@
 	case USB_HUB_FEATURE_PORT_RESET:   /*4*/
 		usb_log_debug2("Setting port POWER, ENABLE, SUSPEND or RESET "
-		    "on port %"PRIu16".\n", port);
+		    "on port %u.\n", port);
 		/* Bit offsets correspond to the feature number */
 		OHCI_WR(hub->registers->rh_port_status[port], 1 << feature);
Index: uspace/drv/bus/usb/uhci/main.c
===================================================================
--- uspace/drv/bus/usb/uhci/main.c	(revision dbf32b10e7146a1f953c4eda94c63b8ac246f0ba)
+++ uspace/drv/bus/usb/uhci/main.c	(revision 95c675b4aa3fea7b424b73892a90b052c673cfd3)
@@ -36,5 +36,4 @@
 #include <assert.h>
 #include <ddf/driver.h>
-#include <devman.h>
 #include <errno.h>
 #include <io/log.h>
@@ -123,15 +122,11 @@
 	assert(device);
 
-	async_sess_t *parent_sess = devman_parent_device_connect(
-	    ddf_dev_get_handle(device), IPC_FLAG_BLOCKING);
-	if (!parent_sess)
+	async_sess_t *parent_sess = ddf_dev_parent_sess_get(device);
+	if (parent_sess == NULL)
 		return ENOMEM;
 
 	/* See UHCI design guide page 45 for these values.
 	 * Write all WC bits in USB legacy register */
-	const int rc = pci_config_space_write_16(parent_sess, 0xc0, 0xaf00);
-
-	async_hangup(parent_sess);
-	return rc;
+	return pci_config_space_write_16(parent_sess, 0xc0, 0xaf00);
 }
 
Index: uspace/drv/bus/usb/usbhub/status.h
===================================================================
--- uspace/drv/bus/usb/usbhub/status.h	(revision dbf32b10e7146a1f953c4eda94c63b8ac246f0ba)
+++ uspace/drv/bus/usb/usbhub/status.h	(revision 95c675b4aa3fea7b424b73892a90b052c673cfd3)
@@ -35,6 +35,4 @@
 #define	HUB_STATUS_H
 
-#include <stdbool.h>
-#include <stdint.h>
 #include <usb/dev/request.h>
 
Index: uspace/drv/bus/usb/usbhub/usbhub.h
===================================================================
--- uspace/drv/bus/usb/usbhub/usbhub.h	(revision dbf32b10e7146a1f953c4eda94c63b8ac246f0ba)
+++ uspace/drv/bus/usb/usbhub/usbhub.h	(revision 95c675b4aa3fea7b424b73892a90b052c673cfd3)
@@ -38,5 +38,4 @@
 #define DRV_USBHUB_USBHUB_H
 
-#include <ipc/devman.h>
 #include <ddf/driver.h>
 
@@ -72,5 +71,5 @@
 	/** Condition variable for pending_ops_count. */
 	fibril_condvar_t pending_ops_cv;
-	/** Pointer to devman usbhub function. */
+	/** Pointer to usbhub function. */
 	ddf_fun_t *hub_fun;
 	/** Status indicator */
Index: uspace/drv/bus/usb/usbmid/explore.c
===================================================================
--- uspace/drv/bus/usb/usbmid/explore.c	(revision dbf32b10e7146a1f953c4eda94c63b8ac246f0ba)
+++ uspace/drv/bus/usb/usbmid/explore.c	(revision 95c675b4aa3fea7b424b73892a90b052c673cfd3)
@@ -132,5 +132,5 @@
  *
  * @param dev Device to be explored.
- * @return Whether to accept this device from devman.
+ * @return Whether to accept this device.
  */
 int usbmid_explore_device(usb_device_t *dev)