Index: uspace/lib/usbhost/include/usb/host/usb_transfer_batch.h
===================================================================
--- uspace/lib/usbhost/include/usb/host/usb_transfer_batch.h	(revision 2b0929ee5e8d739ac79c3b2185063a8370dc73ab)
+++ uspace/lib/usbhost/include/usb/host/usb_transfer_batch.h	(revision b591cab6d3c22c0c11976c0f5265e5117f008dd3)
@@ -80,9 +80,4 @@
 	 */
 	int error;
-
-	/** Driver specific data */
-	void *private_data;
-	/** Callback to properly remove driver data during destruction */
-	void (*private_data_dtor)(void *p_data);
 } usb_transfer_batch_t;
 
@@ -109,7 +104,5 @@
     usbhc_iface_transfer_out_callback_t func_out,
     void *arg,
-    ddf_fun_t *fun,
-    void *private_data,
-    void (*private_data_dtor)(void *p_data)
+    ddf_fun_t *fun
 );
 void usb_transfer_batch_destroy(const usb_transfer_batch_t *instance);