Index: uspace/lib/usb/include/usb/host/batch.h
===================================================================
--- uspace/lib/usb/include/usb/host/batch.h	(revision 6a32665dcadd5b1be567dad953c6c8ad45104b65)
+++ uspace/lib/usb/include/usb/host/batch.h	(revision cd1cec3bc8deaa31b192d8430abb26ebf75ce6f3)
@@ -92,5 +92,13 @@
 void usb_transfer_batch_call_in(usb_transfer_batch_t *instance);
 void usb_transfer_batch_call_out(usb_transfer_batch_t *instance);
-void usb_transfer_batch_finish(usb_transfer_batch_t *instance, int error);
+void usb_transfer_batch_finish(usb_transfer_batch_t *instance);
+
+static inline void usb_transfer_batch_finish_error(
+    usb_transfer_batch_t *instance, int error)
+{
+	assert(instance);
+	instance->error = error;
+	usb_transfer_batch_finish(instance);
+}
 
 #endif
Index: uspace/lib/usb/src/host/batch.c
===================================================================
--- uspace/lib/usb/src/host/batch.c	(revision 6a32665dcadd5b1be567dad953c6c8ad45104b65)
+++ uspace/lib/usb/src/host/batch.c	(revision cd1cec3bc8deaa31b192d8430abb26ebf75ce6f3)
@@ -86,8 +86,7 @@
  *
  */
-void usb_transfer_batch_finish(usb_transfer_batch_t *instance, int error)
+void usb_transfer_batch_finish(usb_transfer_batch_t *instance)
 {
 	assert(instance);
-	instance->error = error;
 	instance->next_step(instance);
 }