Index: uspace/lib/usbvirt/src/ipc_hc.c
===================================================================
--- uspace/lib/usbvirt/src/ipc_hc.c	(revision 25a179efc4ecca45aa90793992b6c1c2743fd07f)
+++ uspace/lib/usbvirt/src/ipc_hc.c	(revision a53ed3a8097360ccf174e8d94fb407db919eb66a)
@@ -55,5 +55,5 @@
  *
  */
-int usbvirt_ipc_send_control_read(async_sess_t *sess, void *setup_buffer,
+errno_t usbvirt_ipc_send_control_read(async_sess_t *sess, void *setup_buffer,
     size_t setup_buffer_size, void *data_buffer, size_t data_buffer_size,
     size_t *data_transfered_size)
@@ -77,5 +77,5 @@
 	}
 	
-	int rc = async_data_write_start(exch, setup_buffer, setup_buffer_size);
+	errno_t rc = async_data_write_start(exch, setup_buffer, setup_buffer_size);
 	if (rc != EOK) {
 		async_exchange_end(exch);
@@ -95,6 +95,6 @@
 	}
 	
-	int data_request_rc;
-	int opening_request_rc;
+	errno_t data_request_rc;
+	errno_t opening_request_rc;
 	async_wait_for(data_request, &data_request_rc);
 	async_wait_for(opening_request, &opening_request_rc);
@@ -103,11 +103,11 @@
 		/* Prefer the return code of the opening request. */
 		if (opening_request_rc != EOK)
-			return (int) opening_request_rc;
+			return (errno_t) opening_request_rc;
 		else
-			return (int) data_request_rc;
+			return (errno_t) data_request_rc;
 	}
 	
 	if (opening_request_rc != EOK)
-		return (int) opening_request_rc;
+		return (errno_t) opening_request_rc;
 	
 	if (data_transfered_size != NULL)
@@ -129,5 +129,5 @@
  *
  */
-int usbvirt_ipc_send_control_write(async_sess_t *sess, void *setup_buffer,
+errno_t usbvirt_ipc_send_control_write(async_sess_t *sess, void *setup_buffer,
     size_t setup_buffer_size, void *data_buffer, size_t data_buffer_size)
 {
@@ -150,5 +150,5 @@
 	}
 	
-	int rc = async_data_write_start(exch, setup_buffer, setup_buffer_size);
+	errno_t rc = async_data_write_start(exch, setup_buffer, setup_buffer_size);
 	if (rc != EOK) {
 		async_exchange_end(exch);
@@ -168,8 +168,8 @@
 	async_exchange_end(exch);
 	
-	int opening_request_rc;
+	errno_t opening_request_rc;
 	async_wait_for(opening_request, &opening_request_rc);
 	
-	return (int) opening_request_rc;
+	return (errno_t) opening_request_rc;
 }
 
@@ -186,5 +186,5 @@
  *
  */
-int usbvirt_ipc_send_data_in(async_sess_t *sess, usb_endpoint_t ep,
+errno_t usbvirt_ipc_send_data_in(async_sess_t *sess, usb_endpoint_t ep,
     usb_transfer_type_t tr_type, void *data, size_t data_size, size_t *act_size)
 {
@@ -230,6 +230,6 @@
 	}
 	
-	int data_request_rc;
-	int opening_request_rc;
+	errno_t data_request_rc;
+	errno_t opening_request_rc;
 	async_wait_for(data_request, &data_request_rc);
 	async_wait_for(opening_request, &opening_request_rc);
@@ -238,11 +238,11 @@
 		/* Prefer the return code of the opening request. */
 		if (opening_request_rc != EOK)
-			return (int) opening_request_rc;
+			return (errno_t) opening_request_rc;
 		else
-			return (int) data_request_rc;
+			return (errno_t) data_request_rc;
 	}
 	
 	if (opening_request_rc != EOK)
-		return (int) opening_request_rc;
+		return (errno_t) opening_request_rc;
 	
 	if (act_size != NULL)
@@ -263,5 +263,5 @@
  *
  */
-int usbvirt_ipc_send_data_out(async_sess_t *sess, usb_endpoint_t ep,
+errno_t usbvirt_ipc_send_data_out(async_sess_t *sess, usb_endpoint_t ep,
     usb_transfer_type_t tr_type, void *data, size_t data_size)
 {
@@ -296,5 +296,5 @@
 	}
 	
-	int rc = async_data_write_start(exch, data, data_size);
+	errno_t rc = async_data_write_start(exch, data, data_size);
 	
 	async_exchange_end(exch);
@@ -305,8 +305,8 @@
 	}
 	
-	int opening_request_rc;
+	errno_t opening_request_rc;
 	async_wait_for(opening_request, &opening_request_rc);
 	
-	return (int) opening_request_rc;
+	return (errno_t) opening_request_rc;
 }