Index: uspace/lib/usb/src/hc.c
===================================================================
--- uspace/lib/usb/src/hc.c	(revision 662da502d6b512eb18ec62af4266220ef8e12574)
+++ uspace/lib/usb/src/hc.c	(revision 9f7276d086028d3d36b9d3638e5d4759150cd6c9)
@@ -98,5 +98,5 @@
 		return EBUSY;
 	
-	async_sess_t *sess = devman_device_connect(EXCHANGE_SERIALIZE,
+	async_sess_t *sess = devman_device_connect(EXCHANGE_ATOMIC,
 	    connection->hc_handle, 0);
 	if (!sess)
@@ -177,5 +177,5 @@
 {
 	async_sess_t *parent_sess =
-	    devman_parent_device_connect(EXCHANGE_SERIALIZE, dev_handle,
+	    devman_parent_device_connect(EXCHANGE_ATOMIC, dev_handle,
 	    IPC_FLAG_BLOCKING);
 	if (!parent_sess)
@@ -241,5 +241,5 @@
 {
 	async_sess_t *parent_sess =
-	    devman_parent_device_connect(EXCHANGE_SERIALIZE, device_handle,
+	    devman_parent_device_connect(EXCHANGE_ATOMIC, device_handle,
 	    IPC_FLAG_BLOCKING);
 	if (!parent_sess)
Index: uspace/lib/usbdev/src/pipes.c
===================================================================
--- uspace/lib/usbdev/src/pipes.c	(revision 662da502d6b512eb18ec62af4266220ef8e12574)
+++ uspace/lib/usbdev/src/pipes.c	(revision 9f7276d086028d3d36b9d3638e5d4759150cd6c9)
@@ -81,5 +81,5 @@
 {
 	async_sess_t *parent_sess =
-	    devman_parent_device_connect(EXCHANGE_SERIALIZE, device->handle,
+	    devman_parent_device_connect(EXCHANGE_ATOMIC, device->handle,
 	    IPC_FLAG_BLOCKING);
 	if (!parent_sess)
@@ -122,5 +122,5 @@
 	
 	async_sess_t *parent_sess =
-	    devman_parent_device_connect(EXCHANGE_SERIALIZE, dev->handle,
+	    devman_parent_device_connect(EXCHANGE_ATOMIC, dev->handle,
 	    IPC_FLAG_BLOCKING);
 	if (!parent_sess)