Index: uspace/lib/usb/src/hc.c
===================================================================
--- uspace/lib/usb/src/hc.c	(revision 79ae36ddc409577eb0da3750b3a7280e034566a2)
+++ uspace/lib/usb/src/hc.c	(revision 54d4b9e8fe58277730b33d96d5352f73f9609a83)
@@ -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)