Index: uspace/drv/bus/usb/xhci/hw_struct/trb.h
===================================================================
--- uspace/drv/bus/usb/xhci/hw_struct/trb.h	(revision 708d8fcd39276a71e62f9b40a631eab1814b52d7)
+++ uspace/drv/bus/usb/xhci/hw_struct/trb.h	(revision 4a00bc9f49d58b390c4941c5ba92c9d636d4d229)
@@ -96,5 +96,5 @@
 	xhci_dword_t status;
 	xhci_dword_t control;
-} __attribute__((packed)) xhci_trb_t;
+} __attribute__((packed)) __attribute__((aligned(16))) xhci_trb_t;
 
 #define TRB_TYPE(trb)           XHCI_DWORD_EXTRACT((trb).control, 15, 10)