XHCI_TRBC_USB_TRANSACTION_ERROR 772 uspace/drv/bus/usb/xhci/commands.c case XHCI_TRBC_USB_TRANSACTION_ERROR: XHCI_TRBC_USB_TRANSACTION_ERROR 372 uspace/drv/bus/usb/xhci/transfers.c case XHCI_TRBC_USB_TRANSACTION_ERROR:HelenOS homepage, sources at GitHub