On Wed, 24 Dec 2008, Zhang Rui wrote: > Then I have a question, what if the uchi_hcd is not loaded? > the ehci host controller doesn't work in this case? It does work. But it handles only high-speed devices; low-speed and full-speed devices will be ignored (unless they are connected through a high-speed hub). Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html