Tested with 4.0-rc4. Problem persists exactly as earlier versions. This is a potentially serious issue. Plugging common external USB 3.0 hubs into the host USB 3.0 hub on a very popular HP laptop, using a very popular AMD chipset, locks up a CPU. So far, over 3 weeks, no acknowledgement. I'd be happy to gather whatever data is necessary for someone to begin looking at it. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
