On Fri, Sep 21, 2012 at 12:49 AM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > The results will be more impressive if you plug three of the hubs > directly into the fourth and attach the fourth hub to the computer. See all the logs in the below link for the test case above. http://kernel.ubuntu.com/~ming/kernel/usb/hub/ Hope the test can eliminate your concern on the problem. IMO, the only effect is that 'lsusb' becomes a bit slow, :-) Thanks, -- Ming Lei -- 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