On Sat, 14 Aug 2010, okias wrote: > I try irqpool option, but bisect is not acceptable (it's really wide > range of kernel, so I don't expect it can work). One of the nice things about bisection is that a wide range of kernels requires only a few more tests than a narrow range. For example, bisecting 8000 different commits requires about 13 tests, whereas bisecting 65000 different commits requires only about 16 tests. You may find that you need to enable the ehci->broken_periodic flag for your controller in ehci-pci.c. Alan Stern -- 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