On Fri, 9 Oct 2009, vichy wrote: > > Thanks for your kind help :) > > I did see what you mention in source code. > > But the mechanism seems different in older version driver, which > > ehci-irq doesn't set any flag but later time I can see someone wake up > > hub driver to continue. > sorry for not mentioning the version I saw, it is 2.6.20. Yes, 2.6.20 worked differently from current kernels. It relied on polling rather than interrupts. Look at the end of usb_hcd_poll_rh_status() in hcd.c, and bear in mind that for ehci-hcd, hcd->uses_new_polling was false. 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
