On Thu, 30 Aug 2012, Sebastian Andrzej Siewior wrote: > >So the problem appears to be that dummy-hcd doesn't implement the right > >interval for periodic transfers. I'd accept a patch to fix that. > > That is also missing. However, we are pulled down, that means > find_endpoint() in dummy returns always NULL due to !active(). So we > never get here to delay the interrupt packet. You're missing the point. The test of the interrupt URB's interval should be done _before_ find_endpoint() is called. That's how real host controllers work; they don't try to contact interrupt endpoints during frames that aren't in the endpoint's schedule. (The same goes for isochronous endpoints... but dummy-hcd currently doesn't support isochronous at all.) 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
