hi: 2011/10/5 Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>: > On Wed, 5 Oct 2011, loody wrote: > >> hi: >> >> 2009/6/13 Julie Zhu <julie.zhu@xxxxxxxxxx>: >> > Thank you for your time to guide me through. >> > >> > Julie. >> > >> >> -----Original Message----- >> >> From: Alan Stern [mailto:stern@xxxxxxxxxxxxxxxxxxx] >> >> Sent: Friday, June 12, 2009 12:25 PM >> >> To: Julie Zhu >> >> Cc: USB list >> >> Subject: RE: periodic schedule enabled during usb_disconnect >> >> >> >> On Fri, 12 Jun 2009, Julie Zhu wrote: >> >> >> >> > Hi, Alan, >> >> > >> >> > I am sorry, I do not see why qh_completions() has anything to do >> > with >> >> > usb_disconnect(). >> >> >> >> It's a subtle connection. >> >> >> >> usb_disconnect() calls usb_disable_device(), which calls >> >> usb_disable_endpoint() for every possible endpoint in the device. >> >> >> >> That routine calls usb_hcd_flush_endpoint(), which calls unlink1(), >> >> which calls hcd->driver->urb_dequeue() -- which in this case is >> >> ehci_urb_dequeue(). >> >> >> >> For interrupt endpoints, that routine calls intr_deschedule() followed >> >> by qh_completions(). Voila! >> sorry for interrupting your discussion. > > What on earth makes you think you can interrupt a conversation that > ended more than two years ago? > > You know, when you post a message to the linux-usb mailing list, it > doesn't have to be a reply (and it _especially_ doesn't have to be a > reply to something that was posted years ago). You can simply send > your own message, all by itself, with a brand-new Subject: line. > Nobody will object. sorry :P Next time I will embed the hyper link of previous discussion in a new subject mail. -- Regards, -- 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
