On Mon, 2014-11-17 at 17:47 +0800, Wang, Yu wrote: > On Mon, Nov 17, 2014 at 10:46:25AM +0100, Oliver Neukum wrote: > >On Mon, 2014-11-17 at 13:51 +0800, Wang, Yu wrote: > >> Hi Roger, > >> > >> I saw one old thread about your patch for wakeup IRQ support in USB > >> core. We need it for Intel platform. And it is work well on intel > >> platform. > >> > >> May I know why this patch haven't get merged so far? I saw everything > >> was smooth during the discussion, and you had already fixed all comments > >> from Alan. But somehow the discussion is stop. > >> > >> Old thread link: > >> http://lkml.iu.edu//hypermail/linux/kernel/1307.1/01392.html > > > >Maybe this is just me, but this looks hackish. Why not clear > >the IRQ and queue a work resuming the HC and calling the handler? > > The controller is in suspended state which is power gated. How to access > its registers? We have to resume it first before clear IRQ. Sorry block was meant. You cannot clear the interrupt in a sleeping HC. But why depend on the resume() handler to redo the interrupt? We know there was an interrupt. We can call the handler. Regards Oliver -- 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
