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Date: Tue, 23 Dec 2014 05:40:37 +0000 From: "Du, Changbin" <changbin.du@...el.com> To: Alan Stern <stern@...land.harvard.edu> CC: "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Wu, Hao" <hao.wu@...el.com> Subject: RE: [DISCUSSION] USB device remote wakeup is not working for S3 case > You have to make sure that wakeup is also enabled for the host > controller the device is attached to. For some host controllers, it > may also be necessary to enable wakeup for the root hub. > Yes, the root-hub is not wakeup enabled by default, actually hub devices are not enabled. It works after I enable it via sysfs interface. > > Could we also enable wakeup for usb mouse? Or is there any concern to > enable it? > > Per my opinion, most people may expect clicking mouse can awake system. > > It doesn't matter to me, but you should ask the people on the > linux-input mailing list. > > Also, what about wakeup for a non-USB mouse? Shouldn't that be enabled > as well? Unfortunately the mouse I found are all of usb so cannot confirm it. The concern is if we want usb keyboard/mouse wakeup work by default, it does make sense only if the parent hubs are also enabled by default. This is a policy issue and may be better place it on userspace. I have no better idea :) . > > Alan Stern Regards Du, Changbin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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