Re: [PATCH 1/2] usb: xhci: implement AMD remote wakeup quirk

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On Thu, 22 Aug 2013, Sarah Sharp wrote:

> So, basically, whenever the xHCI host resumes from S3, you're going to
> reset mice attached to the ports.  Again, why only mice?
> 
> Alan, is there a way to force all devices under a host to have a reset
> resume quirk?

That's not really what you want, because this issue arises only when
waking up from a system suspend, not from a runtime suspend.  Besides, 
it's still not clear (to me, at least) that resetting the device is 
necessary.

However, if you really want to, you can force every device on a bus to
go through reset-resume during a system resume by calling
usb_root_hub_lost_power() when the controller or root hub resumes.

Alan Stern

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