Re: Overly conservative xHCI bandwidth estimation

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On Wed, 21 Oct 2015, Steinar H. Gunderson wrote:

> On Wed, Oct 21, 2015 at 09:49:16AM +0800, Lu, Baolu wrote:
> > I could spend some time on this issue a week later.
> > I'd like to check whether there is any bugs in the driver itself.
> > Otherwise, blacklist this specific device for LPM.
> 
> Is there such a blacklist already, where I can add the devices (there are two
> distinct IDs behaving identically) and see if it helps?

There is a blacklist, but it does not affect LPM.  See 
drivers/usb/core/quirks.c and include/linux/usb/quirks.h.

Alan Stern

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