Re: [PATCH v3 1/2] USB: quirks: Check device interface LPM capability

From: Kyle Williams
Date: Thu Jan 10 2019 - 10:49:15 EST


On Wed, Dec 12, 2018 at 12:37:09PM +0100, Greg Kroah-Hartman wrote:
> On Fri, Dec 07, 2018 at 08:47:21PM -0500, Kyle Williams wrote:
> > From: Kyle Williams <kdgwill@xxxxxxxxxxxx>
> >
> > Description: enable the ability to disable LPM for all devices matched
> > by interface information
>
> Why have "Description:" in here? Of course this is the description :)
>
> And the subject doesn't make much sense, what does this have to do with
> quirks?
>
> Also, you need more information here in the description about why you
> are doing all of this, as it is, I have no idea why this patch is needed
> at all.
>
> thanks,
>
> greg k-h

It seems the underlying issue has been solved in
0472bf0 xhci: Prevent U1/U2 link pm states if exit latency is too long

However, the patch to fix the issue when matching the USB_QUIRK_NO_LPM
quirk by iterface could be useful in the future. Currently nothing will
happen that quirk is matched by interface instead of by vid/pid pair.
Is their anything that would need to be changed besides removing the
Description tag?

-Kyle