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Date: Fri, 17 Jul 2015 12:34:26 +0200
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From: Takashi Iwai <tiwai@suse.de>
To: Greg KH <greg@kroah.com>
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Cc: "Brown, Len" <len.brown@intel.com>,
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Subject: Re: [Ksummit-discuss] [TECH TOPIC] System-wide interface to specify
	the level of PM tuning
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On Thu, 16 Jul 2015 17:58:19 +0200,
Greg KH wrote:
> 
> On Thu, Jul 16, 2015 at 08:53:02AM -0700, Josh Triplett wrote:
> > But the kernel already has quirk tables for various hardware, and that
> > seems appropriate to continue putting in the kernel.
> 
> For some types of devices, sure.  For others, like broken USB keyboards
> that can't handle autosuspend, no.  For those we need a userspace
> _whitelist_ that udev can use.  So there's no one answer that works for
> all types of quirks.

That's my concern, too.  If we give a single knob for all components,
most likely some components shall be broken.  And I'm sure that many of
the breakage will be left unfixed due to all reasons you can imagine.


Takashi