linux-kernel - Re: [PATCH v1 2/3] PM / Sleep: introduce dpm_for_each

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Date:	Sat, 18 Aug 2012 23:20:11 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Ming Lei <ming.lei@...onical.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Borislav Petkov <borislav.petkov@....com>,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v1 2/3] PM / Sleep: introduce dpm_for_each_dev

On Sat, Aug 18, 2012 at 10:49:06PM +0200, Rafael J. Wysocki wrote:
> On Saturday, August 18, 2012, Rafael J. Wysocki wrote:
> > On Saturday, August 18, 2012, Ming Lei wrote:
> > > On Sat, Aug 18, 2012 at 9:38 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> > > >
> > > > My question was about the number of current users of it.  Sorry for not
> > > > being clear.
> > > 
> > > Sorry for misunderstanding your question.
> > > 
> > > >
> > > > If there are no more anticipated users than the current only one, please
> > > > drop the unused (void *) argument.  We can always extend it in the future
> > > > if need be and for now passing that NULL every time is just pointless.
> > > 
> > > One usage is to get statistics info about devices for debug purpose,
> > > so the parameter is needed to return something.
> > 
> > So, what's the name of the _second_ function using dpm_for_each_dev()?
> > 
> > I don't see any and device_cache_fw_images() in [3/3] clearly passes
> > NULL as the first argument.
> > 
> > > > And please fold [2/3] into [3/3] in this series.
> > > 
> > > IMO, it is better to split them to avoid coupling between fw loader and
> > > device PM.
> > > 
> > > Looks you agreed on the patch,
> > 
> > On the idea, not on the actual code.  I told you what I wanted to to change in
> > it, didn't I?
> > 
> > > and Greg has added the
> > > patch into his driver-core next tree to fix -next build failure, so could
> > > you just let them be that?
> > 
> > -next is not cast in stone, you can replace patches in it with other ones
> > if need be.
> 
> And it actually would be better if you replaced the patches that had introduced
> the build problems with new fixed ones, because otherwise your whole series
> has bisection issues potentially.
> 
> And since the Greg's patch queue is quilt-based, for what I can tell, that's
> entirely doable.

No, my patch queue hasn't been quilt-based for almost 2 years now.  It's
git-based, and I can revert anything that I need to, including this
whole series, but I can't rewrite history, sorry.

greg k-h
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