linux-kernel - Re: [Nouveau] [PATCH nouveau 09/11] drm: export some variable and functions to resue the PM functions

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Message-ID: <20150105153252.GI12010@ulmo.nvidia.com>
Date:	Mon, 5 Jan 2015 16:32:54 +0100
From:	Thierry Reding <thierry.reding@...il.com>
To:	Vince Hsu <vinceh@...dia.com>
Cc:	Emil Velikov <emil.l.velikov@...il.com>, swarren@...dotorg.org,
	gnurou@...il.com, bskeggs@...hat.com, martin.peres@...e.fr,
	seven@...rod-online.com, samuel.pitoiset@...il.com,
	linux-tegra@...r.kernel.org, nouveau@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: Re: [Nouveau] [PATCH nouveau 09/11] drm: export some variable and
 functions to resue the PM functions

On Tue, Dec 30, 2014 at 11:18:34AM +0800, Vince Hsu wrote:
> Hi Emil,
> 
> On 12/30/2014 10:34 AM, Emil Velikov wrote:
> >On 23/12/14 10:40, Vince Hsu wrote:
> >>This patch adds some checks in the suspend/resume functions to distinguish
> >>the dGPU and mobile GPU and exports some variables/functions so that the
> >>nouveau platform device can reuse them.
> >>
> >Hi Vince,
> >
> >Afaiu one needs to export a symbol as it's used by another module or
> >subsystem. With the follow up two patches you are not doing either one,
> >so I'd assume that you can just omit the EXPORT_* changes.
> The nouveau platform device driver is built as another module -
> nouveau_platform.ko. :)

I'd like to hear the opinion of the nouveau people and Alex, but I'd
very much prefer if nouveau_platform.o was simply linked into the
nouveau.ko module. I don't see any good reason to keep it separate.

Something like the attached patch (untested) ought to do it.

Thierry

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