linux-kernel - Re: [RFC v2 6/8] gpu: drm: tegra: Remove redundant host1x

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Date:	Thu, 20 Dec 2012 20:01:43 +0200
From:	Terje Bergström <tbergstrom@...dia.com>
To:	Stephen Warren <swarren@...dotorg.org>
CC:	Thierry Reding <thierry.reding@...onic-design.de>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Arto Merilainen <amerilainen@...dia.com>
Subject: Re: [RFC v2 6/8] gpu: drm: tegra: Remove redundant host1x

On 20.12.2012 19:55, Stephen Warren wrote:
> So it's fine for the tegradrm driver to manipulate the tegradrm
> (virtual) device's drvdata pointer.
> 
> It's not fine for tegradrm to manipulate the drvdata pointer of other
> devices; the host1x children. The drvdata pointer for other devices is
> reserved for those devices' driver's use only.

They're all tegradrm drivers, so tegradrm can manipulate its drvdata.
The other simple way is global pointer. Let's aim now for a simple
solution, and if later we find out it causes problems, let's fix it then.

Terje
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