linux-kernel - Re: [Intel-gfx] [PATCH 2/5] i915: Add native backlight control

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Date:	Thu, 20 Jan 2011 17:03:37 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Ali Gholami Rudi <aliqrudi@...il.com>,
	intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, linux-acpi@...r.kernel.org,
	rpurdie@...ys.net
Subject: Re: [Intel-gfx] [PATCH 2/5] i915: Add native backlight control

On Fri, 21 Jan 2011 00:43:59 +0000
Matthew Garrett <mjg59@...f.ucam.org> wrote:

> On Thu, Jan 20, 2011 at 03:13:49PM -0800, Andrew Morton wrote:
> > On Fri, 21 Jan 2011 00:43:46 +0330
> > Ali Gholami Rudi <aliqrudi@...il.com> wrote:
> > 
> > > Ali Gholami Rudi <aliqrudi@...il.com> wrote:
> > > > I tried to apply this patch but I get:
> > > > 
> > > > 	drivers/gpu/drm/i915/intel_panel.c: In function 'intel_panel_setup_backlight':
> > > > 	drivers/gpu/drm/i915/intel_panel.c:319: error: 'struct backlight_properties' has no member named 'type'
> > > > 	drivers/gpu/drm/i915/intel_panel.c:319: error: 'BACKLIGHT_RAW' undeclared (first use in this function)
> > > > 	drivers/gpu/drm/i915/intel_panel.c:319: error: (Each undeclared identifier is reported only once
> > > > 	drivers/gpu/drm/i915/intel_panel.c:319: error: for each function it appears in.)
> > > 
> > > After applying patch 1/5, the patch applied cleanly.
> > > Now I can change the brightness using
> > > /sys/class/backlight/intel_backlight/brightness.
> > > So it does fix my issue.
> > > 
> > 
> > So we have a patch ordering issue and the
> > radeon-expose-backlight-class-device-for-legacy-lvds-encoder.patch
> > build error.
> 
> He applied 2/5, it didn't build, he applied 1/5 and it built? I don't 
> think that's a patch ordering issue :)

What, you expect reading skills?

> I think Michel's patch should fix the Radeon one. If not, can you drop 
> that and keep the rest of the set? I'm travelling at the moment and 
> won't have proper build access until the weekend.

OK, I resurrected everything.

I updated the new drivers/video/backlight/adp5520_bl.c, but there's a
decent chance that unconverted drivers will sneak in.  I trust they
will still work OK?

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