linux-kernel - Re: -mm merge plans for 2.6.20

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Message-Id: <20061206154020.bdc0e09a.akpm@osdl.org>
Date:	Wed, 6 Dec 2006 15:40:20 -0800
From:	Andrew Morton <akpm@...l.org>
To:	James Simmons <jsimmons@...radead.org>
Cc:	linux-kernel@...r.kernel.org, Yu Luming <luming.yu@...il.com>,
	Miguel Ojeda Sandonis <maxextreme@...il.com>
Subject: Re: -mm merge plans for 2.6.20

On Tue, 5 Dec 2006 21:34:16 +0000 (GMT)
James Simmons <jsimmons@...radead.org> wrote:

> Here you go. This patch places the backlight before the framebuffers. You
> will now be able to select using the backlight with various framebuffer 
> drivers.

This doesn't work right for me.  x86_64 allmodconfig enables
CONFIG_FB_ATY_BACKLIGHT but fails to enable FB_BACKLIGHT so things won't
build.

drivers/video/aty/atyfb_base.c: In function 'aty_bl_get_level_brightness':
drivers/video/aty/atyfb_base.c:2130: error: 'struct fb_info' has no member named 'bl_curve'

I'm not sure how to fix it, either.  Are things like
CONFIG_FB_ATY_BACKLIGHT _really_ supposed to be pmac-only?

menuconfig says:

 Symbol: FB_BACKLIGHT [=FB_BACKLIGHT]
	Selected by: PMAC_BACKLIGHT && (PPC || MAC) && ADB_PMU && FB=y && (BROKEN || !PPC64)

Surely CONFIG_FB_ATY_BACKLIGHT should depend upon FB_BACKLIGHT?

How come I have CONFIG_BACKLIGHT_CLASS_DEVICE and things like that but
CONFIG_FB_BACKLIGHT=n?

And a `make oldconfig' says

drivers/macintosh/Kconfig:126:warning: 'select' used by config symbol 'PMAC_BACKLIGHT' refer to undefined symbol 'FB_BACKLIGHT'

Here's what allmodconfig gave:

akpm2:/usr/src/25> grep BACKL .config
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_BACKLIGHT_CLASS_DEVICE=m
CONFIG_BACKLIGHT_DEVICE=y
CONFIG_FB_NVIDIA_BACKLIGHT=y
CONFIG_FB_RIVA_BACKLIGHT=y
CONFIG_FB_RADEON_BACKLIGHT=y
CONFIG_FB_ATY128_BACKLIGHT=y
CONFIG_FB_ATY_BACKLIGHT=y

Anyway, it seems all screwed up - I'll drop the patch.
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