linux-kernel - Re: [PATCH] fbdev: fix frame buffer devices menu

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Date:	Wed, 2 Jun 2010 07:34:47 +0300
From:	Baruch Siach <baruch@...s.co.il>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com>,
	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Sascha Hauer <s.hauer@...gutronix.de>
Subject: Re: [PATCH] fbdev: fix frame buffer devices menu

Hi Andrew,

On Tue, Jun 01, 2010 at 02:28:06PM -0700, Andrew Morton wrote:
> On Thu, 27 May 2010 07:03:29 +0300
> Baruch Siach <baruch@...s.co.il> wrote:
> 
> > On Wed, May 26, 2010 at 02:54:37PM -0300, Thadeu Lima de Souza Cascardo wrote:
> > > Commit f601441916d1e19291d0b4f044b4a7551e2924d0 has inserted the symbol
> > > HAVE_FB_IMX, which does not depend on FB after the menuconfig FB. This
> > > breaks the menu, presenting most of the drivers outside of it, when
> > > using menuconfig.
> > > 
> > > Moving the symbol to the start of the file, just like HAVE_FB_ATMEL,
> > > fixes the problem without breaking it for iMX25 configurations (tested
> > > with ARCH=arm, no build).
> > > 
> > > Cc: Baruch Siach <baruch@...s.co.il>
> > > Cc: Uwe Kleine-K__nig <u.kleine-koenig@...gutronix.de>
> > > Cc: Sascha Hauer <s.hauer@...gutronix.de>
> > > Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com>
> > 
> > Acked-by: Baruch Siach <baruch@...s.co.il>
> > 
> 
> OK, I've been sitting on the below patch
> (fbdev-fix-kconfig-breakage-in-drivers-video.patch) for months, waiting
> for Krzysztof to respond to some comment which Baruch made, but
> Krzysztof seems to have gone quiet.
> 
> Could you guys please compare Thadeu's patch with the below and work
> out which is preferable and whether the new patch has the same coverage
> as the old one, etc?

Krzysztof's patch breaks the fb support for the MX25 platform, so I prefer 
Thadeu's approach. I have no objection to the

s/(FB = y) && (SPARC && FB_SBUS)/FB_SBUS/

thing, though.

baruch

> From: Krzysztof Helt <krzysztof.h1@...pl>
> 
> There are two new options inside the CONFIG_FB section which do not depend
> on the CONFIG_FB.  This break Kconfig menu layout.
> 
> Fix it and reduce few conditions for sparc frame buffers as the FB_SBUS ==
> ((FB = y) && SPARC).
> 
> Signed-off-by: Krzysztof Helt <krzysztof.h1@...pl>
> Acked-by: David S. Miller <davem@...emloft.net>
> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
> ---
> 
>  drivers/video/Kconfig |   11 ++++-------
>  1 file changed, 4 insertions(+), 7 deletions(-)
> 
> diff -puN drivers/video/Kconfig~fbdev-fix-kconfig-breakage-in-drivers-video drivers/video/Kconfig
> --- a/drivers/video/Kconfig~fbdev-fix-kconfig-breakage-in-drivers-video
> +++ a/drivers/video/Kconfig
> @@ -400,12 +400,9 @@ config FB_SA1100
>  	  If you plan to use the LCD display with your SA-1100 system, say
>  	  Y here.
>  
> -config HAVE_FB_IMX
> -	bool
> -
>  config FB_IMX
>  	tristate "Motorola i.MX LCD support"
> -	depends on FB && (HAVE_FB_IMX || ARCH_MX1 || ARCH_MX2)
> +	depends on FB && (ARCH_MX1 || ARCH_MX2)
>  	select FB_CFB_FILLRECT
>  	select FB_CFB_COPYAREA
>  	select FB_CFB_IMAGEBLIT
> @@ -802,7 +799,7 @@ config FB_SBUS
>  
>  config FB_BW2
>  	bool "BWtwo support"
> -	depends on (FB = y) && (SPARC && FB_SBUS)
> +	depends on FB_SBUS
>  	select FB_CFB_FILLRECT
>  	select FB_CFB_COPYAREA
>  	select FB_CFB_IMAGEBLIT
> @@ -811,7 +808,7 @@ config FB_BW2
>  
>  config FB_CG3
>  	bool "CGthree support"
> -	depends on (FB = y) && (SPARC && FB_SBUS)
> +	depends on FB_SBUS
>  	select FB_CFB_FILLRECT
>  	select FB_CFB_COPYAREA
>  	select FB_CFB_IMAGEBLIT
> @@ -820,7 +817,7 @@ config FB_CG3
>  
>  config FB_CG6
>  	bool "CGsix (GX,TurboGX) support"
> -	depends on (FB = y) && (SPARC && FB_SBUS)
> +	depends on FB_SBUS
>  	select FB_CFB_COPYAREA
>  	select FB_CFB_IMAGEBLIT
>  	help
> _
> 

-- 
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