linux-kernel - Re: [RFC: -next patch] don't allow FB_SIS=m, DRM

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Message-Id: <20080819153100.3bc3d8ef.randy.dunlap@oracle.com>
Date:	Tue, 19 Aug 2008 15:31:00 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Adrian Bunk <bunk@...nel.org>
Cc:	Dave Airlie <airlied@...ux.ie>,
	lkml <linux-kernel@...r.kernel.org>,
	akpm <akpm@...ux-foundation.org>
Subject: Re: [RFC: -next patch] don't allow FB_SIS=m, DRM_SIS=y

On Thu, 14 Aug 2008 00:57:28 +0300 Adrian Bunk wrote:

> On Tue, Aug 12, 2008 at 10:37:00PM +0100, Dave Airlie wrote:
> > 
> > > > 
> > > > Maybe the other way around, I don't want DRM_SIS influencing whether 
> > > > FB_SIS is on or off, if the user wants sisfb on, then when they select it, 
> > > > DRM_SIS should be built in the same way. But if sisfb isn't selected by 
> > > > the user, then selecting DRM_SIS shouldn't enable it.
> > > 
> > > If FB_SIS=m, should DRM_SIS=y be allowed or should in this case DRM_SIS 
> > > be restricted to n/m?
> > 
> > Probably not. if FB_SIS is selected at all, DRM_SIS should match it, if 
> > FB_SIS isn't selected, DRM_SIS should not select it.
> 
> I assume FB_SIS=y, DRM_SIS=m should still be possible?
> 
> If this assumption is correct the fix is below.
> 
> > Dave.
> 
> cu
> Adrian
> 
> 
> <--  snip  -->
> 
> 
> FB_SIS=m, DRM_SIS=y is not a legal configuration.
> 
> Reported-by: Randy Dunlap <randy.dunlap@...cle.com>
> Signed-off-by: Adrian Bunk <bunk@...nel.org>
> 
> ---
> c303119b9561e13be97f3d4b0d7eaa6930fc21d8 
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index 610d6fd..bf9003e 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -87,6 +87,7 @@ config DRM_MGA
>  config DRM_SIS
>  	tristate "SiS video cards"
>  	depends on DRM && AGP
> +	depends on FB_SIS || FB_SIS=n
>  	help
>  	  Choose this option if you have a SiS 630 or compatible video
>            chipset. If M is selected the module will be called sis. AGP
> 
> --

Thanks, Adrian.

I don't know if that's the proper fix, but something needs to be fixed/merged.  :(


---
~Randy
Linux Plumbers Conference, 17-19 September 2008, Portland, Oregon USA
http://linuxplumbersconf.org/
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