linux-kernel - Re: [PATCH] Add ARCH_MIGHT_HAVE_VGA

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Date:	Tue, 03 Feb 2015 13:42:02 +0900
From:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux-Arch <linux-arch@...r.kernel.org>
Subject: Re: [PATCH] Add ARCH_MIGHT_HAVE_VGA_CONSOLE

At Mon, 02 Feb 2015 21:11:50 +0100,
Arnd Bergmann wrote:
> 
> On Tuesday 03 February 2015 00:48:20 Yoshinori Sato wrote:
> > At Mon, 2 Feb 2015 09:10:06 +0100,
> > Geert Uytterhoeven wrote:
> > > 
> > > Hi Sato-san,
> > > 
> > > 
> > > On Mon, Feb 2, 2015 at 8:24 AM, Yoshinori Sato
> > > <ysato@...rs.sourceforge.jp> wrote:
> > > > The dependence of VGA_CONSOLE is complicated.
> > > > We need clean up.
> > > 
> > > Thanks!
> > > 
> > > > Signed-off-by: Yoshinori Sato <ysato@...rs.sourceforge.jp>
> > > >
> > > > ---
> > > >  arch/alpha/Kconfig            | 1 +
> > > >  arch/arc/Kconfig              | 1 +
> > > >  arch/arm/Kconfig              | 1 +
> > > >  arch/c6x/Kconfig              | 1 +
> > > >  arch/hexagon/Kconfig          | 1 +
> > > >  arch/ia64/Kconfig             | 1 +
> > > >  arch/m32r/Kconfig             | 1 +
> > > >  arch/metag/Kconfig            | 1 +
> > > >  arch/microblaze/Kconfig       | 1 +
> > > >  arch/mips/Kconfig             | 1 +
> > > >  arch/nios2/Kconfig            | 1 +
> > > >  arch/openrisc/Kconfig         | 1 +
> > > >  arch/powerpc/Kconfig          | 1 +
> > > >  arch/s390/Kconfig             | 1 +
> > > >  arch/score/Kconfig            | 1 +
> > > >  arch/tile/Kconfig             | 1 +
> > > >  arch/um/Kconfig.common        | 1 +
> > > >  arch/unicore32/Kconfig        | 1 +
> > > >  arch/x86/Kconfig              | 1 +
> > > >  arch/xtensa/Kconfig           | 1 +
> > > 
> > > While I know you just kept the existing logic from
> > > drivers/video/console/kconfig,
> > > I doubt all of the architectures listed above do support VGA.
> > > I guest most of them were just too lazy to update the dependency list.
> > > 
> > > I think only alpha, arm, ia64, mips, powerpc, and x86 can have VGA.
> 
> The list looks right to me too. We could be more specific in case of ARM,
> MIPS and PowerPC and move the symbols into the individual platforms that
> do support it, but it's fine to leave this up to the architecture
> maintainers.
> 
> > Hmm...
> > If require, Add this flag.
> > 
> > Signed-off-by: Yoshinori Sato <ysato@...rs.sourceforge.jp>
> 
> Reviewed-by: Arnd Bergmann <arnd@...db.de>
> 
> Please add this patch to your series with my Reviewed-by line added.

OK.

> except for one thing:
> 
> > --- a/arch/arm/Kconfig
> > +++ b/arch/arm/Kconfig
> > @@ -76,6 +76,7 @@ config ARM
> >        select PERF_USE_VMALLOC
> >        select RTC_LIB
> >        select SYS_SUPPORTS_APM_EMULATION
> >+       select ARCH_MIGHT_HAVE_VGA_CONSOLE if ARCH_FOOTBRIDGE || ARCH_INTEGRATOR || ARCH_NETWINDER
> >        # Above selects are sorted alphabetically; please add new ones
> >        # according to that.  Thanks.
> >        help
> 
> You did not read the comment in the patch context: This list of selects is
> sorted alphabetically in order to avoid merge conflicts. Please keep it this
> way.

Ouch.
I will fix v3.

> Thanks,
> 
> 	Arnd

-- 
Yoshinori Sato
<ysato@...rs.sourceforge.jp>
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