linux-kernel - Re: [patch] fix omap compile with randconfig

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Message-ID: <20140113224913.GA16235@amd.pavel.ucw.cz>
Date:	Mon, 13 Jan 2014 23:49:13 +0100
From:	Pavel Machek <pavel@....cz>
To:	Olof Johansson <olof@...om.net>
Cc:	pali.rohar@...il.com, sre@...ian.org, sre@...g0.de,
	kernel list <linux-kernel@...r.kernel.org>,
	Tony Lindgren <tony@...mide.com>,
	linux-omap <linux-omap@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [patch] fix omap compile with randconfig

On Mon 2014-01-13 10:02:58, Olof Johansson wrote:
> On Sun, Jan 12, 2014 at 5:00 PM, Pavel Machek <pavel@....cz> wrote:
> >
> > This fixes:
> >
> > arch/arm/mach-omap2/built-in.o: In function `omap_reserve':
> > /data/l/linux-n900/arch/arm/mach-omap2/common.c:36: undefined
> >   reference to `omap_fb_reserve_memblock'
> >
> > Signed-off-by: Pavel Machek <pavel@....cz>
> >
> > diff --git a/arch/arm/mach-omap2/common.c b/arch/arm/mach-omap2/common.c
> > index 9beecde..857907f 100644
> > --- a/arch/arm/mach-omap2/common.c
> > +++ b/arch/arm/mach-omap2/common.c
> > @@ -33,5 +33,7 @@ void __init omap_reserve(void)
> >         omap_dsp_reserve_sdram_memblock();
> >         omap_secure_ram_reserve_memblock();
> >         omap_barrier_reserve_memblock();
> > +#ifdef CONFIG_OMAP2_VRFB
> >         omap_fb_reserve_memblock();
> > +#endif
> >  }
> 
> What is this patch against? omap_fb_reserve_memblock() doesn't exist
> in v3.13-rc8, nor in -next.

It is actually against -n900 tree, sorry about that. But this means
that this regression likely will not hit -next :-).

> Adding an ifdef here is likely the wrong thing anyway, there should be
> a stub provided for !CONFIG_OMAP2_VRFB in the header file instead.

Agreed.

I found few more compile problems, but those are neither easy nor I
expect them to happen commonly. In particular BIG_ENDIAN=y breaks
flexcan, MMU=n break some core code, and CONFIG_ARM_KPROBES_TEST=y
just does not work with my compiler here. Probably not worth trying to
reproduce on vanilla tree?

Thanks,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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