linux-kernel - Re: linux-next: origin tree build failure

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Date:	Mon, 12 Jan 2009 20:49:51 +1100
From:	Michael Ellerman <michael@...erman.id.au>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Rusty Russell <rusty@...tcorp.com.au>,
	LKML <linux-kernel@...r.kernel.org>,
	Mike Travis <travis@....com>, linuxppc-dev@...abs.org,
	linux-next@...r.kernel.org, Paul Mackerras <paulus@...ba.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: linux-next: origin tree build failure

On Mon, 2009-01-12 at 10:05 +0100, Ingo Molnar wrote:
> * Benjamin Herrenschmidt <benh@...nel.crashing.org> wrote:
> 
> > On Mon, 2009-01-12 at 10:48 +1100, Stephen Rothwell wrote:
> > > Hi Linus,
> > > 
> > > Today's linux-next build (powerpc ppc64_defconfig) failed like this:
> > > 
> > > arch/powerpc/platforms/pasemi/cpufreq.c: In function 'pas_cpufreq_cpu_init':
> > > arch/powerpc/platforms/pasemi/cpufreq.c:216: error: incompatible types in assignment
> > > arch/powerpc/platforms/powermac/cpufreq_64.c: In function 'g5_cpufreq_cpu_init':
> > > arch/powerpc/platforms/powermac/cpufreq_64.c:365: error: incompatible types in assignment
> > > arch/powerpc/platforms/cell/cbe_cpufreq.c: In function 'cbe_cpufreq_cpu_init':
> > > arch/powerpc/platforms/cell/cbe_cpufreq.c:121: error: incompatible types in assignment
> > > 
> > > Caused by commit 835481d9bcd65720b473db6b38746a74a3964218 ("cpumask:
> > > convert struct cpufreq_policy to cpumask_var_t") which missed updating
> > > all the powerpc (at least) cpufreq drivers.
> > 
> > Yeah, it only updates x86 it seems ... 
> 
> Yeah - and that build bug was stupid too - when touching a generic file 
> that is called include/linux/cpufreq.h and changing a key data field one 
> should at minimum get the idea that it's generic for a reason and should 
> start grepping the tree ...
> 
> It slipped through because it didnt get caught in build tests because 
> cpufreq isnt enabled in the powerpc defconfig.

Which defconfig?

powerpc(master) $ git grep CPU_FREQ=y arch/powerpc/configs/ppc64_defconfig
arch/powerpc/configs/ppc64_defconfig:CONFIG_CPU_FREQ=y

cheers

-- 
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person

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