linux-kernel - linux-next: build failure after merge of the akpm tree

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Date:	Wed, 28 Sep 2011 19:22:20 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Joe Perches <joe@...ches.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	<linuxppc-dev@...ts.ozlabs.org>
Subject: linux-next: build failure after merge of the akpm tree

Hi Andrew,

After merging the akpm tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

In file included from arch/powerpc/boot/stdio.c:12:0:
arch/powerpc/boot/stdio.h:10:17: error: expected declaration specifiers or '...' before numeric constant
arch/powerpc/boot/stdio.h:10:20: error: expected declaration specifiers or '...' before numeric constant
arch/powerpc/boot/stdio.h:10:8: warning: return type defaults to 'int'
arch/powerpc/boot/stdio.h:10:8: warning: function declaration isn't a prototype
arch/powerpc/boot/stdio.h: In function '__printf':
arch/powerpc/boot/stdio.h:14:17: error: expected declaration specifiers or '...' before numeric constant
arch/powerpc/boot/stdio.h:14:20: error: expected declaration specifiers or '...' before numeric constant
arch/powerpc/boot/stdio.h:14:23: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'int'
arch/powerpc/boot/stdio.h:16:12: error: storage class specified for parameter 'vsprintf'

And went down hill from there (it produced hundreds of errors).

Caused by commit a52af697aaeb ("treewide: use __printf not __attribute__
((format(printf,...)))").  Maybe because some of these files are part of
the boot wrappers and are built (effectively) independently of the kernel
itself.  Notice that arch/powerpc/boot/stdio.h does not include any
kernel headers ...

I have reverted that commit (and the follup ones b31d03e43e56
"treewide-use-__printf-not-__attribute__formatprintf-checkpatch-fixes"
and f43c361e2bd9 "kernel.h/checkpatch: mark strict_strto<foo> and
simple_strto<foo> as obsolete") for today.
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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