linux-kernel - Re: Build regressions/improvements in v4.0-rc1

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Message-ID: <5721217.aGU5oqfDWo@wuerfel>
Date:	Mon, 23 Feb 2015 11:24:46 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	ALSA Development Mailing List <alsa-devel@...a-project.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	willy@...ux.intel.com
Subject: Re: Build regressions/improvements in v4.0-rc1

On Monday 23 February 2015 10:14:55 Geert Uytterhoeven wrote:
> On Mon, Feb 23, 2015 at 10:03 AM, Arnd Bergmann <arnd@...db.de> wrote:
> >> >   + /home/kisskb/slave/src/fs/dax.c: error: implicit declaration of function 'copy_user_page' [-Werror=implicit-function-declaration]:  => 266:2
> >
> > DAX support was merged with 'depends on !(ARM || MIPS || SPARC)', so I don't
> > see how this could happen.
> 
> sh is not ARM, not MIPS, not SPARC, so...?

I misread your email and thought this was still under arm-randconfig.

I checked the other architectures, and found that the same is missing on
ARC, so we should add both:

diff --git a/fs/Kconfig b/fs/Kconfig
index ec35851e5b71..a24d496787d6 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -36,7 +36,7 @@ source "fs/nilfs2/Kconfig"
 config FS_DAX
 	bool "Direct Access (DAX) support"
 	depends on MMU
-	depends on !(ARM || MIPS || SPARC)
+	depends on !(ARC || ARM || MIPS || SH || SPARC)
 	help
 	  Direct Access (DAX) can be used on memory-backed block devices.
 	  If the block device supports DAX and the filesystem supports DAX,


It's also not implemented on c6x and blackfin, but both of them have
MMU=n, so they are already excluded.

> >> sh-randconfig
> 
> >> >   + /home/kisskb/slave/src/sound/soc/codecs/max98357a.c: error: implicit declaration of function 'devm_gpiod_get' [-Werror=implicit-function-declaration]:  => 55:2
> >> >   + /home/kisskb/slave/src/sound/soc/codecs/max98357a.c: error: implicit declaration of function 'gpiod_direction_output' [-Werror=implicit-function-declaration]:  => 61:2
> >> >   + /home/kisskb/slave/src/sound/soc/codecs/max98357a.c: error: implicit declaration of function 'gpiod_set_value' [-Werror=implicit-function-declaration]:  => 30:3
> >
> > Something wrong in arch/sh/include/asm/gpio.h? the codec is only
> > selectable when gpiolib is enabled, but the consumer.h header
> > apparently does not get included here.
> 
> I think it's an bad select, for which a patch has been available since
> about 2 weeks.

Ah, right. I was looking at linux-next, which has the fix, so I did not
see the problem at first.

	Arnd
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