linux-kernel - Re: [PATCH v8 0/2] ommu/exynos: Add IOMMU/System MMU driver for Samsung Exynos

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Message-ID: <20120103131048.GD29877@amd.com>
Date:	Tue, 3 Jan 2012 14:10:48 +0100
From:	'Joerg Roedel' <joerg.roedel@....com>
To:	Marek Szyprowski <m.szyprowski@...sung.com>
CC:	'KyongHo Cho' <pullip.cho@...sung.com>,
	'Kukjin Kim' <kgene.kim@...sung.com>,
	'Subash Patel' <subash.ramaswamy@...aro.org>,
	<linux-kernel@...r.kernel.org>,
	'Younglak Kim' <younglak1004.kim@...sung.com>,
	<iommu@...ts.linux-foundation.org>,
	<linux-samsung-soc@...r.kernel.org>,
	'Kyungmin Park' <kyungmin.park@...sung.com>,
	'Sanghyun Lee' <sanghyun75.lee@...sung.com>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v8 0/2] ommu/exynos: Add IOMMU/System MMU driver for
 Samsung Exynos

Hi Marek,

On Tue, Jan 03, 2012 at 10:37:29AM +0100, Marek Szyprowski wrote:
> Yes, there is something a bit wrong with your kernel configuration. You get this error if 
> there is no board selected to be compiled-in. Please go to kernel configuration and select
> "System Type -> SAMSUNG EXYNOS SoCs Suppport". Then select some hardware board to be 
> compiled in, for example SMDKV310, SMDKC210 and "Mobile NURI board".

thanks for this info. I selected a board and compile of linux-next now
fails with:

  LD      .tmp_vmlinux1
arch/arm/mach-exynos/built-in.o: In function `exynos4_pm_resume':
/data/lemmy/linux.trees.git/arch/arm/mach-exynos/pm.c:385: undefined reference to `scu_enable'
make[1]: *** [.tmp_vmlinux1] Error 1

This is because scu_enable() is only available with CONFIG_SMP=y which
is not set for Exynos.


	Joerg

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