linux-kernel - Re: [PATCH 4/5 v2] pseries/iommu: implement DDW-aware dma_get_page

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Date:	Tue, 06 Oct 2015 14:39:06 +1100
From:	Michael Ellerman <mpe@...erman.id.au>
To:	kbuild test robot <lkp@...el.com>
Cc:	Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>, kbuild-all@...org,
	Matthew Wilcox <willy@...ux.intel.com>,
	Keith Busch <keith.busch@...el.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Alexey Kardashevskiy <aik@...abs.ru>,
	David Gibson <david@...son.dropbear.id.au>,
	Christoph Hellwig <hch@...radead.org>,
	linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 4/5 v2] pseries/iommu: implement DDW-aware
 dma_get_page_shift

On Sat, 2015-10-03 at 04:33 +0800, kbuild test robot wrote:
> Hi Nishanth,
> 
> [auto build test results on v4.3-rc3 -- if it's inappropriate base, please ignore]
> 
> config: powerpc-defconfig (attached as .config)
> reproduce:
>         wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         make.cross ARCH=powerpc 
> 
> All error/warnings (new ones prefixed by >>):
> 
>    arch/powerpc/platforms/pseries/iommu.c: In function 'iommu_init_early_pSeries':
> >> arch/powerpc/platforms/pseries/iommu.c:1433:9: error: 'struct machdep_calls' has no member named 'dma_get_page_shift'
>       ppc_md.dma_get_page_shift = dma_get_page_shift_pSeriesLP;

It was added in patch 3/5, so I think this error is bogus. Unless there's a
typo I'm missing?

cheers



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