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

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Message-ID: <201510030421.d9fvrbXU%fengguang.wu@intel.com>
Date:	Sat, 3 Oct 2015 04:33:00 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>
Cc:	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>,
	Michael Ellerman <mpe@...erman.id.au>,
	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

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;
            ^

vim +1433 arch/powerpc/platforms/pseries/iommu.c

  1427	
  1428		if (firmware_has_feature(FW_FEATURE_LPAR)) {
  1429			pseries_pci_controller_ops.dma_bus_setup = pci_dma_bus_setup_pSeriesLP;
  1430			pseries_pci_controller_ops.dma_dev_setup = pci_dma_dev_setup_pSeriesLP;
  1431			ppc_md.dma_set_mask = dma_set_mask_pSeriesLP;
  1432			ppc_md.dma_get_required_mask = dma_get_required_mask_pSeriesLP;
> 1433			ppc_md.dma_get_page_shift = dma_get_page_shift_pSeriesLP;
  1434		} else {
  1435			pseries_pci_controller_ops.dma_bus_setup = pci_dma_bus_setup_pSeries;
  1436			pseries_pci_controller_ops.dma_dev_setup = pci_dma_dev_setup_pSeries;

---
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