linux-kernel - Re: [v6 2/3] iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #74

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Date:   Sat, 13 May 2017 09:04:57 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Geetha sowjanya <gakula@...iumnetworks.com>
Cc:     kbuild-all@...org, will.deacon@....com, robin.murphy@....com,
        lorenzo.pieralisi@....com, hanjun.guo@...aro.org,
        sudeep.holla@....com, iommu@...ts.linux-foundation.org,
        robert.moore@...el.com, lv.zheng@...el.com, rjw@...ysocki.net,
        jcm@...hat.com, linux-kernel@...r.kernel.org,
        robert.richter@...ium.com, catalin.marinas@....com,
        sgoutham@...ium.com, linux-arm-kernel@...ts.infradead.org,
        linux-acpi@...r.kernel.org, geethasowjanya.akula@...il.com,
        devel@...ica.org, linu.cherian@...ium.com,
        Charles.Garcia-Tobin@....com,
        Geetha Sowjanya <geethasowjanya.akula@...ium.com>
Subject: Re: [v6 2/3] iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2
 erratum #74

Hi Linu,

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on v4.11 next-20170512]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Geetha-sowjanya/Cavium-ThunderX2-SMMUv3-errata-workarounds/20170513-065956
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   drivers//iommu/arm-smmu-v3.c: In function 'acpi_smmu_get_options':
>> drivers//iommu/arm-smmu-v3.c:2605:15: error: 'ACPI_IORT_SMMU_CAVIUM_CN99XX' undeclared (first use in this function)
     if (model == ACPI_IORT_SMMU_CAVIUM_CN99XX)
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers//iommu/arm-smmu-v3.c:2605:15: note: each undeclared identifier is reported only once for each function it appears in

vim +/ACPI_IORT_SMMU_CAVIUM_CN99XX +2605 drivers//iommu/arm-smmu-v3.c

  2599		return 0;
  2600	}
  2601	
  2602	#ifdef CONFIG_ACPI
  2603	static void acpi_smmu_get_options(u32 model, struct arm_smmu_device *smmu)
  2604	{
> 2605		if (model == ACPI_IORT_SMMU_CAVIUM_CN99XX)
  2606			smmu->options |= ARM_SMMU_OPT_PAGE0_REGS_ONLY;
  2607	
  2608		dev_notice(smmu->dev, "option mask 0x%x\n", smmu->options);

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