Re: [PATCH v3 2/2] iommu/exynos: Add proper runtime pm support

[kbuild test robot]

Hi Marek,

[auto build test ERROR on iommu/next]
[also build test ERROR on v4.8-rc6 next-20160913]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url:    https://github.com/0day-ci/linux/commits/Marek-Szyprowski/Exynos-IOMMU-proper-runtime-PM-support-use-device-dependencies/20160913-205434
base:   https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 5.4.0-6) 5.4.0 20160609
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=arm 

All errors (new ones prefixed by >>):

   drivers/iommu/exynos-iommu.c: In function 'exynos_iommu_of_xlate':
>> drivers/iommu/exynos-iommu.c:1232:2: error: implicit declaration of function 'device_link_add' [-Werror=implicit-function-declaration]
     device_link_add(dev, data->sysmmu, DEVICE_LINK_AVAILABLE,
     ^
>> drivers/iommu/exynos-iommu.c:1232:37: error: 'DEVICE_LINK_AVAILABLE' undeclared (first use in this function)
     device_link_add(dev, data->sysmmu, DEVICE_LINK_AVAILABLE,
                                        ^
   drivers/iommu/exynos-iommu.c:1232:37: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/iommu/exynos-iommu.c:1233:4: error: 'DEVICE_LINK_PERSISTENT' undeclared (first use in this function)
       DEVICE_LINK_PERSISTENT | DEVICE_LINK_PM_RUNTIME);
       ^
>> drivers/iommu/exynos-iommu.c:1233:29: error: 'DEVICE_LINK_PM_RUNTIME' undeclared (first use in this function)
       DEVICE_LINK_PERSISTENT | DEVICE_LINK_PM_RUNTIME);
                                ^
   cc1: some warnings being treated as errors

vim +/device_link_add +1232 drivers/iommu/exynos-iommu.c

  1226	
  1227		/*
  1228		 * SYSMMU will be runtime enabled via device link (dependency) to its
  1229		 * master device, so there are no direct calls to pm_runtime_get/put
  1230		 * in this driver.
  1231		 */
> 1232		device_link_add(dev, data->sysmmu, DEVICE_LINK_AVAILABLE,
> 1233				DEVICE_LINK_PERSISTENT | DEVICE_LINK_PM_RUNTIME);
  1234	
  1235		return 0;
  1236	}

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