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* drivers/gpu/drm/exynos/exynos_drm_dma.c:54:35: warning: implicit conversion from 'unsigned long long' to 'unsigned int' changes value from 18446744073709551615 to 4294967295
@ 2023-03-02  3:06 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-03-02  3:06 UTC (permalink / raw)
  To: Jacob Pan; +Cc: llvm, oe-kbuild-all, 0day robot, Dave Jiang, Jason Gunthorpe

tree:   https://github.com/intel-lab-lkp/linux/commits/Jacob-Pan/iommu-vt-d-Implement-set-device-pasid-op-for-default-domain/20230302-085748
head:   c74778cec2a6f8e221346b6f52df8d28edbe875c
commit: eb22c2f3d7656d7579d8ae82fda767e6baa6105c iommu/ioasid: Rename INVALID_IOASID
date:   2 hours ago
config: powerpc-buildonly-randconfig-r002-20230302 (https://download.01.org/0day-ci/archive/20230302/202303021035.rmJBGqQ4-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/eb22c2f3d7656d7579d8ae82fda767e6baa6105c
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Jacob-Pan/iommu-vt-d-Implement-set-device-pasid-op-for-default-domain/20230302-085748
        git checkout eb22c2f3d7656d7579d8ae82fda767e6baa6105c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/gpu/drm/exynos/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303021035.rmJBGqQ4-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/gpu/drm/exynos/exynos_drm_dma.c:8:
   include/linux/iommu.h:196:20: error: redefinition of 'pasid_valid'
   static inline bool pasid_valid(ioasid_t ioasid)
                      ^
   include/linux/ioasid.h:74:20: note: previous definition is here
   static inline bool pasid_valid(ioasid_t ioasid)
                      ^
>> drivers/gpu/drm/exynos/exynos_drm_dma.c:54:35: warning: implicit conversion from 'unsigned long long' to 'unsigned int' changes value from 18446744073709551615 to 4294967295 [-Wconstant-conversion]
           dma_set_max_seg_size(subdrv_dev, DMA_BIT_MASK(32));
           ~~~~~~~~~~~~~~~~~~~~             ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:40: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                          ^~~~~
   1 warning and 1 error generated.


vim +54 drivers/gpu/drm/exynos/exynos_drm_dma.c

67fbf3a3ef8443 Andrzej Hajda    2018-10-12  32  
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  33  /*
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  34   * drm_iommu_attach_device- attach device to iommu mapping
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  35   *
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  36   * @drm_dev: DRM device
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  37   * @subdrv_dev: device to be attach
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  38   *
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  39   * This function should be called by sub drivers to attach it to iommu
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  40   * mapping.
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  41   */
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  42  static int drm_iommu_attach_device(struct drm_device *drm_dev,
07dc3678bacc2a Marek Szyprowski 2020-03-09  43  				struct device *subdrv_dev, void **dma_priv)
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  44  {
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  45  	struct exynos_drm_private *priv = drm_dev->dev_private;
b9c633882de460 Marek Szyprowski 2020-06-01  46  	int ret = 0;
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  47  
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  48  	if (get_dma_ops(priv->dma_dev) != get_dma_ops(subdrv_dev)) {
6f83d20838c099 Inki Dae         2019-04-15  49  		DRM_DEV_ERROR(subdrv_dev, "Device %s lacks support for IOMMU\n",
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  50  			  dev_name(subdrv_dev));
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  51  		return -EINVAL;
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  52  	}
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  53  
ddfd4ab6bb0883 Marek Szyprowski 2020-07-07 @54  	dma_set_max_seg_size(subdrv_dev, DMA_BIT_MASK(32));
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  55  	if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) {
07dc3678bacc2a Marek Szyprowski 2020-03-09  56  		/*
07dc3678bacc2a Marek Szyprowski 2020-03-09  57  		 * Keep the original DMA mapping of the sub-device and
07dc3678bacc2a Marek Szyprowski 2020-03-09  58  		 * restore it on Exynos DRM detach, otherwise the DMA
07dc3678bacc2a Marek Szyprowski 2020-03-09  59  		 * framework considers it as IOMMU-less during the next
07dc3678bacc2a Marek Szyprowski 2020-03-09  60  		 * probe (in case of deferred probe or modular build)
07dc3678bacc2a Marek Szyprowski 2020-03-09  61  		 */
07dc3678bacc2a Marek Szyprowski 2020-03-09  62  		*dma_priv = to_dma_iommu_mapping(subdrv_dev);
07dc3678bacc2a Marek Szyprowski 2020-03-09  63  		if (*dma_priv)
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  64  			arm_iommu_detach_device(subdrv_dev);
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  65  
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  66  		ret = arm_iommu_attach_device(subdrv_dev, priv->mapping);
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  67  	} else if (IS_ENABLED(CONFIG_IOMMU_DMA)) {
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  68  		ret = iommu_attach_device(priv->mapping, subdrv_dev);
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  69  	}
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  70  
b9c633882de460 Marek Szyprowski 2020-06-01  71  	return ret;
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  72  }
67fbf3a3ef8443 Andrzej Hajda    2018-10-12  73  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

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2023-03-02  3:06 drivers/gpu/drm/exynos/exynos_drm_dma.c:54:35: warning: implicit conversion from 'unsigned long long' to 'unsigned int' changes value from 18446744073709551615 to 4294967295 kernel test robot

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