[frank-w-bpi-r2-4.14:5.14-hdmilarb2 42/48] drivers/iommu/of_iommu.c:30:9: sparse: sparse: non size-preserving pointer to integer cast

[frank-w-bpi-r2-4.14:5.14-hdmilarb2 42/48] drivers/iommu/of_iommu.c:30:9: sparse: sparse: non size-preserving pointer to integer cast

[kernel test robot]

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tree:   https://github.com/frank-w/BPI-R2-4.14 5.14-hdmilarb2
head:   77b4c96140f9bec5bb54fc804b401af1c9a6b4b5
commit: a03e47787fdf1b8cf17dff02113ca385b4aaa131 [42/48] iommu, more debug
config: sparc-randconfig-s031-20210718 (attached as .config)
compiler: sparc64-linux-gcc (GCC) 10.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        # https://github.com/frank-w/BPI-R2-4.14/commit/a03e47787fdf1b8cf17dff02113ca385b4aaa131
        git remote add frank-w-bpi-r2-4.14 https://github.com/frank-w/BPI-R2-4.14
        git fetch --no-tags frank-w-bpi-r2-4.14 5.14-hdmilarb2
        git checkout a03e47787fdf1b8cf17dff02113ca385b4aaa131
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc SHELL=/bin/bash drivers/iommu/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
>> drivers/iommu/of_iommu.c:30:9: sparse: sparse: non size-preserving pointer to integer cast
   drivers/iommu/of_iommu.c:32:17: sparse: sparse: non size-preserving pointer to integer cast

vim +30 drivers/iommu/of_iommu.c

    21	
    22	static int of_iommu_xlate(struct device *dev,
    23				  struct of_phandle_args *iommu_spec)
    24	{
    25		const struct iommu_ops *ops;
    26		struct fwnode_handle *fwnode = &iommu_spec->np->fwnode;
    27		int ret;
    28	
    29		ops = iommu_ops_from_fwnode(fwnode);
  > 30		dev_err(dev,"%s:%d ops:%08x",__FUNCTION__,__LINE__,(unsigned int)ops);
    31		if (ops)
    32			dev_err(dev,"%s:%d xlate:%08x",__FUNCTION__,__LINE__,(unsigned int)ops->of_xlate);
    33	
    34		if ((ops && !ops->of_xlate) ||
    35		    !of_device_is_available(iommu_spec->np))
    36		{
    37			dev_err(dev,"no iommu");
    38			return NO_IOMMU;
    39		}
    40		ret = iommu_fwspec_init(dev, &iommu_spec->np->fwnode, ops);
    41		if (ret)
    42			return ret;
    43		/*
    44		 * The otherwise-empty fwspec handily serves to indicate the specific
    45		 * IOMMU device we're waiting for, which will be useful if we ever get
    46		 * a proper probe-ordering dependency mechanism in future.
    47		 */
    48		if (!ops)
    49			return driver_deferred_probe_check_state(dev);
    50	
    51		if (!try_module_get(ops->owner))
    52			return -ENODEV;
    53	
    54		ret = ops->of_xlate(dev, iommu_spec);
    55		module_put(ops->owner);
    56		return ret;
    57	}
    58	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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