[intel-linux-intel-lts:5.4/yocto 72/1142] drivers/gpu/drm/kmb/kmb_drv.c:99:31: sparse: sparse: incorrect type in return expression (different address spaces)

[kernel test robot <lkp@intel.com>]

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tree:   https://github.com/intel/linux-intel-lts.git 5.4/yocto
head:   eeb611e5394c56d45c5cc8f7dc484c9f19e93143
commit: d855ca729624b25fa0552c548f8805b63bb0c017 [72/1142] drm/kmb: Cleanup probe functions
config: arm64-randconfig-s031-20210202 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
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: v0.6.3-215-g0fb77bb6-dirty
        # https://github.com/intel/linux-intel-lts/commit/d855ca729624b25fa0552c548f8805b63bb0c017
        git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git
        git fetch --no-tags intel-linux-intel-lts 5.4/yocto
        git checkout d855ca729624b25fa0552c548f8805b63bb0c017
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64 

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/gpu/drm/kmb/kmb_drv.c:99:31: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected void [noderef] <asn:2> * @@     got void * @@
   drivers/gpu/drm/kmb/kmb_drv.c:99:31: sparse:     expected void [noderef] <asn:2> *
   drivers/gpu/drm/kmb/kmb_drv.c:99:31: sparse:     got void *
   drivers/gpu/drm/kmb/kmb_drv.c:104:31: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected void [noderef] <asn:2> * @@     got void * @@
   drivers/gpu/drm/kmb/kmb_drv.c:104:31: sparse:     expected void [noderef] <asn:2> *
   drivers/gpu/drm/kmb/kmb_drv.c:104:31: sparse:     got void *
   drivers/gpu/drm/kmb/kmb_drv.c:110:31: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected void [noderef] <asn:2> * @@     got void * @@
   drivers/gpu/drm/kmb/kmb_drv.c:110:31: sparse:     expected void [noderef] <asn:2> *
   drivers/gpu/drm/kmb/kmb_drv.c:110:31: sparse:     got void *

vim +99 drivers/gpu/drm/kmb/kmb_drv.c

    89	
    90	static void __iomem *kmb_map_mmio(struct platform_device *pdev, char *name)
    91	{
    92		struct resource *res;
    93		u32 size;
    94		void __iomem *mem;
    95	
    96		res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
    97		if (!res) {
    98			DRM_ERROR("failed to get resource for %s\n", name);
  > 99			return ERR_PTR(-ENOMEM);
   100		}
   101		size = resource_size(res);
   102		if (!request_mem_region(res->start, size, name)) {
   103			DRM_ERROR("failed to reserve %s registers\n", name);
   104			return ERR_PTR(-ENOMEM);
   105		}
   106		mem = ioremap_nocache(res->start, size);
   107		if (!mem) {
   108			DRM_ERROR("failed to ioremap %s registers\n", name);
   109			release_mem_region(res->start, size);
   110			return ERR_PTR(-ENOMEM);
   111		}
   112		return mem;
   113	}
   114	

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

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