[drm-misc:drm-misc-next 2/3] drivers/gpu/drm/loongson/lsdc_benchmark.c:27:35: sparse: sparse: incorrect type in argument 1 (different address spaces)

[kernel test robot]

tree:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
head:   8d1077cf2e43b15fefd76ebec2b71541eb27ef2c
commit: f39db26c54281da6a785259498ca74b5e470476f [2/3] drm: Add kms driver for 
loongson display controller
config: i386-randconfig-i063-20230710 
(https://download.01.org/0day-ci/archive/20230710/202307100243.v3hv6aes-...@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce: 
(https://download.01.org/0day-ci/archive/20230710/202307100243.v3hv6aes-...@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <l...@intel.com>
| Closes: 
https://lore.kernel.org/oe-kbuild-all/202307100243.v3hv6aes-...@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/loongson/lsdc_benchmark.c:27:35: sparse: sparse: incorrect 
>> type in argument 1 (different address spaces) @@     expected void volatile 
>> [noderef] __iomem * @@     got void *kptr @@
   drivers/gpu/drm/loongson/lsdc_benchmark.c:27:35: sparse:     expected void 
volatile [noderef] __iomem *
   drivers/gpu/drm/loongson/lsdc_benchmark.c:27:35: sparse:     got void *kptr
>> drivers/gpu/drm/loongson/lsdc_benchmark.c:42:51: sparse: sparse: incorrect 
>> type in argument 2 (different address spaces) @@     expected void const 
>> volatile [noderef] __iomem * @@     got void *kptr @@
   drivers/gpu/drm/loongson/lsdc_benchmark.c:42:51: sparse:     expected void 
const volatile [noderef] __iomem *
   drivers/gpu/drm/loongson/lsdc_benchmark.c:42:51: sparse:     got void *kptr

vim +27 drivers/gpu/drm/loongson/lsdc_benchmark.c

    12  
    13  typedef void (*lsdc_copy_proc_t)(struct lsdc_bo *src_bo,
    14                                   struct lsdc_bo *dst_bo,
    15                                   unsigned int size,
    16                                   int n);
    17  
    18  static void lsdc_copy_gtt_to_vram_cpu(struct lsdc_bo *src_bo,
    19                                        struct lsdc_bo *dst_bo,
    20                                        unsigned int size,
    21                                        int n)
    22  {
    23          lsdc_bo_kmap(src_bo);
    24          lsdc_bo_kmap(dst_bo);
    25  
    26          while (n--)
  > 27                  memcpy_toio(dst_bo->kptr, src_bo->kptr, size);
    28  
    29          lsdc_bo_kunmap(src_bo);
    30          lsdc_bo_kunmap(dst_bo);
    31  }
    32  
    33  static void lsdc_copy_vram_to_gtt_cpu(struct lsdc_bo *src_bo,
    34                                        struct lsdc_bo *dst_bo,
    35                                        unsigned int size,
    36                                        int n)
    37  {
    38          lsdc_bo_kmap(src_bo);
    39          lsdc_bo_kmap(dst_bo);
    40  
    41          while (n--)
  > 42                  memcpy_fromio(dst_bo->kptr, src_bo->kptr, size);
    43  
    44          lsdc_bo_kunmap(src_bo);
    45          lsdc_bo_kunmap(dst_bo);
    46  }
    47  

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