linux-kernel - drivers/gpu/drm/loongson/lsdc_benchmark.c:27:35: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Message-ID: <202311150710.PphxDBhJ-lkp@intel.com>
Date:   Wed, 15 Nov 2023 15:57:46 +0800
From:   kernel test robot <yujie.liu@...el.com>
To:     Sui Jingfeng <suijingfeng@...ngson.cn>
CC:     <oe-kbuild-all@...ts.linux.dev>, <linux-kernel@...r.kernel.org>
Subject: drivers/gpu/drm/loongson/lsdc_benchmark.c:27:35: sparse: sparse:
 incorrect type in argument 1 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   9bacdd8996c77c42ca004440be610692275ff9d0
commit: f39db26c54281da6a785259498ca74b5e470476f drm: Add kms driver for loongson display controller
date:   4 months ago
config: powerpc-randconfig-r113-20231106 (https://download.01.org/0day-ci/archive/20231115/202311150710.PphxDBhJ-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231115/202311150710.PphxDBhJ-lkp@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 <yujie.liu@...el.com>
| Closes: https://lore.kernel.org/r/202311150710.PphxDBhJ-lkp@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 *d @@     got void *kptr @@
   drivers/gpu/drm/loongson/lsdc_benchmark.c:27:35: sparse:     expected void volatile [noderef] __iomem *d
   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 *s @@     got void *kptr @@
   drivers/gpu/drm/loongson/lsdc_benchmark.c:42:51: sparse:     expected void const volatile [noderef] __iomem *s
   drivers/gpu/drm/loongson/lsdc_benchmark.c:42:51: sparse:     got void *kptr

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

f39db26c54281d Sui Jingfeng 2023-06-15  12  
f39db26c54281d Sui Jingfeng 2023-06-15  13  typedef void (*lsdc_copy_proc_t)(struct lsdc_bo *src_bo,
f39db26c54281d Sui Jingfeng 2023-06-15  14  				 struct lsdc_bo *dst_bo,
f39db26c54281d Sui Jingfeng 2023-06-15  15  				 unsigned int size,
f39db26c54281d Sui Jingfeng 2023-06-15  16  				 int n);
f39db26c54281d Sui Jingfeng 2023-06-15  17  
f39db26c54281d Sui Jingfeng 2023-06-15  18  static void lsdc_copy_gtt_to_vram_cpu(struct lsdc_bo *src_bo,
f39db26c54281d Sui Jingfeng 2023-06-15  19  				      struct lsdc_bo *dst_bo,
f39db26c54281d Sui Jingfeng 2023-06-15  20  				      unsigned int size,
f39db26c54281d Sui Jingfeng 2023-06-15  21  				      int n)
f39db26c54281d Sui Jingfeng 2023-06-15  22  {
f39db26c54281d Sui Jingfeng 2023-06-15  23  	lsdc_bo_kmap(src_bo);
f39db26c54281d Sui Jingfeng 2023-06-15  24  	lsdc_bo_kmap(dst_bo);
f39db26c54281d Sui Jingfeng 2023-06-15  25  
f39db26c54281d Sui Jingfeng 2023-06-15  26  	while (n--)
f39db26c54281d Sui Jingfeng 2023-06-15 @27  		memcpy_toio(dst_bo->kptr, src_bo->kptr, size);
f39db26c54281d Sui Jingfeng 2023-06-15  28  
f39db26c54281d Sui Jingfeng 2023-06-15  29  	lsdc_bo_kunmap(src_bo);
f39db26c54281d Sui Jingfeng 2023-06-15  30  	lsdc_bo_kunmap(dst_bo);
f39db26c54281d Sui Jingfeng 2023-06-15  31  }
f39db26c54281d Sui Jingfeng 2023-06-15  32  
f39db26c54281d Sui Jingfeng 2023-06-15  33  static void lsdc_copy_vram_to_gtt_cpu(struct lsdc_bo *src_bo,
f39db26c54281d Sui Jingfeng 2023-06-15  34  				      struct lsdc_bo *dst_bo,
f39db26c54281d Sui Jingfeng 2023-06-15  35  				      unsigned int size,
f39db26c54281d Sui Jingfeng 2023-06-15  36  				      int n)
f39db26c54281d Sui Jingfeng 2023-06-15  37  {
f39db26c54281d Sui Jingfeng 2023-06-15  38  	lsdc_bo_kmap(src_bo);
f39db26c54281d Sui Jingfeng 2023-06-15  39  	lsdc_bo_kmap(dst_bo);
f39db26c54281d Sui Jingfeng 2023-06-15  40  
f39db26c54281d Sui Jingfeng 2023-06-15  41  	while (n--)
f39db26c54281d Sui Jingfeng 2023-06-15 @42  		memcpy_fromio(dst_bo->kptr, src_bo->kptr, size);
f39db26c54281d Sui Jingfeng 2023-06-15  43  
f39db26c54281d Sui Jingfeng 2023-06-15  44  	lsdc_bo_kunmap(src_bo);
f39db26c54281d Sui Jingfeng 2023-06-15  45  	lsdc_bo_kunmap(dst_bo);
f39db26c54281d Sui Jingfeng 2023-06-15  46  }
f39db26c54281d Sui Jingfeng 2023-06-15  47  

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