Hi Yu,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.20-rc7]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Yu-Zhao/drm-amd-fix-race-in-page-flip-job/20181222-072937
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 8.1.0
reproduce:
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=ia64 

All warnings (new ones prefixed by >>):

   In file included from include/linux/cdev.h:8,
                    from include/drm/drmP.h:36,
                    from drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:26:
   drivers/gpu/drm/amd/amdgpu/amdgpu_display.c: In function 
'amdgpu_display_user_framebuffer_create':
>> drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:556:28: warning: format '%d' 
>> expects argument of type 'int', but argument 4 has type 'size_t' {aka 'long 
>> unsigned int'} [-Wformat=]
      dev_err(&dev->pdev->dev, "Invalid GEM size: expecting %d but got %d\n",
                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/device.h:1370:22: note: in definition of macro 'dev_fmt'
    #define dev_fmt(fmt) fmt
                         ^~~
   drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:556:3: note: in expansion of 
macro 'dev_err'
      dev_err(&dev->pdev->dev, "Invalid GEM size: expecting %d but got %d\n",
      ^~~~~~~

vim +556 drivers/gpu/drm/amd/amdgpu/amdgpu_display.c

   521  
   522  struct drm_framebuffer *
   523  amdgpu_display_user_framebuffer_create(struct drm_device *dev,
   524                                         struct drm_file *file_priv,
   525                                         const struct drm_mode_fb_cmd2 
*mode_cmd)
   526  {
   527          struct drm_gem_object *obj;
   528          struct amdgpu_framebuffer *amdgpu_fb;
   529          int ret;
   530          int height;
   531          struct amdgpu_device *adev = dev->dev_private;
   532          int cpp = drm_format_plane_cpp(mode_cmd->pixel_format, 0);
   533          int pitch = amdgpu_align_pitch(adev, mode_cmd->width, cpp, 
false);
   534  
   535          if (mode_cmd->pitches[0] != pitch) {
   536                  dev_err(&dev->pdev->dev, "Invalid pitch: expecting %d 
but got %d\n",
   537                          pitch, mode_cmd->pitches[0]);
   538                  return ERR_PTR(-EINVAL);
   539          }
   540  
   541          obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
   542          if (obj ==  NULL) {
   543                  dev_err(&dev->pdev->dev, "No GEM object associated to 
handle 0x%08X, "
   544                          "can't create framebuffer\n", 
mode_cmd->handles[0]);
   545                  return ERR_PTR(-ENOENT);
   546          }
   547  
   548          /* Handle is imported dma-buf, so cannot be migrated to VRAM 
for scanout */
   549          if (obj->import_attach) {
   550                  DRM_DEBUG_KMS("Cannot create framebuffer from imported 
dma_buf\n");
   551                  return ERR_PTR(-EINVAL);
   552          }
   553  
   554          height = ALIGN(mode_cmd->height, 8);
   555          if (obj->size < pitch * height) {
 > 556                  dev_err(&dev->pdev->dev, "Invalid GEM size: expecting 
 > %d but got %d\n",
   557                          pitch * height, obj->size);
   558                  return ERR_PTR(-EINVAL);
   559          }
   560  
   561          amdgpu_fb = kzalloc(sizeof(*amdgpu_fb), GFP_KERNEL);
   562          if (amdgpu_fb == NULL) {
   563                  drm_gem_object_put_unlocked(obj);
   564                  return ERR_PTR(-ENOMEM);
   565          }
   566  
   567          ret = amdgpu_display_framebuffer_init(dev, amdgpu_fb, mode_cmd, 
obj);
   568          if (ret) {
   569                  kfree(amdgpu_fb);
   570                  drm_gem_object_put_unlocked(obj);
   571                  return ERR_PTR(ret);
   572          }
   573  
   574          return &amdgpu_fb->base;
   575  }
   576  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Attachment: .config.gz
Description: application/gzip

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