Hi Flora,

FYI, the error/warning still remains.

tree:   git://people.freedesktop.org/~agd5f/linux.git amd-19.50
head:   02692309efa6ad48d47894e40fcb3832ace49c4c
commit: a54762aadc4f9bc23849aa01cac1ed8ad158ca3a [2121/2687] drm/amdkcl: refactor drm_fb_helper_remove_conflicting_pci_framebuffers() check
config: i386-allyesconfig (attached as .config)
compiler: gcc-7 (Debian 7.5.0-3) 7.5.0
reproduce:
        git checkout a54762aadc4f9bc23849aa01cac1ed8ad158ca3a
        # save the attached .config to linux build tree
        make ARCH=i386 

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

All errors (new ones prefixed by >>):

   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
>> include/kcl/kcl_drm.h:104:1: error: redefinition of 'drm_fb_helper_remove_conflicting_pci_framebuffers'
    drm_fb_helper_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/kcl/kcl_drm.h:7:0,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_fb_helper.h:612:1: note: previous definition of 'drm_fb_helper_remove_conflicting_pci_framebuffers' was here
    drm_fb_helper_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: In function 'kcl_drm_encoder_init':
   include/kcl/kcl_drm.h:202:9: error: too few arguments to function 'drm_encoder_init'
     return drm_encoder_init(dev, encoder, funcs,
            ^~~~~~~~~~~~~~~~
   In file included from include/drm/drm_modeset_helper_vtables.h:33:0,
                    from include/drm/drm_atomic_helper.h:32,
                    from include/kcl/kcl_drm.h:10,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_encoder.h:183:5: note: declared here
    int drm_encoder_init(struct drm_device *dev,
        ^~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: In function 'kcl_drm_crtc_init_with_planes':
   include/kcl/kcl_drm.h:217:10: error: too few arguments to function 'drm_crtc_init_with_planes'
      return drm_crtc_init_with_planes(dev, crtc, primary,
             ^~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/drm/drmP.h:68:0,
                    from include/kcl/kcl_drm.h:6,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_crtc.h:1120:5: note: declared here
    int drm_crtc_init_with_planes(struct drm_device *dev,
        ^~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: In function 'kcl_drm_universal_plane_init':
   include/kcl/kcl_drm.h:238:29: error: incompatible type for argument 7 of 'drm_universal_plane_init'
         formats, format_count, type);
                                ^~~~
   In file included from include/drm/drm_crtc.h:45:0,
                    from include/drm/drmP.h:68,
                    from include/kcl/kcl_drm.h:6,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_plane.h:713:5: note: expected 'const uint64_t * {aka const long long unsigned int *}' but argument is of type 'enum drm_plane_type'
    int drm_universal_plane_init(struct drm_device *dev,
        ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h:237:10: error: too few arguments to function 'drm_universal_plane_init'
      return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
             ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/drm/drm_crtc.h:45:0,
                    from include/drm/drmP.h:68,
                    from include/kcl/kcl_drm.h:6,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_plane.h:713:5: note: declared here
    int drm_universal_plane_init(struct drm_device *dev,
        ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: In function 'kcl_drm_gem_object_lookup':
   include/kcl/kcl_drm.h:249:32: error: passing argument 1 of 'drm_gem_object_lookup' from incompatible pointer type [-Werror=incompatible-pointer-types]
      return drm_gem_object_lookup(dev, filp, handle);
                                   ^~~
   In file included from include/kcl/kcl_drm.h:9:0,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_gem.h:386:24: note: expected 'struct drm_file *' but argument is of type 'struct drm_device *'
    struct drm_gem_object *drm_gem_object_lookup(struct drm_file *filp, u32 handle);
                           ^~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h:249:37: warning: passing argument 2 of 'drm_gem_object_lookup' makes integer from pointer without a cast [-Wint-conversion]
      return drm_gem_object_lookup(dev, filp, handle);
                                        ^~~~
   In file included from include/kcl/kcl_drm.h:9:0,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_gem.h:386:24: note: expected 'u32 {aka unsigned int}' but argument is of type 'struct drm_file *'
    struct drm_gem_object *drm_gem_object_lookup(struct drm_file *filp, u32 handle);
                           ^~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h:249:10: error: too many arguments to function 'drm_gem_object_lookup'
      return drm_gem_object_lookup(dev, filp, handle);
             ^~~~~~~~~~~~~~~~~~~~~
   In file included from include/kcl/kcl_drm.h:9:0,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_gem.h:386:24: note: declared here
    struct drm_gem_object *drm_gem_object_lookup(struct drm_file *filp, u32 handle);
                           ^~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: At top level:
   include/kcl/kcl_drm.h:258:8: error: redefinition of 'struct drm_format_name_buf'
--
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
>> include/kcl/kcl_drm.h:104:1: error: redefinition of 'drm_fb_helper_remove_conflicting_pci_framebuffers'
    drm_fb_helper_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/kcl/kcl_drm.h:7:0,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_fb_helper.h:612:1: note: previous definition of 'drm_fb_helper_remove_conflicting_pci_framebuffers' was here
    drm_fb_helper_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: In function 'kcl_drm_encoder_init':
   include/kcl/kcl_drm.h:202:9: error: too few arguments to function 'drm_encoder_init'
     return drm_encoder_init(dev, encoder, funcs,
            ^~~~~~~~~~~~~~~~
   In file included from include/drm/drm_modeset_helper_vtables.h:33:0,
                    from include/drm/drm_atomic_helper.h:32,
                    from include/kcl/kcl_drm.h:10,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_encoder.h:183:5: note: declared here
    int drm_encoder_init(struct drm_device *dev,
        ^~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: In function 'kcl_drm_crtc_init_with_planes':
   include/kcl/kcl_drm.h:217:10: error: too few arguments to function 'drm_crtc_init_with_planes'
      return drm_crtc_init_with_planes(dev, crtc, primary,
             ^~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/drm/drmP.h:68:0,
                    from include/kcl/kcl_drm.h:6,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_crtc.h:1120:5: note: declared here
    int drm_crtc_init_with_planes(struct drm_device *dev,
        ^~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: In function 'kcl_drm_universal_plane_init':
   include/kcl/kcl_drm.h:238:29: error: incompatible type for argument 7 of 'drm_universal_plane_init'
         formats, format_count, type);
                                ^~~~
   In file included from include/drm/drm_crtc.h:45:0,
                    from include/drm/drmP.h:68,
                    from include/kcl/kcl_drm.h:6,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_plane.h:713:5: note: expected 'const uint64_t * {aka const long long unsigned int *}' but argument is of type 'enum drm_plane_type'
    int drm_universal_plane_init(struct drm_device *dev,
        ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h:237:10: error: too few arguments to function 'drm_universal_plane_init'
      return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
             ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/drm/drm_crtc.h:45:0,
                    from include/drm/drmP.h:68,
                    from include/kcl/kcl_drm.h:6,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_plane.h:713:5: note: declared here
    int drm_universal_plane_init(struct drm_device *dev,
        ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: In function 'kcl_drm_gem_object_lookup':
   include/kcl/kcl_drm.h:249:32: error: passing argument 1 of 'drm_gem_object_lookup' from incompatible pointer type [-Werror=incompatible-pointer-types]
      return drm_gem_object_lookup(dev, filp, handle);
                                   ^~~
   In file included from include/kcl/kcl_drm.h:9:0,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_gem.h:386:24: note: expected 'struct drm_file *' but argument is of type 'struct drm_device *'
    struct drm_gem_object *drm_gem_object_lookup(struct drm_file *filp, u32 handle);
                           ^~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h:249:37: warning: passing argument 2 of 'drm_gem_object_lookup' makes integer from pointer without a cast [-Wint-conversion]
      return drm_gem_object_lookup(dev, filp, handle);
                                        ^~~~
   In file included from include/kcl/kcl_drm.h:9:0,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_gem.h:386:24: note: expected 'u32 {aka unsigned int}' but argument is of type 'struct drm_file *'
    struct drm_gem_object *drm_gem_object_lookup(struct drm_file *filp, u32 handle);
                           ^~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h:249:10: error: too many arguments to function 'drm_gem_object_lookup'
      return drm_gem_object_lookup(dev, filp, handle);
             ^~~~~~~~~~~~~~~~~~~~~
   In file included from include/kcl/kcl_drm.h:9:0,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_gem.h:386:24: note: declared here
    struct drm_gem_object *drm_gem_object_lookup(struct drm_file *filp, u32 handle);
                           ^~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: At top level:
   include/kcl/kcl_drm.h:258:8: error: redefinition of 'struct drm_format_name_buf'
--
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
>> include/kcl/kcl_drm.h:104:1: error: redefinition of 'drm_fb_helper_remove_conflicting_pci_framebuffers'
    drm_fb_helper_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/kcl/kcl_drm.h:7:0,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_fb_helper.h:612:1: note: previous definition of 'drm_fb_helper_remove_conflicting_pci_framebuffers' was here
    drm_fb_helper_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: In function 'kcl_drm_encoder_init':
   include/kcl/kcl_drm.h:202:9: error: too few arguments to function 'drm_encoder_init'
     return drm_encoder_init(dev, encoder, funcs,
            ^~~~~~~~~~~~~~~~
   In file included from include/drm/drm_modeset_helper_vtables.h:33:0,
                    from include/drm/drm_atomic_helper.h:32,
                    from include/kcl/kcl_drm.h:10,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_encoder.h:183:5: note: declared here
    int drm_encoder_init(struct drm_device *dev,
        ^~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: In function 'kcl_drm_crtc_init_with_planes':
   include/kcl/kcl_drm.h:217:10: error: too few arguments to function 'drm_crtc_init_with_planes'
      return drm_crtc_init_with_planes(dev, crtc, primary,
             ^~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/drm/drmP.h:68:0,
                    from include/kcl/kcl_drm.h:6,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_crtc.h:1120:5: note: declared here
    int drm_crtc_init_with_planes(struct drm_device *dev,
        ^~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: In function 'kcl_drm_universal_plane_init':
   include/kcl/kcl_drm.h:238:29: error: incompatible type for argument 7 of 'drm_universal_plane_init'
         formats, format_count, type);
                                ^~~~
   In file included from include/drm/drm_crtc.h:45:0,
                    from include/drm/drmP.h:68,
                    from include/kcl/kcl_drm.h:6,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_plane.h:713:5: note: expected 'const uint64_t * {aka const long long unsigned int *}' but argument is of type 'enum drm_plane_type'
    int drm_universal_plane_init(struct drm_device *dev,
        ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h:237:10: error: too few arguments to function 'drm_universal_plane_init'
      return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
             ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/drm/drm_crtc.h:45:0,
                    from include/drm/drmP.h:68,
                    from include/kcl/kcl_drm.h:6,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_plane.h:713:5: note: declared here
    int drm_universal_plane_init(struct drm_device *dev,
        ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: In function 'kcl_drm_gem_object_lookup':
   include/kcl/kcl_drm.h:249:32: error: passing argument 1 of 'drm_gem_object_lookup' from incompatible pointer type [-Werror=incompatible-pointer-types]
      return drm_gem_object_lookup(dev, filp, handle);
                                   ^~~
   In file included from include/kcl/kcl_drm.h:9:0,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_gem.h:386:24: note: expected 'struct drm_file *' but argument is of type 'struct drm_device *'
    struct drm_gem_object *drm_gem_object_lookup(struct drm_file *filp, u32 handle);
                           ^~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h:249:37: warning: passing argument 2 of 'drm_gem_object_lookup' makes integer from pointer without a cast [-Wint-conversion]
      return drm_gem_object_lookup(dev, filp, handle);
                                        ^~~~
   In file included from include/kcl/kcl_drm.h:9:0,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_gem.h:386:24: note: expected 'u32 {aka unsigned int}' but argument is of type 'struct drm_file *'
    struct drm_gem_object *drm_gem_object_lookup(struct drm_file *filp, u32 handle);
                           ^~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h:249:10: error: too many arguments to function 'drm_gem_object_lookup'
      return drm_gem_object_lookup(dev, filp, handle);
             ^~~~~~~~~~~~~~~~~~~~~
   In file included from include/kcl/kcl_drm.h:9:0,
                    from drivers/gpu/drm/ttm/backport/backport.h:6,
                    from <command-line>:0:
   include/drm/drm_gem.h:386:24: note: declared here
    struct drm_gem_object *drm_gem_object_lookup(struct drm_file *filp, u32 handle);
                           ^~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/ttm/backport/backport.h:6:0,
                    from <command-line>:0:
   include/kcl/kcl_drm.h: At top level:
   include/kcl/kcl_drm.h:258:8: error: redefinition of 'struct drm_format_name_buf'
..

vim +/drm_fb_helper_remove_conflicting_pci_framebuffers +104 include/kcl/kcl_drm.h

    97	
    98	#define IS_REACHABLE(option) __or(IS_BUILTIN(option), \
    99					__and(IS_MODULE(option), __is_defined(MODULE)))
   100	#endif
   101	extern int remove_conflicting_pci_framebuffers(struct pci_dev *pdev, int res_id,
   102						       const char *name);
   103	static inline int
 > 104	drm_fb_helper_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
   105							  int resource_id,
   106							  const char *name)
   107	{
   108	#if IS_REACHABLE(CONFIG_FB)
   109		return remove_conflicting_pci_framebuffers(pdev, resource_id, name);
   110	#else
   111		return 0;
   112	#endif
   113	}
   114	#endif
   115	

---
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