[PATCH 22/22] drm: ensure drm headers are self-contained and pass kernel-doc

kernel test robot lkp at intel.com
Thu Mar 7 05:28:38 UTC 2024


Hi Jani,

kernel test robot noticed the following build errors:

[auto build test ERROR on drm-misc/drm-misc-next]
[cannot apply to drm/drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes linus/master v6.8-rc7 next-20240306]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/drm-crtc-make-drm_crtc_internal-h-self-contained/20240307-023603
base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link:    https://lore.kernel.org/r/e22ab28836ee1689ea4781ed53fd2e4e4f84728e.1709749576.git.jani.nikula%40intel.com
patch subject: [PATCH 22/22] drm: ensure drm headers are self-contained and pass kernel-doc
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20240307/202403071317.uoW18ZR3-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240307/202403071317.uoW18ZR3-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 <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403071317.uoW18ZR3-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   In file included from include/asm-generic/pgtable-nopud.h:7,
                    from arch/m68k/include/asm/pgtable_mm.h:9,
                    from arch/m68k/include/asm/pgtable.h:8,
                    from include/linux/pgtable.h:6,
                    from include/drm/ttm/ttm_caching.h:28,
                    from <command-line>:
>> include/asm-generic/pgtable-nop4d.h:9:18: error: unknown type name 'pgd_t'
       9 | typedef struct { pgd_t pgd; } p4d_t;
         |                  ^~~~~
   include/asm-generic/pgtable-nop4d.h:21:28: error: unknown type name 'pgd_t'; did you mean 'p4d_t'?
      21 | static inline int pgd_none(pgd_t pgd)           { return 0; }
         |                            ^~~~~
         |                            p4d_t
   include/asm-generic/pgtable-nop4d.h:22:27: error: unknown type name 'pgd_t'; did you mean 'p4d_t'?
      22 | static inline int pgd_bad(pgd_t pgd)            { return 0; }
         |                           ^~~~~
         |                           p4d_t
   include/asm-generic/pgtable-nop4d.h:23:31: error: unknown type name 'pgd_t'; did you mean 'p4d_t'?
      23 | static inline int pgd_present(pgd_t pgd)        { return 1; }
         |                               ^~~~~
         |                               p4d_t
   include/asm-generic/pgtable-nop4d.h:24:30: error: unknown type name 'pgd_t'; did you mean 'p4d_t'?
      24 | static inline void pgd_clear(pgd_t *pgd)        { }
         |                              ^~~~~
         |                              p4d_t
   include/asm-generic/pgtable-nop4d.h:35:33: error: unknown type name 'pgd_t'; did you mean 'p4d_t'?
      35 | static inline p4d_t *p4d_offset(pgd_t *pgd, unsigned long address)
         |                                 ^~~~~
         |                                 p4d_t
   In file included from arch/m68k/include/asm/thread_info.h:6,
                    from include/linux/thread_info.h:60,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/m68k/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:79,
                    from arch/m68k/include/asm/processor.h:11,
                    from arch/m68k/include/asm/pgtable_mm.h:15:
   arch/m68k/include/asm/motorola_pgtable.h: In function 'pud_set':
>> arch/m68k/include/asm/page.h:46:29: error: request for member 'pgd' in something not a structure or union
      46 | #define pgd_val(x)      ((x).pgd)
         |                             ^
   include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
      40 | #define p4d_val(x)                              (pgd_val((x).pgd))
         |                                                  ^~~~~~~
   include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
      48 | #define pud_val(x)                              (p4d_val((x).p4d))
         |                                                  ^~~~~~~
   arch/m68k/include/asm/motorola_pgtable.h:103:9: note: in expansion of macro 'pud_val'
     103 |         pud_val(*pudp) = _PAGE_TABLE | _PAGE_ACCESSED | __pa(pmdp);
         |         ^~~~~~~
   include/linux/pgtable.h: In function 'pmd_offset':
>> arch/m68k/include/asm/page.h:46:29: error: request for member 'pgd' in something not a structure or union
      46 | #define pgd_val(x)      ((x).pgd)
         |                             ^
   include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
      40 | #define p4d_val(x)                              (pgd_val((x).pgd))
         |                                                  ^~~~~~~
   include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
      48 | #define pud_val(x)                              (p4d_val((x).p4d))
         |                                                  ^~~~~~~
   arch/m68k/include/asm/motorola_pgtable.h:108:41: note: in expansion of macro 'pud_val'
     108 | #define pud_pgtable(pud) ((pmd_t *)__va(pud_val(pud) & _TABLE_MASK))
         |                                         ^~~~~~~
   include/linux/pgtable.h:123:16: note: in expansion of macro 'pud_pgtable'
     123 |         return pud_pgtable(*pud) + pmd_index(address);
         |                ^~~~~~~~~~~
   include/linux/pgtable.h: In function 'pmd_off':
>> include/linux/pgtable.h:165:38: error: implicit declaration of function 'p4d_offset'; did you mean 'pmd_offset'? [-Werror=implicit-function-declaration]
     165 |         return pmd_offset(pud_offset(p4d_offset(pgd_offset(mm, va), va), va), va);
         |                                      ^~~~~~~~~~
         |                                      pmd_offset
>> include/linux/pgtable.h:165:38: warning: passing argument 1 of 'pud_offset' makes pointer from integer without a cast [-Wint-conversion]
     165 |         return pmd_offset(pud_offset(p4d_offset(pgd_offset(mm, va), va), va), va);
         |                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         |                                      |
         |                                      int
   include/asm-generic/pgtable-nopud.h:42:40: note: expected 'p4d_t *' but argument is of type 'int'
      42 | static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address)
         |                                 ~~~~~~~^~~
   include/linux/pgtable.h: In function 'pmd_off_k':
   include/linux/pgtable.h:170:38: warning: passing argument 1 of 'pud_offset' makes pointer from integer without a cast [-Wint-conversion]
     170 |         return pmd_offset(pud_offset(p4d_offset(pgd_offset_k(va), va), va), va);
         |                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         |                                      |
         |                                      int
   include/asm-generic/pgtable-nopud.h:42:40: note: expected 'p4d_t *' but argument is of type 'int'
      42 | static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address)
         |                                 ~~~~~~~^~~
   include/linux/pgtable.h: In function 'pud_same':
>> arch/m68k/include/asm/page.h:46:29: error: request for member 'pgd' in something not a structure or union
      46 | #define pgd_val(x)      ((x).pgd)
         |                             ^
   include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
      40 | #define p4d_val(x)                              (pgd_val((x).pgd))
         |                                                  ^~~~~~~
   include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
      48 | #define pud_val(x)                              (p4d_val((x).p4d))
         |                                                  ^~~~~~~
   include/linux/pgtable.h:829:16: note: in expansion of macro 'pud_val'
     829 |         return pud_val(pud_a) == pud_val(pud_b);
         |                ^~~~~~~
>> arch/m68k/include/asm/page.h:46:29: error: request for member 'pgd' in something not a structure or union
      46 | #define pgd_val(x)      ((x).pgd)
         |                             ^
   include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
      40 | #define p4d_val(x)                              (pgd_val((x).pgd))
         |                                                  ^~~~~~~
   include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
      48 | #define pud_val(x)                              (p4d_val((x).p4d))
         |                                                  ^~~~~~~
   include/linux/pgtable.h:829:34: note: in expansion of macro 'pud_val'
     829 |         return pud_val(pud_a) == pud_val(pud_b);
         |                                  ^~~~~~~
>> include/linux/pgtable.h:827:34: warning: parameter 'pud_a' set but not used [-Wunused-but-set-parameter]
     827 | static inline int pud_same(pud_t pud_a, pud_t pud_b)
         |                            ~~~~~~^~~~~
>> include/linux/pgtable.h:827:47: warning: parameter 'pud_b' set but not used [-Wunused-but-set-parameter]
     827 | static inline int pud_same(pud_t pud_a, pud_t pud_b)
         |                                         ~~~~~~^~~~~
   include/linux/pgtable.h: In function 'p4d_same':
>> arch/m68k/include/asm/page.h:46:29: error: request for member 'pgd' in something not a structure or union
      46 | #define pgd_val(x)      ((x).pgd)
         |                             ^
   include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
      40 | #define p4d_val(x)                              (pgd_val((x).pgd))
         |                                                  ^~~~~~~
   include/linux/pgtable.h:837:16: note: in expansion of macro 'p4d_val'
     837 |         return p4d_val(p4d_a) == p4d_val(p4d_b);
         |                ^~~~~~~
>> arch/m68k/include/asm/page.h:46:29: error: request for member 'pgd' in something not a structure or union
      46 | #define pgd_val(x)      ((x).pgd)
         |                             ^
   include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
      40 | #define p4d_val(x)                              (pgd_val((x).pgd))
         |                                                  ^~~~~~~
   include/linux/pgtable.h:837:34: note: in expansion of macro 'p4d_val'
     837 |         return p4d_val(p4d_a) == p4d_val(p4d_b);
         |                                  ^~~~~~~
>> include/linux/pgtable.h:835:34: warning: parameter 'p4d_a' set but not used [-Wunused-but-set-parameter]
     835 | static inline int p4d_same(p4d_t p4d_a, p4d_t p4d_b)
         |                            ~~~~~~^~~~~
>> include/linux/pgtable.h:835:47: warning: parameter 'p4d_b' set but not used [-Wunused-but-set-parameter]
     835 | static inline int p4d_same(p4d_t p4d_a, p4d_t p4d_b)
         |                                         ~~~~~~^~~~~
   include/linux/pgtable.h: In function 'pgd_none_or_clear_bad':
>> include/linux/pgtable.h:1021:13: error: implicit declaration of function 'pgd_none'; did you mean 'p4d_none'? [-Werror=implicit-function-declaration]
    1021 |         if (pgd_none(*pgd))
         |             ^~~~~~~~
         |             p4d_none
   In file included from include/linux/export.h:5,
                    from include/linux/linkage.h:7,
                    from include/linux/preempt.h:10:
>> include/linux/pgtable.h:1023:22: error: implicit declaration of function 'pgd_bad'; did you mean 'p4d_bad'? [-Werror=implicit-function-declaration]
    1023 |         if (unlikely(pgd_bad(*pgd))) {
         |                      ^~~~~~~
   include/linux/compiler.h:77:45: note: in definition of macro 'unlikely'
      77 | # define unlikely(x)    __builtin_expect(!!(x), 0)
         |                                             ^
   include/linux/pgtable.h: In function 'pud_none_or_clear_bad':
>> arch/m68k/include/asm/page.h:46:29: error: request for member 'pgd' in something not a structure or union
      46 | #define pgd_val(x)      ((x).pgd)
         |                             ^
   include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
      40 | #define p4d_val(x)                              (pgd_val((x).pgd))
         |                                                  ^~~~~~~
   include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
      48 | #define pud_val(x)                              (p4d_val((x).p4d))
         |                                                  ^~~~~~~
   arch/m68k/include/asm/motorola_pgtable.h:134:35: note: in expansion of macro 'pud_val'
     134 | #define pud_none(pud)           (!pud_val(pud))
         |                                   ^~~~~~~
   include/linux/pgtable.h:1043:13: note: in expansion of macro 'pud_none'
    1043 |         if (pud_none(*pud))
         |             ^~~~~~~~
>> arch/m68k/include/asm/page.h:46:29: error: request for member 'pgd' in something not a structure or union
      46 | #define pgd_val(x)      ((x).pgd)
         |                             ^
   include/linux/compiler.h:77:45: note: in definition of macro 'unlikely'
      77 | # define unlikely(x)    __builtin_expect(!!(x), 0)
         |                                             ^
   include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
      40 | #define p4d_val(x)                              (pgd_val((x).pgd))
         |                                                  ^~~~~~~
   include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
      48 | #define pud_val(x)                              (p4d_val((x).p4d))
         |                                                  ^~~~~~~
   arch/m68k/include/asm/motorola_pgtable.h:135:35: note: in expansion of macro 'pud_val'
     135 | #define pud_bad(pud)            ((pud_val(pud) & _DESCTYPE_MASK) != _PAGE_TABLE)
         |                                   ^~~~~~~
   include/linux/pgtable.h:1045:22: note: in expansion of macro 'pud_bad'
    1045 |         if (unlikely(pud_bad(*pud))) {
         |                      ^~~~~~~
   cc1: some warnings being treated as errors


vim +/pgd_t +9 include/asm-generic/pgtable-nop4d.h

048456dcf2c56a Kirill A. Shutemov 2017-03-09   8  
048456dcf2c56a Kirill A. Shutemov 2017-03-09  @9  typedef struct { pgd_t pgd; } p4d_t;
048456dcf2c56a Kirill A. Shutemov 2017-03-09  10  

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