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* [radeon-alex:drm-next-4.20-wip 99/258] include/asm-generic/div64.h:239:22: error: passing argument 1 of '__div64_32' from incompatible pointer type
@ 2018-09-04 15:57 kbuild test robot
  0 siblings, 0 replies; only message in thread
From: kbuild test robot @ 2018-09-04 15:57 UTC (permalink / raw)
  To: Evan Quan; +Cc: Alex Deucher, kbuild-all, dri-devel

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Hi Evan,

FYI, the error/warning still remains.

tree:   git://people.freedesktop.org/~agd5f/linux.git drm-next-4.20-wip
head:   6abc0c8f8cf3e0c47707b01f027f9f9b9aa75646
commit: d617d4d73043bc4cbc316a7a1b4370fa5bc26a31 [99/258] drm/amd/powerplay: new interfaces for overdrive vega20 sclk and mclk
config: microblaze-allyesconfig (attached as .config)
compiler: microblaze-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
        git checkout d617d4d73043bc4cbc316a7a1b4370fa5bc26a31
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=microblaze 
:::::: branch date: 2 days ago
:::::: commit date: 8 days ago

All errors (new ones prefixed by >>):

   In file included from ./arch/microblaze/include/generated/asm/div64.h:1,
                    from include/linux/kernel.h:207,
                    from include/linux/delay.h:22,
                    from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24:
   drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c: In function 'vega20_set_sclk_od':
   include/asm-generic/div64.h:222:28: warning: comparison of distinct pointer types lacks a cast
     (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \
                               ^~
   drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:1200:2: note: in expansion of macro 'do_div'
     do_div(od_sclk, 100);
     ^~~~~~
   In file included from include/linux/kernel.h:10,
                    from include/linux/delay.h:22,
                    from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24:
   include/asm-generic/div64.h:235:25: warning: right shift count >= width of type [-Wshift-count-overflow]
     } else if (likely(((n) >> 32) == 0)) {  \
                            ^~
   include/linux/compiler.h:76:40: note: in definition of macro 'likely'
    # define likely(x) __builtin_expect(!!(x), 1)
                                           ^
   drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:1200:2: note: in expansion of macro 'do_div'
     do_div(od_sclk, 100);
     ^~~~~~
   In file included from ./arch/microblaze/include/generated/asm/div64.h:1,
                    from include/linux/kernel.h:207,
                    from include/linux/delay.h:22,
                    from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24:
>> include/asm-generic/div64.h:239:22: error: passing argument 1 of '__div64_32' from incompatible pointer type [-Werror=incompatible-pointer-types]
      __rem = __div64_32(&(n), __base); \
                         ^~~~
   drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:1200:2: note: in expansion of macro 'do_div'
     do_div(od_sclk, 100);
     ^~~~~~
   include/asm-generic/div64.h:213:38: note: expected 'uint64_t *' {aka 'long long unsigned int *'} but argument is of type 'uint32_t *' {aka 'unsigned int *'}
    extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor);
                               ~~~~~~~~~~^~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c: In function 'vega20_set_mclk_od':
   include/asm-generic/div64.h:222:28: warning: comparison of distinct pointer types lacks a cast
     (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \
                               ^~
   drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:1247:2: note: in expansion of macro 'do_div'
     do_div(od_mclk, 100);
     ^~~~~~
   In file included from include/linux/kernel.h:10,
                    from include/linux/delay.h:22,
                    from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24:
   include/asm-generic/div64.h:235:25: warning: right shift count >= width of type [-Wshift-count-overflow]
     } else if (likely(((n) >> 32) == 0)) {  \
                            ^~
   include/linux/compiler.h:76:40: note: in definition of macro 'likely'
    # define likely(x) __builtin_expect(!!(x), 1)
                                           ^
   drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:1247:2: note: in expansion of macro 'do_div'
     do_div(od_mclk, 100);
     ^~~~~~
   In file included from ./arch/microblaze/include/generated/asm/div64.h:1,
                    from include/linux/kernel.h:207,
                    from include/linux/delay.h:22,
                    from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24:
>> include/asm-generic/div64.h:239:22: error: passing argument 1 of '__div64_32' from incompatible pointer type [-Werror=incompatible-pointer-types]
      __rem = __div64_32(&(n), __base); \
                         ^~~~
   drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:1247:2: note: in expansion of macro 'do_div'
     do_div(od_mclk, 100);
     ^~~~~~
   include/asm-generic/div64.h:213:38: note: expected 'uint64_t *' {aka 'long long unsigned int *'} but argument is of type 'uint32_t *' {aka 'unsigned int *'}
    extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor);
                               ~~~~~~~~~~^~~~~~~~
   cc1: some warnings being treated as errors

git remote add radeon-alex git://people.freedesktop.org/~agd5f/linux.git
git remote update radeon-alex
git checkout d617d4d73043bc4cbc316a7a1b4370fa5bc26a31
vim +/__div64_32 +239 include/asm-generic/div64.h

^1da177e Linus Torvalds 2005-04-16  215  
^1da177e Linus Torvalds 2005-04-16  216  /* The unnecessary pointer compare is there
^1da177e Linus Torvalds 2005-04-16  217   * to check for type safety (n must be 64bit)
^1da177e Linus Torvalds 2005-04-16  218   */
^1da177e Linus Torvalds 2005-04-16  219  # define do_div(n,base) ({				\
^1da177e Linus Torvalds 2005-04-16  220  	uint32_t __base = (base);			\
^1da177e Linus Torvalds 2005-04-16  221  	uint32_t __rem;					\
^1da177e Linus Torvalds 2005-04-16  222  	(void)(((typeof((n)) *)0) == ((uint64_t *)0));	\
911918aa Nicolas Pitre  2015-11-02  223  	if (__builtin_constant_p(__base) &&		\
911918aa Nicolas Pitre  2015-11-02  224  	    is_power_of_2(__base)) {			\
911918aa Nicolas Pitre  2015-11-02  225  		__rem = (n) & (__base - 1);		\
911918aa Nicolas Pitre  2015-11-02  226  		(n) >>= ilog2(__base);			\
461a5e51 Nicolas Pitre  2015-10-30  227  	} else if (__div64_const32_is_OK &&		\
461a5e51 Nicolas Pitre  2015-10-30  228  		   __builtin_constant_p(__base) &&	\
461a5e51 Nicolas Pitre  2015-10-30  229  		   __base != 0) {			\
461a5e51 Nicolas Pitre  2015-10-30  230  		uint32_t __res_lo, __n_lo = (n);	\
461a5e51 Nicolas Pitre  2015-10-30  231  		(n) = __div64_const32(n, __base);	\
461a5e51 Nicolas Pitre  2015-10-30  232  		/* the remainder can be computed with 32-bit regs */ \
461a5e51 Nicolas Pitre  2015-10-30  233  		__res_lo = (n);				\
461a5e51 Nicolas Pitre  2015-10-30  234  		__rem = __n_lo - __res_lo * __base;	\
911918aa Nicolas Pitre  2015-11-02  235  	} else if (likely(((n) >> 32) == 0)) {		\
^1da177e Linus Torvalds 2005-04-16  236  		__rem = (uint32_t)(n) % __base;		\
^1da177e Linus Torvalds 2005-04-16  237  		(n) = (uint32_t)(n) / __base;		\
^1da177e Linus Torvalds 2005-04-16  238  	} else 						\
^1da177e Linus Torvalds 2005-04-16 @239  		__rem = __div64_32(&(n), __base);	\
^1da177e Linus Torvalds 2005-04-16  240  	__rem;						\
^1da177e Linus Torvalds 2005-04-16  241   })
^1da177e Linus Torvalds 2005-04-16  242  

:::::: The code at line 239 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>

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

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