tree:   git://anongit.freedesktop.org/drm/drm-intel for-linux-next
head:   1c8ee8b92fb6ac9d5975147cc902e8c142eca338
commit: 84eac0c65940d9633247b0c8c826d4bcb7307351 [4/5] drm/i915/gt: Force pte cacheline to main memory
config: x86_64-randconfig-a011-20200511 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 68a9356bdea69dbcec1233f8b1fab47e72fca991)
reproduce:
        git checkout 84eac0c65940d9633247b0c8c826d4bcb7307351
        # save the attached .config to linux build tree
        make ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/i915/gt/gen8_ppgtt.c:392:24: warning: duplicate 'inline' declaration specifier [-Wduplicate-decl-specifier]
   static __always_inline inline void
                          ^
   include/linux/compiler_types.h:138:16: note: expanded from macro 'inline'
   #define inline inline __gnu_inline __inline_maybe_unused notrace
                  ^
   1 warning generated.

vim +/inline +392 drivers/gpu/drm/i915/gt/gen8_ppgtt.c

   391	
 > 392	static __always_inline inline void
   393	write_pte(gen8_pte_t *pte, const gen8_pte_t val)
   394	{
   395		/* Magic delays? Or can we refine these to flush all in one pass? */
   396		*pte = val;
   397		wmb(); /* cpu to cache */
   398		clflush(pte); /* cache to memory */
   399		wmb(); /* visible to all */
   400	}
   401	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org