Re: [PATCH v5 1/5] Consolidate __memcpy_{to,from}io and __memset_io into iomap_copy.c

[kernel test robot <lkp@intel.com>]

Hi Julian,

kernel test robot noticed the following build errors:

[auto build test ERROR on arnd-asm-generic/master]
[also build test ERROR on soc/for-next akpm-mm/mm-nonmm-unstable arm64/for-next/core linus/master v6.11 next-20240924]
[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/Julian-Vetter/Consolidate-__memcpy_-to-from-io-and-__memset_io-into-iomap_copy-c/20240924-202154
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master
patch link:    https://lore.kernel.org/r/20240924121432.798655-2-jvetter%40kalrayinc.com
patch subject: [PATCH v5 1/5] Consolidate __memcpy_{to,from}io and __memset_io into iomap_copy.c
config: arm-defconfig (https://download.01.org/0day-ci/archive/20240925/202409250806.Lq8C7QZr-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240925/202409250806.Lq8C7QZr-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409250806.Lq8C7QZr-lkp@intel.com/

All errors (new ones prefixed by >>):

>> lib/iomap_copy.c:89:19: error: implicit declaration of function 'IS_ALIGNED' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
           while (count && !IS_ALIGNED((unsigned long)from, NATIVE_STORE_SIZE)) {
                            ^
   lib/iomap_copy.c:121:19: error: implicit declaration of function 'IS_ALIGNED' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
           while (count && !IS_ALIGNED((unsigned long)to, NATIVE_STORE_SIZE)) {
                            ^
   lib/iomap_copy.c:161:19: error: implicit declaration of function 'IS_ALIGNED' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
           while (count && !IS_ALIGNED((unsigned long)dst, NATIVE_STORE_SIZE)) {
                            ^
   3 errors generated.


vim +/IS_ALIGNED +89 lib/iomap_copy.c

    84	
    85	
    86	#ifndef __memcpy_fromio
    87	void __memcpy_fromio(void *to, const volatile void __iomem *from, size_t count)
    88	{
  > 89		while (count && !IS_ALIGNED((unsigned long)from, NATIVE_STORE_SIZE)) {
    90			*(u8 *)to = __raw_readb(from);
    91			from++;
    92			to++;
    93			count--;
    94		}
    95	
    96		while (count >= NATIVE_STORE_SIZE) {
    97	#ifdef CONFIG_64BIT
    98				put_unaligned(__raw_readq(from), (uintptr_t *)to);
    99	#else
   100				put_unaligned(__raw_readl(from), (uintptr_t *)to);
   101	#endif
   102	
   103			from += NATIVE_STORE_SIZE;
   104			to += NATIVE_STORE_SIZE;
   105			count -= NATIVE_STORE_SIZE;
   106		}
   107	
   108		while (count) {
   109			*(u8 *)to = __raw_readb(from);
   110			from++;
   111			to++;
   112			count--;
   113		}
   114	}
   115	EXPORT_SYMBOL(__memcpy_fromio);
   116	#endif
   117	

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