Re: [PATCH v4 2/5] Replace generic memcpy and memset by IO memcpy functions

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

Hi Julian,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-nonmm-unstable]
[also build test ERROR on arm64/for-next/core soc/for-next 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-a-single-lib/20240924-172751
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
patch link:    https://lore.kernel.org/r/20240924092223.534040-3-jvetter%40kalrayinc.com
patch subject: [PATCH v4 2/5] Replace generic memcpy and memset by IO memcpy functions
config: openrisc-defconfig (https://download.01.org/0day-ci/archive/20240925/202409250049.WzbuwMDw-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240925/202409250049.WzbuwMDw-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/202409250049.WzbuwMDw-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/openrisc/include/asm/io.h:37,
                    from include/linux/io.h:14,
                    from arch/openrisc/kernel/asm-offsets.c:31:
   include/asm-generic/io.h: In function 'memset_io':
>> include/asm-generic/io.h:1166:9: error: implicit declaration of function '__memset_io'; did you mean 'memset_io'? [-Wimplicit-function-declaration]
    1166 |         __memset_io(__io_virt(addr), value, size);
         |         ^~~~~~~~~~~
         |         memset_io
   include/asm-generic/io.h: In function 'memcpy_fromio':
>> include/asm-generic/io.h:1184:9: error: implicit declaration of function '__memcpy_fromio'; did you mean 'memcpy_fromio'? [-Wimplicit-function-declaration]
    1184 |         __memcpy_fromio(buffer, __io_virt(addr), size);
         |         ^~~~~~~~~~~~~~~
         |         memcpy_fromio
   include/asm-generic/io.h: In function 'memcpy_toio':
>> include/asm-generic/io.h:1201:9: error: implicit declaration of function '__memcpy_toio'; did you mean 'memcpy_toio'? [-Wimplicit-function-declaration]
    1201 |         __memcpy_toio(__io_virt(addr), buffer, size);
         |         ^~~~~~~~~~~~~
         |         memcpy_toio
   make[3]: *** [scripts/Makefile.build:117: arch/openrisc/kernel/asm-offsets.s] Error 1
   make[3]: Target 'prepare' not remade because of errors.
   make[2]: *** [Makefile:1193: prepare0] Error 2
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:224: __sub-make] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:224: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +1166 include/asm-generic/io.h

  1152	
  1153	#ifndef memset_io
  1154	#define memset_io memset_io
  1155	/**
  1156	 * memset_io	Set a range of I/O memory to a constant value
  1157	 * @addr:	The beginning of the I/O-memory range to set
  1158	 * @val:	The value to set the memory to
  1159	 * @count:	The number of bytes to set
  1160	 *
  1161	 * Set a range of I/O memory to a given value.
  1162	 */
  1163	static inline void memset_io(volatile void __iomem *addr, int value,
  1164				     size_t size)
  1165	{
> 1166		__memset_io(__io_virt(addr), value, size);
  1167	}
  1168	#endif
  1169	
  1170	#ifndef memcpy_fromio
  1171	#define memcpy_fromio memcpy_fromio
  1172	/**
  1173	 * memcpy_fromio	Copy a block of data from I/O memory
  1174	 * @dst:		The (RAM) destination for the copy
  1175	 * @src:		The (I/O memory) source for the data
  1176	 * @count:		The number of bytes to copy
  1177	 *
  1178	 * Copy a block of data from I/O memory.
  1179	 */
  1180	static inline void memcpy_fromio(void *buffer,
  1181					 const volatile void __iomem *addr,
  1182					 size_t size)
  1183	{
> 1184		__memcpy_fromio(buffer, __io_virt(addr), size);
  1185	}
  1186	#endif
  1187	
  1188	#ifndef memcpy_toio
  1189	#define memcpy_toio memcpy_toio
  1190	/**
  1191	 * memcpy_toio		Copy a block of data into I/O memory
  1192	 * @dst:		The (I/O memory) destination for the copy
  1193	 * @src:		The (RAM) source for the data
  1194	 * @count:		The number of bytes to copy
  1195	 *
  1196	 * Copy a block of data to I/O memory.
  1197	 */
  1198	static inline void memcpy_toio(volatile void __iomem *addr, const void *buffer,
  1199				       size_t size)
  1200	{
> 1201		__memcpy_toio(__io_virt(addr), buffer, size);
  1202	}
  1203	#endif
  1204	

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