[hch-misc:hyperv-vmap 1/6] include/asm-generic/io.h:959:17: error: conflicting types for 'iounmap'; have 'void(volatile void *)'

[hch-misc:hyperv-vmap 1/6] include/asm-generic/io.h:959:17: error: conflicting types for 'iounmap'; have 'void(volatile void *)'

[kernel test robot]

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tree:   git://git.infradead.org/users/hch/misc.git hyperv-vmap
head:   8248f295928aded3364a1e54a4e0022e93d3610c
commit: 96214e6115f0f3a234dfb781bd549c08da3b1b2e [1/6] mm: move ioremap_page_range to vmalloc.c
config: riscv-nommu_k210_defconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git remote add hch-misc git://git.infradead.org/users/hch/misc.git
        git fetch --no-tags hch-misc hyperv-vmap
        git checkout 96214e6115f0f3a234dfb781bd549c08da3b1b2e
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=riscv 

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

All errors (new ones prefixed by >>):

   mm/ioremap.c:14:15: warning: no previous prototype for 'ioremap_prot' [-Wmissing-prototypes]
      14 | void __iomem *ioremap_prot(phys_addr_t addr, size_t size, unsigned long prot)
         |               ^~~~~~~~~~~~
   In file included from arch/riscv/include/asm/io.h:136,
                    from include/linux/io.h:13,
                    from mm/ioremap.c:11:
>> include/asm-generic/io.h:959:17: error: conflicting types for 'iounmap'; have 'void(volatile void *)'
     959 | #define iounmap iounmap
         |                 ^~~~~~~
   mm/ioremap.c:45:6: note: in expansion of macro 'iounmap'
      45 | void iounmap(volatile void __iomem *addr)
         |      ^~~~~~~
   include/asm-generic/io.h:959:17: note: previous definition of 'iounmap' with type 'void(void *)'
     959 | #define iounmap iounmap
         |                 ^~~~~~~
   include/asm-generic/io.h:960:20: note: in expansion of macro 'iounmap'
     960 | static inline void iounmap(void __iomem *addr)
         |                    ^~~~~~~


vim +959 include/asm-generic/io.h

3f7e212df82ca0 Arnd Bergmann     2009-05-13  957  
b3ada9d0ce8d28 Greentime Hu      2017-11-22  958  #ifndef iounmap
b3ada9d0ce8d28 Greentime Hu      2017-11-22 @959  #define iounmap iounmap
b3ada9d0ce8d28 Greentime Hu      2017-11-22  960  static inline void iounmap(void __iomem *addr)
b3ada9d0ce8d28 Greentime Hu      2017-11-22  961  {
b3ada9d0ce8d28 Greentime Hu      2017-11-22  962  }
b3ada9d0ce8d28 Greentime Hu      2017-11-22  963  #endif
80b0ca98f91ddb Christoph Hellwig 2019-08-13  964  #elif defined(CONFIG_GENERIC_IOREMAP)
ca5999fde0a176 Mike Rapoport     2020-06-08  965  #include <linux/pgtable.h>
80b0ca98f91ddb Christoph Hellwig 2019-08-13  966  

:::::: The code at line 959 was first introduced by commit
:::::: b3ada9d0ce8d286c8bbbb02fdbddec5036242b42 asm-generic/io.h: move ioremap_nocache/ioremap_uc/ioremap_wc/ioremap_wt out of ifndef CONFIG_MMU

:::::: TO: Greentime Hu <greentime@andestech.com>
:::::: CC: Greentime Hu <greentime@andestech.com>

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

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