linux-kernel - Re: [PATCH 1/7] bitops: Introduce the for_each_set_port

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Date:   Tue, 8 May 2018 07:36:31 +0800
From:   kbuild test robot <lkp@...el.com>
To:     William Breathitt Gray <vilhelm.gray@...il.com>
Cc:     kbuild-all@...org, linus.walleij@...aro.org,
        linux-gpio@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        William Breathitt Gray <vilhelm.gray@...il.com>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 1/7] bitops: Introduce the for_each_set_port_word macro

Hi William,

I love your patch! Yet something to improve:

[auto build test ERROR on gpio/for-next]
[also build test ERROR on v4.17-rc4 next-20180507]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/William-Breathitt-Gray/Introduce-the-for_each_set_port_word-macro/20180508-034417
base:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git for-next
config: openrisc-or1ksim_defconfig (attached as .config)
compiler: or1k-linux-gcc (GCC) 6.0.0 20160327 (experimental)
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=openrisc 

All errors (new ones prefixed by >>):

   In file included from arch/openrisc/include/asm/bitops.h:37:0,
                    from include/linux/bitops.h:38,
                    from include/linux/radix-tree.h:24,
                    from kernel/memremap.c:13:
>> include/asm-generic/bitops/find.h:98:1: error: unknown type name 'size_t'
    size_t find_next_port_word(size_t *const word_index,
    ^~~~~~
   include/asm-generic/bitops/find.h:98:28: error: unknown type name 'size_t'
    size_t find_next_port_word(size_t *const word_index,
                               ^~~~~~
   include/asm-generic/bitops/find.h:100:46: error: unknown type name 'size_t'
          const unsigned long *const bits, const size_t size,
                                                 ^~~~~~
   include/asm-generic/bitops/find.h:101:13: error: unknown type name 'size_t'
          const size_t offset, const unsigned int port_size);
                ^~~~~~

vim +/size_t +98 include/asm-generic/bitops/find.h

    82	
    83	/**
    84	 * find_next_port_word - find next port word with set bits in a memory region
    85	 * @word_index: location to store bitmap word index of found port word
    86	 * @word_offset: bits offset of the found port word in respective bitmap word
    87	 * @bits: address to base the search on
    88	 * @size: bitmap size in number of ports
    89	 * @offset: port word index to start searching at
    90	 * @port_size: port word size in bits
    91	 *
    92	 * Returns the port index for the next port word with set bits; the respective
    93	 * bitmap word index is stored at the location pointed by @word_index, and the
    94	 * bits offset of the found port word within the respective bitmap word is
    95	 * stored at the location pointed by @word_offset. If no bits are set, returns
    96	 * @size.
    97	 */
  > 98	size_t find_next_port_word(size_t *const word_index,
    99				   unsigned int *const word_offset,
   100				   const unsigned long *const bits, const size_t size,
   101				   const size_t offset, const unsigned int port_size);
   102	

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