Hi Joshua, [auto build test ERROR on linus/master] [also build test ERROR on v4.9-rc2 next-20161028] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] [Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on] [Check https://git-scm.com/docs/git-format-patch for more information] url: https://github.com/0day-ci/linux/commits/Joshua-Clayton/lib-add-bitrev8x4/20161029-012535 config: arm64-allmodconfig (attached as .config) compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm64 All error/warnings (new ones prefixed by >>): In file included from drivers/fpga/cyclone-ps-spi.c:13:0: drivers/fpga/cyclone-ps-spi.c: In function 'rev_buf': >> include/linux/bitrev.h:12:21: error: implicit declaration of function '__arch_bitrev8x4' [-Werror=implicit-function-declaration] #define __bitrev8x4 __arch_bitrev8x4 ^ >> include/linux/bitrev.h:101:2: note: in expansion of macro '__bitrev8x4' __bitrev8x4(__x); \ ^~~~~~~~~~~ >> drivers/fpga/cyclone-ps-spi.c:75:11: note: in expansion of macro 'bitrev8x4' *fw32 = bitrev8x4(*fw32); ^~~~~~~~~ In file included from include/linux/delay.h:10:0, from drivers/fpga/cyclone-ps-spi.c:14: drivers/fpga/cyclone-ps-spi.c: In function 'cyclonespi_write': include/linux/kernel.h:739:16: warning: comparison of distinct pointer types lacks a cast (void) (&min1 == &min2); \ ^ include/linux/kernel.h:742:2: note: in expansion of macro '__min' __min(typeof(x), typeof(y), \ ^~~~~ drivers/fpga/cyclone-ps-spi.c:89:19: note: in expansion of macro 'min' size_t stride = min(fw_data_end - fw_data, SZ_4K); ^~~ cc1: some warnings being treated as errors vim +/__arch_bitrev8x4 +12 include/linux/bitrev.h 556d2f05 Yalin Wang 2014-11-03 6 #ifdef CONFIG_HAVE_ARCH_BITREVERSE 556d2f05 Yalin Wang 2014-11-03 7 #include <asm/bitrev.h> 556d2f05 Yalin Wang 2014-11-03 8 556d2f05 Yalin Wang 2014-11-03 9 #define __bitrev32 __arch_bitrev32 556d2f05 Yalin Wang 2014-11-03 10 #define __bitrev16 __arch_bitrev16 556d2f05 Yalin Wang 2014-11-03 11 #define __bitrev8 __arch_bitrev8 69ff2a81 Joshua Clayton 2016-10-28 @12 #define __bitrev8x4 __arch_bitrev8x4 a5cfc1ec Akinobu Mita 2006-12-08 13 556d2f05 Yalin Wang 2014-11-03 14 #else 556d2f05 Yalin Wang 2014-11-03 15 extern u8 const byte_rev_table[256]; 556d2f05 Yalin Wang 2014-11-03 16 static inline u8 __bitrev8(u8 byte) a5cfc1ec Akinobu Mita 2006-12-08 17 { a5cfc1ec Akinobu Mita 2006-12-08 18 return byte_rev_table[byte]; a5cfc1ec Akinobu Mita 2006-12-08 19 } a5cfc1ec Akinobu Mita 2006-12-08 20 556d2f05 Yalin Wang 2014-11-03 21 static inline u16 __bitrev16(u16 x) 556d2f05 Yalin Wang 2014-11-03 22 { 556d2f05 Yalin Wang 2014-11-03 23 return (__bitrev8(x & 0xff) << 8) | __bitrev8(x >> 8); 556d2f05 Yalin Wang 2014-11-03 24 } 556d2f05 Yalin Wang 2014-11-03 25 556d2f05 Yalin Wang 2014-11-03 26 static inline u32 __bitrev32(u32 x) 556d2f05 Yalin Wang 2014-11-03 27 { 556d2f05 Yalin Wang 2014-11-03 28 return (__bitrev16(x & 0xffff) << 16) | __bitrev16(x >> 16); 556d2f05 Yalin Wang 2014-11-03 29 } 556d2f05 Yalin Wang 2014-11-03 30 69ff2a81 Joshua Clayton 2016-10-28 31 static inline u32 __bitrev8x4(u32 x) 69ff2a81 Joshua Clayton 2016-10-28 32 { 69ff2a81 Joshua Clayton 2016-10-28 33 return(__bitrev8(x & 0xff) | 69ff2a81 Joshua Clayton 2016-10-28 34 (__bitrev8((x >> 8) & 0xff) << 8) | 69ff2a81 Joshua Clayton 2016-10-28 35 (__bitrev8((x >> 16) & 0xff) << 16) | 69ff2a81 Joshua Clayton 2016-10-28 36 (__bitrev8((x >> 24) & 0xff) << 24)); 69ff2a81 Joshua Clayton 2016-10-28 37 } 69ff2a81 Joshua Clayton 2016-10-28 38 556d2f05 Yalin Wang 2014-11-03 39 #endif /* CONFIG_HAVE_ARCH_BITREVERSE */ 556d2f05 Yalin Wang 2014-11-03 40 556d2f05 Yalin Wang 2014-11-03 41 #define __constant_bitrev32(x) \ 556d2f05 Yalin Wang 2014-11-03 42 ({ \ 556d2f05 Yalin Wang 2014-11-03 43 u32 __x = x; \ 556d2f05 Yalin Wang 2014-11-03 44 __x = (__x >> 16) | (__x << 16); \ 556d2f05 Yalin Wang 2014-11-03 45 __x = ((__x & (u32)0xFF00FF00UL) >> 8) | ((__x & (u32)0x00FF00FFUL) << 8); \ 556d2f05 Yalin Wang 2014-11-03 46 __x = ((__x & (u32)0xF0F0F0F0UL) >> 4) | ((__x & (u32)0x0F0F0F0FUL) << 4); \ 556d2f05 Yalin Wang 2014-11-03 47 __x = ((__x & (u32)0xCCCCCCCCUL) >> 2) | ((__x & (u32)0x33333333UL) << 2); \ 556d2f05 Yalin Wang 2014-11-03 48 __x = ((__x & (u32)0xAAAAAAAAUL) >> 1) | ((__x & (u32)0x55555555UL) << 1); \ 556d2f05 Yalin Wang 2014-11-03 49 __x; \ 556d2f05 Yalin Wang 2014-11-03 50 }) 556d2f05 Yalin Wang 2014-11-03 51 556d2f05 Yalin Wang 2014-11-03 52 #define __constant_bitrev16(x) \ 556d2f05 Yalin Wang 2014-11-03 53 ({ \ 556d2f05 Yalin Wang 2014-11-03 54 u16 __x = x; \ 556d2f05 Yalin Wang 2014-11-03 55 __x = (__x >> 8) | (__x << 8); \ 556d2f05 Yalin Wang 2014-11-03 56 __x = ((__x & (u16)0xF0F0U) >> 4) | ((__x & (u16)0x0F0FU) << 4); \ 556d2f05 Yalin Wang 2014-11-03 57 __x = ((__x & (u16)0xCCCCU) >> 2) | ((__x & (u16)0x3333U) << 2); \ 556d2f05 Yalin Wang 2014-11-03 58 __x = ((__x & (u16)0xAAAAU) >> 1) | ((__x & (u16)0x5555U) << 1); \ 556d2f05 Yalin Wang 2014-11-03 59 __x; \ 556d2f05 Yalin Wang 2014-11-03 60 }) 556d2f05 Yalin Wang 2014-11-03 61 69ff2a81 Joshua Clayton 2016-10-28 62 #define __constant_bitrev8x4(x) \ 69ff2a81 Joshua Clayton 2016-10-28 63 ({ \ 69ff2a81 Joshua Clayton 2016-10-28 64 u32 __x = x; \ 69ff2a81 Joshua Clayton 2016-10-28 65 __x = ((__x & (u32)0xF0F0F0F0UL) >> 4) | ((__x & (u32)0x0F0F0F0FUL) << 4); \ 69ff2a81 Joshua Clayton 2016-10-28 66 __x = ((__x & (u32)0xCCCCCCCCUL) >> 2) | ((__x & (u32)0x33333333UL) << 2); \ 69ff2a81 Joshua Clayton 2016-10-28 67 __x = ((__x & (u32)0xAAAAAAAAUL) >> 1) | ((__x & (u32)0x55555555UL) << 1); \ 69ff2a81 Joshua Clayton 2016-10-28 68 __x; \ 69ff2a81 Joshua Clayton 2016-10-28 69 }) 69ff2a81 Joshua Clayton 2016-10-28 70 556d2f05 Yalin Wang 2014-11-03 71 #define __constant_bitrev8(x) \ 556d2f05 Yalin Wang 2014-11-03 72 ({ \ 556d2f05 Yalin Wang 2014-11-03 73 u8 __x = x; \ 556d2f05 Yalin Wang 2014-11-03 74 __x = (__x >> 4) | (__x << 4); \ 556d2f05 Yalin Wang 2014-11-03 75 __x = ((__x & (u8)0xCCU) >> 2) | ((__x & (u8)0x33U) << 2); \ 556d2f05 Yalin Wang 2014-11-03 76 __x = ((__x & (u8)0xAAU) >> 1) | ((__x & (u8)0x55U) << 1); \ 556d2f05 Yalin Wang 2014-11-03 77 __x; \ 556d2f05 Yalin Wang 2014-11-03 78 }) 556d2f05 Yalin Wang 2014-11-03 79 556d2f05 Yalin Wang 2014-11-03 80 #define bitrev32(x) \ 556d2f05 Yalin Wang 2014-11-03 81 ({ \ 556d2f05 Yalin Wang 2014-11-03 82 u32 __x = x; \ 556d2f05 Yalin Wang 2014-11-03 83 __builtin_constant_p(__x) ? \ 556d2f05 Yalin Wang 2014-11-03 84 __constant_bitrev32(__x) : \ 556d2f05 Yalin Wang 2014-11-03 85 __bitrev32(__x); \ 556d2f05 Yalin Wang 2014-11-03 86 }) 556d2f05 Yalin Wang 2014-11-03 87 556d2f05 Yalin Wang 2014-11-03 88 #define bitrev16(x) \ 556d2f05 Yalin Wang 2014-11-03 89 ({ \ 556d2f05 Yalin Wang 2014-11-03 90 u16 __x = x; \ 556d2f05 Yalin Wang 2014-11-03 91 __builtin_constant_p(__x) ? \ 556d2f05 Yalin Wang 2014-11-03 92 __constant_bitrev16(__x) : \ 556d2f05 Yalin Wang 2014-11-03 93 __bitrev16(__x); \ 556d2f05 Yalin Wang 2014-11-03 94 }) a5cfc1ec Akinobu Mita 2006-12-08 95 69ff2a81 Joshua Clayton 2016-10-28 96 #define bitrev8x4(x) \ 69ff2a81 Joshua Clayton 2016-10-28 97 ({ \ 69ff2a81 Joshua Clayton 2016-10-28 98 u32 __x = x; \ 69ff2a81 Joshua Clayton 2016-10-28 99 __builtin_constant_p(__x) ? \ 69ff2a81 Joshua Clayton 2016-10-28 100 __constant_bitrev8x4(__x) : \ 69ff2a81 Joshua Clayton 2016-10-28 @101 __bitrev8x4(__x); \ 69ff2a81 Joshua Clayton 2016-10-28 102 }) 69ff2a81 Joshua Clayton 2016-10-28 103 556d2f05 Yalin Wang 2014-11-03 104 #define bitrev8(x) \ :::::: The code at line 12 was first introduced by commit :::::: 69ff2a81709e0969b2d1a0efaa9a010e0093917c lib: add bitrev8x4() :::::: TO: Joshua Clayton <stillcompiling@xxxxxxxxx> :::::: CC: 0day robot <fengguang.wu@xxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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