Re: [PATCH v2 3/5] fpga manager: Add cyclone-ps-spi driver for Altera FPGAs

From: kbuild test robot
Date: Fri Oct 28 2016 - 15:27:24 EST

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>

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