7:08 p.m.
Hi Poey,
FYI, the error/warning still remains.
tree: https://github.com/intel/linux-intel-lts.git 5.4/yocto
head: 36f93ff941f127f4137ab369aecbdd995fb58c66
commit: c5612e33a5de5b6ae673f25b4b36da9bf54e9ee5 [11123/20394] pwm: Add count attribute in
sysfs for Intel Keem Bay
config: nds32-buildonly-randconfig-r005-20220119
(https://download.01.org/0day-ci/archive/20220121/202201211634.Gsb8Nf6P-lk...)
compiler: nds32le-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
#
https://github.com/intel/linux-intel-lts/commit/c5612e33a5de5b6ae673f25b4...
git remote add intel-lts https://github.com/intel/linux-intel-lts.git
git fetch --no-tags intel-lts 5.4/yocto
git checkout c5612e33a5de5b6ae673f25b4b36da9bf54e9ee5
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir
ARCH=nds32 SHELL=/bin/bash drivers/pwm/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
In file included from drivers/pwm/pwm-keembay.c:16:
In function 'field_multiplier',
inlined from 'field_mask' at include/linux/bitfield.h:111:17,
inlined from 'u32_encode_bits' at include/linux/bitfield.h:140:1,
inlined from 'u32_replace_bits' at include/linux/bitfield.h:140:1,
inlined from 'keembay_pwm_update_bits' at drivers/pwm/pwm-keembay.c:55:9:
> include/linux/bitfield.h:106:17: error: call to
'__bad_mask' declared with attribute error: bad bitfield mask
106 |
__bad_mask();
| ^~~~~~~~~~~~
In function 'field_multiplier',
inlined from 'u32_encode_bits' at include/linux/bitfield.h:140:1,
inlined from 'u32_replace_bits' at include/linux/bitfield.h:140:1,
inlined from 'keembay_pwm_update_bits' at drivers/pwm/pwm-keembay.c:55:9:
> include/linux/bitfield.h:106:17: error: call to
'__bad_mask' declared with attribute error: bad bitfield mask
106 |
__bad_mask();
| ^~~~~~~~~~~~
vim +/__bad_mask +106 include/linux/bitfield.h
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 43
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 44 #define __BF_FIELD_CHECK(_mask, _reg,
_val, _pfx) \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 45 ({ \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 46
BUILD_BUG_ON_MSG(!__builtin_constant_p(_mask), \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 47 _pfx "mask is not
constant"); \
e36488c83b6d87 Arnd Bergmann 2018-08-17 48 BUILD_BUG_ON_MSG((_mask) == 0, _pfx
"mask is zero"); \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 49
BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ? \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 50 ~((_mask) >> __bf_shf(_mask))
& (_val) : 0, \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 51 _pfx "value too large for the
field"); \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 52 BUILD_BUG_ON_MSG((_mask) >
(typeof(_reg))~0ull, \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 53 _pfx "type of reg too small for
mask"); \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 54 __BUILD_BUG_ON_NOT_POWER_OF_2((_mask)
+ \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 55 (1ULL <<
__bf_shf(_mask))); \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 56 })
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 57
1697599ee301a5 Jakub Kicinski 2017-02-09 58 /**
1697599ee301a5 Jakub Kicinski 2017-02-09 59 * FIELD_FIT() - check if value fits in
the field
1697599ee301a5 Jakub Kicinski 2017-02-09 60 * @_mask: shifted mask defining the
field's length and position
1697599ee301a5 Jakub Kicinski 2017-02-09 61 * @_val: value to test against the
field
1697599ee301a5 Jakub Kicinski 2017-02-09 62 *
1697599ee301a5 Jakub Kicinski 2017-02-09 63 * Return: true if @_val can fit inside
@_mask, false if @_val is too big.
1697599ee301a5 Jakub Kicinski 2017-02-09 64 */
1697599ee301a5 Jakub Kicinski 2017-02-09 65 #define FIELD_FIT(_mask, _val) \
1697599ee301a5 Jakub Kicinski 2017-02-09 66 ({ \
5be9072b8121b5 Jakub Kicinski 2020-08-10 67 __BF_FIELD_CHECK(_mask, 0ULL, 0ULL,
"FIELD_FIT: "); \
1697599ee301a5 Jakub Kicinski 2017-02-09 68 !((((typeof(_mask))_val) <<
__bf_shf(_mask)) & ~(_mask)); \
1697599ee301a5 Jakub Kicinski 2017-02-09 69 })
1697599ee301a5 Jakub Kicinski 2017-02-09 70
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 71 /**
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 72 * FIELD_PREP() - prepare a bitfield
element
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 73 * @_mask: shifted mask defining the
field's length and position
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 74 * @_val: value to put in the field
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 75 *
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 76 * FIELD_PREP() masks and shifts up the
value. The result should
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 77 * be combined with other fields of the
bitfield using logical OR.
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 78 */
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 79 #define FIELD_PREP(_mask, _val) \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 80 ({ \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 81 __BF_FIELD_CHECK(_mask, 0ULL, _val,
"FIELD_PREP: "); \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 82 ((typeof(_mask))(_val) <<
__bf_shf(_mask)) & (_mask); \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 83 })
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 84
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 85 /**
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 86 * FIELD_GET() - extract a bitfield
element
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 87 * @_mask: shifted mask defining the
field's length and position
7240767450d6d8 Masahiro Yamada 2017-10-03 88 * @_reg: value of entire bitfield
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 89 *
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 90 * FIELD_GET() extracts the field
specified by @_mask from the
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 91 * bitfield passed in as @_reg by masking
and shifting it down.
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 92 */
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 93 #define FIELD_GET(_mask, _reg) \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 94 ({ \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 95 __BF_FIELD_CHECK(_mask, _reg, 0U,
"FIELD_GET: "); \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 96 (typeof(_mask))(((_reg) & (_mask))
>> __bf_shf(_mask)); \
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 97 })
3e9b3112ec74f1 Jakub Kicinski 2016-08-31 98
e7d4a95da86e0b Johannes Berg 2018-06-20 99 extern void
__compiletime_error("value doesn't fit into mask")
00b0c9b82663ac Al Viro 2017-12-14 100 __field_overflow(void);
00b0c9b82663ac Al Viro 2017-12-14 101 extern void __compiletime_error("bad
bitfield mask")
00b0c9b82663ac Al Viro 2017-12-14 102 __bad_mask(void);
00b0c9b82663ac Al Viro 2017-12-14 103 static __always_inline u64
field_multiplier(u64 field)
00b0c9b82663ac Al Viro 2017-12-14 104 {
00b0c9b82663ac Al Viro 2017-12-14 105 if ((field | (field - 1)) & ((field |
(field - 1)) + 1))
00b0c9b82663ac Al Viro 2017-12-14 @106 __bad_mask();
00b0c9b82663ac Al Viro 2017-12-14 107 return field & -field;
00b0c9b82663ac Al Viro 2017-12-14 108 }
00b0c9b82663ac Al Viro 2017-12-14 109 static __always_inline u64 field_mask(u64
field)
00b0c9b82663ac Al Viro 2017-12-14 110 {
00b0c9b82663ac Al Viro 2017-12-14 @111 return field / field_multiplier(field);
00b0c9b82663ac Al Viro 2017-12-14 112 }
00b0c9b82663ac Al Viro 2017-12-14 113 #define
____MAKE_OP(type,base,to,from) \
00b0c9b82663ac Al Viro 2017-12-14 114 static __always_inline __##type
type##_encode_bits(base v, base field) \
00b0c9b82663ac Al Viro 2017-12-14 115 { \
e7d4a95da86e0b Johannes Berg 2018-06-20 116 if (__builtin_constant_p(v) && (v
& ~field_mask(field))) \
00b0c9b82663ac Al Viro 2017-12-14 117 __field_overflow(); \
00b0c9b82663ac Al Viro 2017-12-14 118 return to((v & field_mask(field)) *
field_multiplier(field)); \
00b0c9b82663ac Al Viro 2017-12-14 119 } \
00b0c9b82663ac Al Viro 2017-12-14 120 static __always_inline __##type
type##_replace_bits(__##type old, \
00b0c9b82663ac Al Viro 2017-12-14 121 base val, base field) \
00b0c9b82663ac Al Viro 2017-12-14 122 { \
00b0c9b82663ac Al Viro 2017-12-14 123 return (old & ~to(field)) |
type##_encode_bits(val, field); \
00b0c9b82663ac Al Viro 2017-12-14 124 } \
00b0c9b82663ac Al Viro 2017-12-14 125 static __always_inline void
type##p_replace_bits(__##type *p, \
00b0c9b82663ac Al Viro 2017-12-14 126 base val, base field) \
00b0c9b82663ac Al Viro 2017-12-14 127 { \
00b0c9b82663ac Al Viro 2017-12-14 128 *p = (*p & ~to(field)) |
type##_encode_bits(val, field); \
00b0c9b82663ac Al Viro 2017-12-14 129 } \
00b0c9b82663ac Al Viro 2017-12-14 130 static __always_inline base
type##_get_bits(__##type v, base field) \
00b0c9b82663ac Al Viro 2017-12-14 131 { \
00b0c9b82663ac Al Viro 2017-12-14 132 return (from(v) &
field)/field_multiplier(field); \
00b0c9b82663ac Al Viro 2017-12-14 133 }
00b0c9b82663ac Al Viro 2017-12-14 134 #define __MAKE_OP(size) \
00b0c9b82663ac Al Viro 2017-12-14 135
____MAKE_OP(le##size,u##size,cpu_to_le##size,le##size##_to_cpu) \
00b0c9b82663ac Al Viro 2017-12-14 136
____MAKE_OP(be##size,u##size,cpu_to_be##size,be##size##_to_cpu) \
00b0c9b82663ac Al Viro 2017-12-14 137 ____MAKE_OP(u##size,u##size,,)
37a3862e123826 Johannes Berg 2018-06-20 138 ____MAKE_OP(u8,u8,,)
00b0c9b82663ac Al Viro 2017-12-14 139 __MAKE_OP(16)
00b0c9b82663ac Al Viro 2017-12-14 140 __MAKE_OP(32)
00b0c9b82663ac Al Viro 2017-12-14 141 __MAKE_OP(64)
00b0c9b82663ac Al Viro 2017-12-14 142 #undef __MAKE_OP
00b0c9b82663ac Al Viro 2017-12-14 143 #undef ____MAKE_OP
00b0c9b82663ac Al Viro 2017-12-14 144
:::::: The code at line 106 was first introduced by commit
:::::: 00b0c9b82663ac42e5a09f58ce960f81f29d64ee Add primitives for manipulating bitfields
both in host- and fixed-endian.
:::::: TO: Al Viro <viro(a)zeniv.linux.org.uk>
:::::: CC: Al Viro <viro(a)zeniv.linux.org.uk>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org