[xilinx-xlnx:xlnx_rebase_v5.15_LTS 778/1029] include/linux/compiler_types.h:322:45: error: call to '__compiletime_assert_412' declared with attribute error: FIELD_PREP: mask is not constant

kernel test robot lkp at intel.com
Fri Mar 25 10:27:13 PDT 2022


Hi Rajesh,

FYI, the error/warning still remains.

tree:   https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.15_LTS
head:   1870e0fa79a9d58c6748c34550f3ccea0b515933
commit: 1606e76a608339cc67dfd9b03542976482b90805 [778/1029] v4l: xilinx: Driver support for Xilinx DP Rx subsystem
config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220326/202203260101.0VutLZ2I-lkp@intel.com/config)
compiler: powerpc-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/Xilinx/linux-xlnx/commit/1606e76a608339cc67dfd9b03542976482b90805
        git remote add xilinx-xlnx https://github.com/Xilinx/linux-xlnx
        git fetch --no-tags xilinx-xlnx xlnx_rebase_v5.15_LTS
        git checkout 1606e76a608339cc67dfd9b03542976482b90805
        # 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=powerpc SHELL=/bin/bash drivers/media/platform/xilinx/

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

All errors (new ones prefixed by >>):

   In file included from <command-line>:
   drivers/media/platform/xilinx/xilinx-dprxss.c: In function 'xdprxss_clrset.constprop':
>> include/linux/compiler_types.h:322:45: error: call to '__compiletime_assert_412' declared with attribute error: FIELD_PREP: mask is not constant
     322 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:303:25: note: in definition of macro '__compiletime_assert'
     303 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert'
     322 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:46:17: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      46 |                 BUILD_BUG_ON_MSG(!__builtin_constant_p(_mask),          \
         |                 ^~~~~~~~~~~~~~~~
   include/linux/bitfield.h:94:17: note: in expansion of macro '__BF_FIELD_CHECK'
      94 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/media/platform/xilinx/xilinx-dprxss.c:521:19: note: in expansion of macro 'FIELD_PREP'
     521 |         regval |= FIELD_PREP(clr_mask, set_data);
         |                   ^~~~~~~~~~
>> include/linux/compiler_types.h:322:45: error: call to '__compiletime_assert_416' declared with attribute error: BUILD_BUG_ON failed: (((clr_mask) + (1ULL << (__builtin_ffsll(clr_mask) - 1))) & (((clr_mask) + (1ULL << (__builtin_ffsll(clr_mask) - 1))) - 1)) != 0
     322 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:303:25: note: in definition of macro '__compiletime_assert'
     303 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert'
     322 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   include/linux/build_bug.h:21:9: note: in expansion of macro 'BUILD_BUG_ON'
      21 |         BUILD_BUG_ON(((n) & ((n) - 1)) != 0)
         |         ^~~~~~~~~~~~
   include/linux/bitfield.h:54:17: note: in expansion of macro '__BUILD_BUG_ON_NOT_POWER_OF_2'
      54 |                 __BUILD_BUG_ON_NOT_POWER_OF_2((_mask) +                 \
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:94:17: note: in expansion of macro '__BF_FIELD_CHECK'
      94 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/media/platform/xilinx/xilinx-dprxss.c:521:19: note: in expansion of macro 'FIELD_PREP'
     521 |         regval |= FIELD_PREP(clr_mask, set_data);
         |                   ^~~~~~~~~~


vim +/__compiletime_assert_412 +322 include/linux/compiler_types.h

eb5c2d4b45e3d2 Will Deacon 2020-07-21  308  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  309  #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21  310  	__compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  311  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  312  /**
eb5c2d4b45e3d2 Will Deacon 2020-07-21  313   * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  314   * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2 Will Deacon 2020-07-21  315   * @msg:       a message to emit if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  316   *
eb5c2d4b45e3d2 Will Deacon 2020-07-21  317   * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  318   * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  319   * compiler has support to do so.
eb5c2d4b45e3d2 Will Deacon 2020-07-21  320   */
eb5c2d4b45e3d2 Will Deacon 2020-07-21  321  #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 @322  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  323  

:::::: The code at line 322 was first introduced by commit
:::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h

:::::: TO: Will Deacon <will at kernel.org>
:::::: CC: Will Deacon <will at kernel.org>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp



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