[lee-leds:for-leds-next-next 19/19] include/linux/compiler_types.h:630:45: error: call to '__compiletime_assert_186' declared with attribute error: min(intensity_value[i], led_cdev->max_brightness) signedness error

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/lee/leds.git for-leds-next-next
head:   129f82752bcecd554936209aac4dbdd888e92224
commit: 129f82752bcecd554936209aac4dbdd888e92224 [19/19] leds: multicolor: Limit intensity to max_brightness of LED
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20260206/202602060923.xIgdQXjI-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260206/202602060923.xIgdQXjI-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202602060923.xIgdQXjI-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from <command-line>:
   drivers/leds/led-class-multicolor.c: In function 'multi_intensity_store':
>> include/linux/compiler_types.h:630:45: error: call to '__compiletime_assert_186' declared with attribute error: min(intensity_value[i], led_cdev->max_brightness) signedness error
     630 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:611:25: note: in definition of macro '__compiletime_assert'
     611 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:630:9: note: in expansion of macro '_compiletime_assert'
     630 |         _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/minmax.h:93:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      93 |         BUILD_BUG_ON_MSG(!__types_ok(ux, uy),           \
         |         ^~~~~~~~~~~~~~~~
   include/linux/minmax.h:98:9: note: in expansion of macro '__careful_cmp_once'
      98 |         __careful_cmp_once(op, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
         |         ^~~~~~~~~~~~~~~~~~
   include/linux/minmax.h:105:25: note: in expansion of macro '__careful_cmp'
     105 | #define min(x, y)       __careful_cmp(min, x, y)
         |                         ^~~~~~~~~~~~~
   drivers/leds/led-class-multicolor.c:51:38: note: in expansion of macro 'min'
      51 |                 intensity_value[i] = min(intensity_value[i],
         |                                      ^~~


vim +/__compiletime_assert_186 +630 include/linux/compiler_types.h

eb5c2d4b45e3d2 Will Deacon 2020-07-21  616  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  617  #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21  618  	__compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  619  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  620  /**
eb5c2d4b45e3d2 Will Deacon 2020-07-21  621   * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  622   * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2 Will Deacon 2020-07-21  623   * @msg:       a message to emit if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  624   *
eb5c2d4b45e3d2 Will Deacon 2020-07-21  625   * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  626   * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  627   * compiler has support to do so.
eb5c2d4b45e3d2 Will Deacon 2020-07-21  628   */
eb5c2d4b45e3d2 Will Deacon 2020-07-21  629  #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 @630  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  631  

:::::: The code at line 630 was first introduced by commit
:::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h

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

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