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Re: [PATCH v2][next] wifi: iwlwifi: mvm: Use __counted_by() and avoid -Wfamnae warnings

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Hi Gustavo,

kernel test robot noticed the following build errors:

[auto build test ERROR on wireless-next/main]
[also build test ERROR on wireless/main linus/master v6.11-rc2 next-20240809]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Gustavo-A-R-Silva/wifi-iwlwifi-mvm-Use-__counted_by-and-avoid-Wfamnae-warnings/20240810-103759
base:   https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next.git main
patch link:    https://lore.kernel.org/r/ZrZs5KL5Pz9tIinr%40cute
patch subject: [PATCH v2][next] wifi: iwlwifi: mvm: Use __counted_by() and avoid -Wfamnae warnings
config: sparc-allmodconfig (https://download.01.org/0day-ci/archive/20240811/202408110304.CRXk8u09-lkp@xxxxxxxxx/config)
compiler: sparc64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240811/202408110304.CRXk8u09-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408110304.CRXk8u09-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   In file included from <command-line>:
   drivers/net/wireless/intel/iwlwifi/mvm/d3.c: In function 'iwl_mvm_gtk_rekey':
>> include/linux/compiler_types.h:510:45: error: call to '__compiletime_assert_821' declared with attribute error: BUILD_BUG_ON failed: conf->keylen < WLAN_KEY_LEN_CCMP
     510 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:491:25: note: in definition of macro '__compiletime_assert'
     491 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:510:9: note: in expansion of macro '_compiletime_assert'
     510 |         _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)
         |         ^~~~~~~~~~~~~~~~
   drivers/net/wireless/intel/iwlwifi/mvm/d3.c:2148:9: note: in expansion of macro 'BUILD_BUG_ON'
    2148 |         BUILD_BUG_ON(conf->keylen < WLAN_KEY_LEN_CCMP);
         |         ^~~~~~~~~~~~
>> include/linux/compiler_types.h:510:45: error: call to '__compiletime_assert_822' declared with attribute error: BUILD_BUG_ON failed: conf->keylen < WLAN_KEY_LEN_GCMP_256
     510 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:491:25: note: in definition of macro '__compiletime_assert'
     491 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:510:9: note: in expansion of macro '_compiletime_assert'
     510 |         _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)
         |         ^~~~~~~~~~~~~~~~
   drivers/net/wireless/intel/iwlwifi/mvm/d3.c:2149:9: note: in expansion of macro 'BUILD_BUG_ON'
    2149 |         BUILD_BUG_ON(conf->keylen < WLAN_KEY_LEN_GCMP_256);
         |         ^~~~~~~~~~~~


vim +/__compiletime_assert_821 +510 include/linux/compiler_types.h

eb5c2d4b45e3d2 Will Deacon 2020-07-21  496  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  497  #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21  498  	__compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  499  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  500  /**
eb5c2d4b45e3d2 Will Deacon 2020-07-21  501   * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  502   * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2 Will Deacon 2020-07-21  503   * @msg:       a message to emit if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  504   *
eb5c2d4b45e3d2 Will Deacon 2020-07-21  505   * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  506   * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  507   * compiler has support to do so.
eb5c2d4b45e3d2 Will Deacon 2020-07-21  508   */
eb5c2d4b45e3d2 Will Deacon 2020-07-21  509  #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 @510  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  511  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki




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