scripts/mod/modpost.c:57:13: warning: variable 'extra_warn' set but not used

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

:::::: 
:::::: Manual check reason: "only suspicious fbc files changed"
:::::: 

BCC: lkp@intel.com
CC: llvm@lists.linux.dev
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
CC: Masahiro Yamada <masahiroy@kernel.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   7aaa8047eafd0bd628065b15757d9b48c5f9c07d
commit: 6c6c1fc09de35f409f6971cb9e881103afe5dbe0 modpost: require a MODULE_DESCRIPTION()
date:   1 year ago
:::::: branch date: 86 minutes ago
:::::: commit date: 1 year ago
config: loongarch-allnoconfig (https://download.01.org/0day-ci/archive/20260330/202603300830.fbqcSGEA-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 054e11d1a17e5ba88bb1a8ef32fad3346e80b186)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260330/202603300830.fbqcSGEA-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/r/202603300830.fbqcSGEA-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> scripts/mod/modpost.c:57:13: warning: variable 'extra_warn' set but not used [-Wunused-but-set-global]
      57 | static bool extra_warn;
         |             ^
   1 warning generated.
--
   scripts/dtc/dtc-lexer.lex.c:630:12: warning: variable 'dts_version' set but not used [-Wunused-but-set-global]
     630 | static int dts_version = 1;
         |            ^
   1 warning generated.
   scripts/sorttable.c:399:12: warning: variable 'long_size' set but not used [-Wunused-but-set-global]
     399 | static int long_size;
         |            ^
   1 warning generated.
>> scripts/mod/modpost.c:57:13: warning: variable 'extra_warn' set but not used [-Wunused-but-set-global]
      57 | static bool extra_warn;
         |             ^
   1 warning generated.
   In file included from arch/loongarch/kernel/asm-offsets.c:12:
   In file included from include/linux/kvm_host.h:45:
   In file included from arch/loongarch/include/asm/kvm_host.h:20:
   In file included from arch/loongarch/include/asm/kvm_mmu.h:11:
   arch/loongarch/include/asm/tlb.h:142:24: warning: default initialization of an object of type 'struct vm_area_struct' with const member leaves the object uninitialized [-Wdefault-const-init-field-unsafe]
     142 |         struct vm_area_struct vma;
         |                               ^
   include/linux/mm_types.h:707:20: note: member 'vm_flags' declared 'const' here
     707 |                 const vm_flags_t vm_flags;
         |                                  ^
   1 warning generated.


vim +/extra_warn +57 scripts/mod/modpost.c

0fd3fbadd9a85e3 Masahiro Yamada 2020-12-01  56  
20ff36856fe0087 Masahiro Yamada 2023-06-06 @57  static bool extra_warn;
20ff36856fe0087 Masahiro Yamada 2023-06-06  58  

:::::: The code at line 57 was first introduced by commit
:::::: 20ff36856fe00879f82de71fe6f1482ca1b72334 modpost: propagate W=1 build option to modpost

:::::: TO: Masahiro Yamada <masahiroy@kernel.org>
:::::: CC: Masahiro Yamada <masahiroy@kernel.org>

-- 
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