Hi Chen, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on v6.12 next-20241125] [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/Chen-Ridong/padata-add-pd-get-put-refcnt-helper/20241125-111043 base: linus/master patch link: https://lore.kernel.org/r/20241123080509.2573987-2-chenridong%40huaweicloud.com patch subject: [PATCH 1/2] padata: add pd get/put refcnt helper config: x86_64-randconfig-161-20241125 (https://download.01.org/0day-ci/archive/20241125/202411252108.XGoGQSTI-lkp@xxxxxxxxx/config) compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241125/202411252108.XGoGQSTI-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/202411252108.XGoGQSTI-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> kernel/padata.c:1134:24: warning: variable 'pd' set but not used [-Wunused-but-set-variable] 1134 | struct parallel_data *pd; | ^ 1 warning generated. vim +/pd +1134 kernel/padata.c bbefa1dd6a6d53 Herbert Xu 2019-11-26 1126 bbefa1dd6a6d53 Herbert Xu 2019-11-26 1127 /** bbefa1dd6a6d53 Herbert Xu 2019-11-26 1128 * padata_free_shell - free a padata shell bbefa1dd6a6d53 Herbert Xu 2019-11-26 1129 * bbefa1dd6a6d53 Herbert Xu 2019-11-26 1130 * @ps: padata shell to free bbefa1dd6a6d53 Herbert Xu 2019-11-26 1131 */ bbefa1dd6a6d53 Herbert Xu 2019-11-26 1132 void padata_free_shell(struct padata_shell *ps) bbefa1dd6a6d53 Herbert Xu 2019-11-26 1133 { 7ddc21e317b360 WangJinchao 2023-10-16 @1134 struct parallel_data *pd; 7ddc21e317b360 WangJinchao 2023-10-16 1135 07b24c7c08bdc2 Eric Biggers 2020-02-25 1136 if (!ps) 07b24c7c08bdc2 Eric Biggers 2020-02-25 1137 return; bbefa1dd6a6d53 Herbert Xu 2019-11-26 1138 07b24c7c08bdc2 Eric Biggers 2020-02-25 1139 mutex_lock(&ps->pinst->lock); bbefa1dd6a6d53 Herbert Xu 2019-11-26 1140 list_del(&ps->list); 7ddc21e317b360 WangJinchao 2023-10-16 1141 pd = rcu_dereference_protected(ps->pd, 1); 31df8a12c672a5 Chen Ridong 2024-11-23 1142 padata_put_pd(ps->pd); 07b24c7c08bdc2 Eric Biggers 2020-02-25 1143 mutex_unlock(&ps->pinst->lock); bbefa1dd6a6d53 Herbert Xu 2019-11-26 1144 bbefa1dd6a6d53 Herbert Xu 2019-11-26 1145 kfree(ps); bbefa1dd6a6d53 Herbert Xu 2019-11-26 1146 } bbefa1dd6a6d53 Herbert Xu 2019-11-26 1147 EXPORT_SYMBOL(padata_free_shell); bbefa1dd6a6d53 Herbert Xu 2019-11-26 1148 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
