tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 6145d80cfc62e3ed8f16ff584d6287e6d88b82b9 commit: ba58d1216e2b2d2320b50591b767f50b13c623a8 [10309/11059] iommu/fsl_pamu: remove support for multiple windows config: powerpc64-randconfig-r002-20210409 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project dd453a1389b6a7e6d9214b449d3c54981b1a89b6) 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 # install powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=ba58d1216e2b2d2320b50591b767f50b13c623a8 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout ba58d1216e2b2d2320b50591b767f50b13c623a8 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/iommu/fsl_pamu_domain.c:129:5: warning: variable 'i' is uninitialized when used here [-Wuninitialized] i, liodn); ^ include/linux/printk.h:424:26: note: expanded from macro 'pr_debug' dynamic_pr_debug(fmt, ##__VA_ARGS__) ^~~~~~~~~~~ include/linux/dynamic_debug.h:158:22: note: expanded from macro 'dynamic_pr_debug' pr_fmt(fmt), ##__VA_ARGS__) ^~~~~~~~~~~ include/linux/dynamic_debug.h:147:56: note: expanded from macro '_dynamic_func_call' __dynamic_func_call(__UNIQUE_ID(ddebug), fmt, func, ##__VA_ARGS__) ^~~~~~~~~~~ include/linux/dynamic_debug.h:129:15: note: expanded from macro '__dynamic_func_call' func(&id, ##__VA_ARGS__); \ ^~~~~~~~~~~ drivers/iommu/fsl_pamu_domain.c:122:16: note: initialize the variable 'i' to silence this warning int ret = 0, i; ^ = 0 1 warning generated. vim +/i +129 drivers/iommu/fsl_pamu_domain.c 695093e38c3ef6 Varun Sethi 2013-07-15 118 695093e38c3ef6 Varun Sethi 2013-07-15 119 static int update_liodn_stash(int liodn, struct fsl_dma_domain *dma_domain, 695093e38c3ef6 Varun Sethi 2013-07-15 120 u32 val) 695093e38c3ef6 Varun Sethi 2013-07-15 121 { 695093e38c3ef6 Varun Sethi 2013-07-15 122 int ret = 0, i; 695093e38c3ef6 Varun Sethi 2013-07-15 123 unsigned long flags; 695093e38c3ef6 Varun Sethi 2013-07-15 124 695093e38c3ef6 Varun Sethi 2013-07-15 125 spin_lock_irqsave(&iommu_lock, flags); ba58d1216e2b2d Christoph Hellwig 2021-04-01 126 ret = pamu_update_paace_stash(liodn, val); 695093e38c3ef6 Varun Sethi 2013-07-15 127 if (ret) { cd70d4659ff3ab Emil Medve 2015-01-28 128 pr_debug("Failed to update SPAACE %d field for liodn %d\n ", cd70d4659ff3ab Emil Medve 2015-01-28 @129 i, liodn); 695093e38c3ef6 Varun Sethi 2013-07-15 130 spin_unlock_irqrestore(&iommu_lock, flags); 695093e38c3ef6 Varun Sethi 2013-07-15 131 return ret; 695093e38c3ef6 Varun Sethi 2013-07-15 132 } 695093e38c3ef6 Varun Sethi 2013-07-15 133 695093e38c3ef6 Varun Sethi 2013-07-15 134 spin_unlock_irqrestore(&iommu_lock, flags); 695093e38c3ef6 Varun Sethi 2013-07-15 135 695093e38c3ef6 Varun Sethi 2013-07-15 136 return ret; 695093e38c3ef6 Varun Sethi 2013-07-15 137 } 695093e38c3ef6 Varun Sethi 2013-07-15 138 :::::: The code at line 129 was first introduced by commit :::::: cd70d4659ff3ab7e25b29a6f70be5bcfd078db1f iommu/fsl: Various cleanups :::::: TO: Emil Medve <Emilian.Medve@xxxxxxxxxxxxx> :::::: CC: Joerg Roedel <jroedel@xxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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