Hi Alec, kernel test robot noticed the following build warnings:
[auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on char-misc/char-misc-next char-misc/char-misc-linus linus/master v7.0-rc4 next-20260320] [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/Alec-Brown/tpm-Initial-step-to-reorganize-TPM-public-headers/20260322-021741 base: char-misc/char-misc-testing patch link: https://lore.kernel.org/r/20260317160613.2899129-5-alec.r.brown%40oracle.com patch subject: [PATCH 4/4] tpm: Move TPM common base definitions to the command header config: arm-randconfig-r132-20260322 (https://download.01.org/0day-ci/archive/20260322/[email protected]/config) compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 4abb927bacf37f18f6359a41639a6d1b3bffffb5) sparse: v0.6.5-rc1 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260322/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): In file included from drivers/char/tpm/tpm-dev-common.c:19: In file included from drivers/char/tpm/tpm.h:29: include/linux/tpm_eventlog.h:167:6: warning: variable 'mapping_size' set but not used [-Wunused-but-set-variable] 167 | int mapping_size; | ^ In file included from drivers/char/tpm/tpm-dev-common.c:19: In file included from drivers/char/tpm/tpm.h:28: In file included from include/linux/tpm.h:28: >> include/linux/tpm_command.h:517:2: warning: field within 'struct >> tpm_header' is less aligned than 'union tpm_header::(anonymous at >> include/linux/tpm_command.h:517:2)' and is usually due to 'struct >> tpm_header' being packed, which can lead to unaligned accesses >> [-Wunaligned-access] 517 | union { | ^ 2 warnings generated. -- In file included from drivers/char/tpm/tpm-buf.c:7: In file included from include/linux/tpm.h:28: >> include/linux/tpm_command.h:517:2: warning: field within 'struct >> tpm_header' is less aligned than 'union tpm_header::(anonymous at >> include/linux/tpm_command.h:517:2)' and is usually due to 'struct >> tpm_header' being packed, which can lead to unaligned accesses >> [-Wunaligned-access] 517 | union { | ^ 1 warning generated. vim +517 include/linux/tpm_command.h 513 514 struct tpm_header { 515 __be16 tag; 516 __be32 length; > 517 union { 518 __be32 ordinal; 519 __be32 return_code; 520 }; 521 } __packed; 522 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
