Hi Haren, kernel test robot noticed the following build warnings:
[auto build test WARNING on powerpc/next] [also build test WARNING on powerpc/fixes v6.16] [cannot apply to linus/master next-20250801] [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/Haren-Myneni/powerpc-pseries-Define-papr-hvpipe-ioctl/20250802-104715 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next patch link: https://lore.kernel.org/r/20250802024121.955274-9-haren%40linux.ibm.com patch subject: [PATCH 8/9] powerpc/pseries: Enable hvpipe with ibm,set-system-parameter RTAS config: powerpc64-randconfig-001-20250803 (https://download.01.org/0day-ci/archive/20250803/202508030602.trsvgpjd-...@intel.com/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250803/202508030602.trsvgpjd-...@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 <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202508030602.trsvgpjd-...@intel.com/ All warnings (new ones prefixed by >>): arch/powerpc/platforms/pseries/papr-hvpipe.c:725:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] 725 | if (!enable_hvpipe_IRQ() && !set_hvpipe_sys_param(1)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/platforms/pseries/papr-hvpipe.c:737:9: note: uninitialized use occurs here 737 | return ret; | ^~~ arch/powerpc/platforms/pseries/papr-hvpipe.c:725:2: note: remove the 'if' if its condition is always true 725 | if (!enable_hvpipe_IRQ() && !set_hvpipe_sys_param(1)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> arch/powerpc/platforms/pseries/papr-hvpipe.c:725:6: warning: variable 'ret' >> is used uninitialized whenever '&&' condition is false >> [-Wsometimes-uninitialized] 725 | if (!enable_hvpipe_IRQ() && !set_hvpipe_sys_param(1)) { | ^~~~~~~~~~~~~~~~~~~~ arch/powerpc/platforms/pseries/papr-hvpipe.c:737:9: note: uninitialized use occurs here 737 | return ret; | ^~~ arch/powerpc/platforms/pseries/papr-hvpipe.c:725:6: note: remove the '&&' if its condition is always true 725 | if (!enable_hvpipe_IRQ() && !set_hvpipe_sys_param(1)) { | ^~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/platforms/pseries/papr-hvpipe.c:703:9: note: initialize the variable 'ret' to silence this warning 703 | int ret; | ^ | = 0 2 warnings generated. vim +725 arch/powerpc/platforms/pseries/papr-hvpipe.c 700 701 static int __init papr_hvpipe_init(void) 702 { 703 int ret; 704 705 if (!of_find_property(rtas.dev, "ibm,hypervisor-pipe-capable", 706 NULL)) 707 return -ENODEV; 708 709 if (!rtas_function_implemented(RTAS_FN_IBM_SEND_HVPIPE_MSG) || 710 !rtas_function_implemented(RTAS_FN_IBM_RECEIVE_HVPIPE_MSG)) 711 return -ENODEV; 712 713 papr_hvpipe_work = kzalloc(sizeof(struct work_struct), GFP_ATOMIC); 714 if (!papr_hvpipe_work) 715 return -ENOMEM; 716 717 INIT_WORK(papr_hvpipe_work, papr_hvpipe_work_fn); 718 719 papr_hvpipe_wq = alloc_ordered_workqueue("papr hvpipe workqueue", 0); 720 if (!papr_hvpipe_wq) { 721 ret = -ENOMEM; 722 goto out; 723 } 724 > 725 if (!enable_hvpipe_IRQ() && !set_hvpipe_sys_param(1)) { -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
