linux-kernel - [jgunthorpe:vfio_iommufd 3/20] drivers/iommu/iommufd/io_pagetable.c:309:5: warning: no previous prototype for function 'iopt_fill_domains

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Message-ID: <202210172049.I6l8n6hA-lkp@intel.com>
Date:   Mon, 17 Oct 2022 20:58:33 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jason Gunthorpe <jgg@...dia.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Yi Liu <yi.l.liu@...el.com>,
        Nicolin Chen <nicolinc@...dia.com>
Subject: [jgunthorpe:vfio_iommufd 3/20]
 drivers/iommu/iommufd/io_pagetable.c:309:5: warning: no previous prototype
 for function 'iopt_fill_domains_pages'

tree:   https://github.com/jgunthorpe/linux vfio_iommufd
head:   f44b706a4413f17e50f20999964b38d11ef84d98
commit: 7cdc995f9b8ed4bbf2e63095ccf5985c2700a532 [3/20] iommufd: Data structure to provide IOVA to PFN mapping
config: arm64-allyesconfig
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/jgunthorpe/linux/commit/7cdc995f9b8ed4bbf2e63095ccf5985c2700a532
        git remote add jgunthorpe https://github.com/jgunthorpe/linux
        git fetch --no-tags jgunthorpe vfio_iommufd
        git checkout 7cdc995f9b8ed4bbf2e63095ccf5985c2700a532
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/iommu/iommufd/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/iommu/iommufd/io_pagetable.c:309:5: warning: no previous prototype for function 'iopt_fill_domains_pages' [-Wmissing-prototypes]
   int iopt_fill_domains_pages(struct list_head *pages_list)
       ^
   drivers/iommu/iommufd/io_pagetable.c:309:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int iopt_fill_domains_pages(struct list_head *pages_list)
   ^
   static 
   1 warning generated.


vim +/iopt_fill_domains_pages +309 drivers/iommu/iommufd/io_pagetable.c

   308	
 > 309	int iopt_fill_domains_pages(struct list_head *pages_list)
   310	{
   311		struct iopt_pages_list *undo_elm;
   312		struct iopt_pages_list *elm;
   313		int rc;
   314	
   315		list_for_each_entry(elm, pages_list, next) {
   316			rc = iopt_area_fill_domains(elm->area, elm->pages);
   317			if (rc)
   318				goto err_undo;
   319		}
   320		return 0;
   321	
   322	err_undo:
   323		list_for_each_entry(undo_elm, pages_list, next) {
   324			if (undo_elm == elm)
   325				break;
   326			iopt_area_unfill_domains(undo_elm->area, undo_elm->pages);
   327		}
   328		return rc;
   329	}
   330	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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