linux-kernel - [jgunthorpe:iommufd 3/14] drivers/iommu/iommufd/main.c:277: warning: expecting prototype for iommufd_ctxet(). Prototype was for iommufd_ctx

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Message-ID: <202208201532.7dK1NH9N-lkp@intel.com>
Date:   Sat, 20 Aug 2022 15:21:14 +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>
Subject: [jgunthorpe:iommufd 3/14] drivers/iommu/iommufd/main.c:277: warning:
 expecting prototype for iommufd_ctxet(). Prototype was for iommufd_ctx_get()
 instead

tree:   https://github.com/jgunthorpe/linux iommufd
head:   6624f48e554fe6a880b261074a1c9580dc9b5384
commit: a9a0de926a33cae4290bff0c0d7a0006fd1fd5a7 [3/14] iommufd: File descriptor, context, kconfig and makefiles
config: s390-randconfig-r035-20220820 (https://download.01.org/0day-ci/archive/20220820/202208201532.7dK1NH9N-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 0ac597f3cacf60479ffd36b03766fa7462dabd78)
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 s390 cross compiling tool for clang build
        # apt-get install binutils-s390x-linux-gnu
        # https://github.com/jgunthorpe/linux/commit/a9a0de926a33cae4290bff0c0d7a0006fd1fd5a7
        git remote add jgunthorpe https://github.com/jgunthorpe/linux
        git fetch --no-tags jgunthorpe iommufd
        git checkout a9a0de926a33cae4290bff0c0d7a0006fd1fd5a7
        # 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=s390 SHELL=/bin/bash

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/main.c:277: warning: Function parameter or member 'ictx' not described in 'iommufd_ctx_get'
>> drivers/iommu/iommufd/main.c:277: warning: expecting prototype for iommufd_ctxet(). Prototype was for iommufd_ctx_get() instead
   drivers/iommu/iommufd/main.c:307: warning: Function parameter or member 'ictx' not described in 'iommufd_ctx_put'


vim +277 drivers/iommu/iommufd/main.c

   269	
   270	/**
   271	 * iommufd_ctxet - Get a context reference
   272	 * @ictx - Context to get
   273	 *
   274	 * The caller must already hold a valid reference to ictx.
   275	 */
   276	void iommufd_ctx_get(struct iommufd_ctx *ictx)
 > 277	{
   278		get_file(ictx->file);
   279	}
   280	EXPORT_SYMBOL_GPL(iommufd_ctx_get);
   281	

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