netdev - [mst-vhost:vhost 43/52] drivers/vhost/vdpa.c:68:13: warning: 'vhost_vdpa_iotlb

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Date:   Mon, 19 Dec 2022 20:42:30 +0800
From:   kernel test robot <lkp@...el.com>
To:     Cindy Lu <lulu@...hat.com>
Cc:     oe-kbuild-all@...ts.linux.dev, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        "Michael S. Tsirkin" <mst@...hat.com>
Subject: [mst-vhost:vhost 43/52] drivers/vhost/vdpa.c:68:13: warning:
 'vhost_vdpa_iotlb_unmap' used but never defined

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost
head:   ebf31b1807d09448f902d02a0267dd344a194368
commit: 881ac7d2314fc9d236f0ca0a7edaab582b7f6f13 [43/52] vhost_vdpa: fix the crash in unmap a large memory
config: m68k-allyesconfig
compiler: m68k-linux-gcc (GCC) 12.1.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?id=881ac7d2314fc9d236f0ca0a7edaab582b7f6f13
        git remote add mst-vhost https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git
        git fetch --no-tags mst-vhost vhost
        git checkout 881ac7d2314fc9d236f0ca0a7edaab582b7f6f13
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/vdpa/ drivers/vhost/

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/vhost/vdpa.c:740:13: error: conflicting types for 'vhost_vdpa_iotlb_unmap'; have 'void(struct vhost_vdpa *, struct vhost_iotlb *, u64,  u64,  u32)' {aka 'void(struct vhost_vdpa *, struct vhost_iotlb *, long long unsigned int,  long long unsigned int,  unsigned int)'}
     740 | static void vhost_vdpa_iotlb_unmap(struct vhost_vdpa *v,
         |             ^~~~~~~~~~~~~~~~~~~~~~
   drivers/vhost/vdpa.c:68:13: note: previous declaration of 'vhost_vdpa_iotlb_unmap' with type 'void(struct vhost_vdpa *, struct vhost_iotlb *, u64,  u64)' {aka 'void(struct vhost_vdpa *, struct vhost_iotlb *, long long unsigned int,  long long unsigned int)'}
      68 | static void vhost_vdpa_iotlb_unmap(struct vhost_vdpa *v,
         |             ^~~~~~~~~~~~~~~~~~~~~~
>> drivers/vhost/vdpa.c:68:13: warning: 'vhost_vdpa_iotlb_unmap' used but never defined


vim +/vhost_vdpa_iotlb_unmap +68 drivers/vhost/vdpa.c

4c8cf31885f69e Tiwei Bie          2020-03-26  67  
62101d7d9451c1 Stefano Garzarella 2022-11-09 @68  static void vhost_vdpa_iotlb_unmap(struct vhost_vdpa *v,
62101d7d9451c1 Stefano Garzarella 2022-11-09  69  				   struct vhost_iotlb *iotlb,
62101d7d9451c1 Stefano Garzarella 2022-11-09  70  				   u64 start, u64 last);
62101d7d9451c1 Stefano Garzarella 2022-11-09  71  

:::::: The code at line 68 was first introduced by commit
:::::: 62101d7d9451c11cec455181421a8a689f007cc8 vhost-vdpa: fix an iotlb memory leak

:::::: TO: Stefano Garzarella <sgarzare@...hat.com>
:::::: CC: Michael S. Tsirkin <mst@...hat.com>

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

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