[asahilinux:bits/210-gpu 89/225] warning: associated function `into_raw` is never used

[asahilinux:bits/210-gpu 89/225] warning: associated function `into_raw` is never used

[kernel test robot]

tree:   https://github.com/AsahiLinux/linux bits/210-gpu
head:   088cf4cc64f4e0eec3c9b99e36c9f5e9a86b1173
commit: 29b0bf0eed1a1011e729d34508c82aa3fb406500 [89/225] rust: dma_fence: Add DMA Fence abstraction
config: x86_64-randconfig-x061-20230606 (https://download.01.org/0day-ci/archive/20230608/202306081708.R2L4ylXV-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce (this is a W=1 build):
        mkdir -p ~/bin
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/AsahiLinux/linux/commit/29b0bf0eed1a1011e729d34508c82aa3fb406500
        git remote add asahilinux https://github.com/AsahiLinux/linux
        git fetch --no-tags asahilinux bits/210-gpu
        git checkout 29b0bf0eed1a1011e729d34508c82aa3fb406500
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=x86_64 prepare

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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306081708.R2L4ylXV-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> warning: associated function `into_raw` is never used
   --> rust/kernel/dma_fence.rs:520:19
   |
   520 |     pub(crate) fn into_raw(self) -> *mut bindings::dma_fence_chain {
   |                   ^^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki