[asahilinux:asahi-wip 824/987] warning: method `into_raw` is never used

tree:   https://github.com/AsahiLinux/linux asahi-wip
head:   0fcda52c969c6fe276e3f63f02438233ca592077
commit: 0478f42cdb343787e247a07f23e58ec516f8dacf [824/987] rust: dma_fence: Add DMA Fence abstraction
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20250805/202508050918.u49nln1Z-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250805/202508050918.u49nln1Z-lkp@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 [off-list ref]
| Closes: https://lore.kernel.org/oe-kbuild-all/202508050918.u49nln1Z-lkp@intel.com/ (local)

All warnings (new ones prefixed by >>):

quoted

warning: method `into_raw` is never used

   --> rust/kernel/dma_fence.rs:470:19
   |
   454 | impl FenceChain {
   | --------------- method in this implementation
   ...
   470 |     pub(crate) fn into_raw(self) -> *mut bindings::dma_fence_chain {
   |                   ^^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

-- 
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