[rust:pr/1208 3/17] warning: missing documentation for a method

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/Rust-for-Linux/linux pr/1208
head:   9bba107357a10d7bc2b6d669bfecb41e498bbb5d
commit: 21818fd952201cc98f35bb826c82e33895c430e9 [3/17] setup fs modules
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20251125/202511250859.erL9glB0-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/20251125/202511250859.erL9glB0-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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511250859.erL9glB0-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> warning: missing documentation for a method
   --> rust/kernel/fs.rs:56:5
   |
   56 |     pub fn register<T: Type + ?Sized>(self: Pin<&mut Self>, module: &'static ThisModule) -> Result {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: requested on the command line with `-W missing-docs`

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