Hi Artem,

kernel test robot noticed the following build errors:

[auto build test ERROR on rust/rust-next]
[also build test ERROR on linus/master v7.0-rc5 next-20260323]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Artem-Lytkin/rust-phy-add-paged-register-access-and-bit-manipulation-helpers/20260324-155532
base:   https://github.com/Rust-for-Linux/linux rust-next
patch link:    https://lore.kernel.org/r/20260323201925.8405-2-iprintercanon%40gmail.com
patch subject: [PATCH 2/4] rust: phy: add paged register access and bit manipulation helpers
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20260324/202603241502.8mYbVohd-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/20260324/202603241502.8mYbVohd-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/202603241502.8mYbVohd-lkp@intel.com/ (local)

All errors (new ones prefixed by >>):

   PATH=/opt/cross/clang-20/bin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
   INFO PATH=/opt/cross/rustc-1.88.0-bindgen-0.72.1/cargo/bin:/opt/cross/clang-20/bin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
   /usr/bin/timeout -k 100 12h /usr/bin/make KCFLAGS=\ -fno-crash-diagnostics\ -Wno-error=return-type\ -Wreturn-type\ -funsigned-char\ -Wundef\ -falign-functions=64 W=1 --keep-going LLVM=1 -j32 -C source O=/kbuild/obj/consumer/x86_64-rhel-9.4-rust ARCH=x86_64 SHELL=/bin/bash rustfmtcheck 
   make: Entering directory '/kbuild/src/consumer'
   make[1]: Entering directory '/kbuild/obj/consumer/x86_64-rhel-9.4-rust'

quoted

Diff in rust/kernel/net/phy.rs:246:

            let phydev = self.0.get();
            // SAFETY: `phydev` is pointing to a valid object by the type invariant of `Self`.
            // So it's just an FFI call.
   -        let ret =
   -            unsafe { bindings::phy_write_paged(phydev, page.into(), regnum.into(), val) };
   +        let ret = unsafe { bindings::phy_write_paged(phydev, page.into(), regnum.into(), val) };
    
            to_result(ret)
        }

quoted

Diff in rust/kernel/net/phy.rs:246:

            let phydev = self.0.get();
            // SAFETY: `phydev` is pointing to a valid object by the type invariant of `Self`.
            // So it's just an FFI call.
   -        let ret =
   -            unsafe { bindings::phy_write_paged(phydev, page.into(), regnum.into(), val) };
   +        let ret = unsafe { bindings::phy_write_paged(phydev, page.into(), regnum.into(), val) };
    
            to_result(ret)
        }

quoted

Diff in rust/kernel/net/phy.rs:246:

            let phydev = self.0.get();
            // SAFETY: `phydev` is pointing to a valid object by the type invariant of `Self`.
            // So it's just an FFI call.
   -        let ret =
   -            unsafe { bindings::phy_write_paged(phydev, page.into(), regnum.into(), val) };
   +        let ret = unsafe { bindings::phy_write_paged(phydev, page.into(), regnum.into(), val) };
    
            to_result(ret)
        }
   make[2]: *** [Makefile:1912: rustfmt] Error 123
   make[2]: Target 'rustfmtcheck' not remade because of errors.
   make[1]: Leaving directory '/kbuild/obj/consumer/x86_64-rhel-9.4-rust'
   make[1]: *** [Makefile:248: __sub-make] Error 2
   make[1]: Target 'rustfmtcheck' not remade because of errors.
   make: *** [Makefile:248: __sub-make] Error 2
   make: Target 'rustfmtcheck' not remade because of errors.
   make: Leaving directory '/kbuild/src/consumer'

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