[leon-rdma:rxe-rust-v1 61/88] warning: use of a disallowed method `core::ffi::CStr::as_ptr`

[leon-rdma:rxe-rust-v1 61/88] warning: use of a disallowed method `core::ffi::CStr::as_ptr`

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git rxe-rust-v1
head:   fe52737deab42b438e356282106b9418915da058
commit: 6a8249571db884afbc188c60b5a59a86c727ae45 [61/88] rust: rdma: Own pinned provider data across device callbacks
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20261013/202610130159.ZWMsCiIl-lkp@intel.com/config)
compiler: clang version 22.1.8 (https://github.com/llvm/llvm-project ca7933e47d3a3451d81e72ac174dcb5aa28b59d1)
rustc: rustc 1.96.0 (ac68faa20 2026-05-25)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261013/202610130159.ZWMsCiIl-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/202610130159.ZWMsCiIl-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> warning: casting to the same type is unnecessary (`u32` -> `u32`)
   --> rust/kernel/rdma/capabilities.rs:144:16
   |
   144 |         Send = bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_SEND as u32,
   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_SEND`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.96.0/index.html#unnecessary_cast
   = note: `-W clippy::unnecessary-cast` implied by `-W clippy::all`
   = help: to override `-W clippy::all` add `#[allow(clippy::unnecessary_cast)]`
--
>> warning: casting to the same type is unnecessary (`u32` -> `u32`)
   --> rust/kernel/rdma/capabilities.rs:146:19
   |
   146 |         Receive = bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_RECV as u32,
   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_RECV`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.96.0/index.html#unnecessary_cast
--
>> warning: casting to the same type is unnecessary (`u32` -> `u32`)
   --> rust/kernel/rdma/capabilities.rs:148:17
   |
   148 |         Write = bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_WRITE as u32,
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_WRITE`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.96.0/index.html#unnecessary_cast
--
>> warning: casting to the same type is unnecessary (`u32` -> `u32`)
   --> rust/kernel/rdma/capabilities.rs:150:16
   |
   150 |         Read = bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_READ as u32,
   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_READ`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.96.0/index.html#unnecessary_cast
--
>> warning: casting to the same type is unnecessary (`u32` -> `u32`)
   --> rust/kernel/rdma/capabilities.rs:152:18
   |
   152 |         Atomic = bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_ATOMIC as u32,
   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_ATOMIC`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.96.0/index.html#unnecessary_cast
--
>> warning: casting to the same type is unnecessary (`u32` -> `u32`)
   --> rust/kernel/rdma/capabilities.rs:154:22
   |
   154 |         SrqReceive = bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_SRQ_RECV as u32,
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_SRQ_RECV`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.96.0/index.html#unnecessary_cast
--
>> warning: casting to the same type is unnecessary (`u32` -> `u32`)
   --> rust/kernel/rdma/capabilities.rs:156:17
   |
   156 |         Flush = bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_FLUSH as u32,
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_FLUSH`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.96.0/index.html#unnecessary_cast
--
>> warning: casting to the same type is unnecessary (`u32` -> `u32`)
   --> rust/kernel/rdma/capabilities.rs:158:23
   |
   158 |         AtomicWrite = bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_ATOMIC_WRITE as u32,
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `bindings::ib_odp_transport_cap_bits_IB_ODP_SUPPORT_ATOMIC_WRITE`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.96.0/index.html#unnecessary_cast
--
>> warning: name `PROVIDERS` contains a capitalized acronym
   --> rust/kernel/rdma/registry.rs:14:27
   |
   14 |     unsafe(uninit) static PROVIDERS: SpinLockIrq<Option<RBTree<usize, TypeId>>> = None;
   |                           ^^^^^^^^^ help: consider making the acronym lowercase, except the initial letter: `Providers`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.96.0/index.html#upper_case_acronyms
--
>> warning: casting to the same type is unnecessary (`u8` -> `u8`)
   --> rust/kernel/rdma/modification.rs:42:65
   |
   42 |                     .then(|| (*attributes).node_desc.map(|byte| byte as u8)),
   |                                                                 ^^^^^^^^^^ help: try: `byte`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.96.0/index.html#unnecessary_cast
--
>> warning: use of a disallowed method `core::ffi::CStr::as_ptr`
   --> rust/kernel/rdma/statistics.rs:40:52
   |
   40 |             descriptors[index].name = names[index].as_ptr().cast();
   |                                                    ^^^^^^ help: kernel's `char` is always unsigned, use `as_char_ptr` instead: `kernel::prelude::CStrExt::as_char_ptr`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.96.0/index.html#disallowed_methods
   = note: `-W clippy::disallowed-methods` implied by `-W clippy::all`
   = help: to override `-W clippy::all` add `#[allow(clippy::disallowed_methods)]`
..

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