[GIT PULL] Rust fixes for 7.2 (2nd)

[Miguel Ojeda]

Hi Linus,

Please pull these fixes for Rust.

They have been in linux-next for at least four rounds (most for more
than a week).

No conflicts expected.

Thanks!

Cheers,
Miguel

The following changes since commit dc59e4fea9d83f03bad6bddf3fa2e52491777482:

  Linux 7.2-rc1 (2026-06-28 12:01:31 -0700)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux.git tags/rust-fixes-7.2-2

for you to fetch changes up to 880c43b185ca52239e75bc546cc4f4d9154d0fed:

  rust: time: fix as_micros_ceil() to round correctly for negative Delta (2026-07-18 19:07:35 +0200)

----------------------------------------------------------------
Rust fixes for v7.2 (2nd)

Toolchain and infrastructure:

 - 'zerocopy' crates: update to v0.8.54 to fix a modpost error under
   'CONFIG_CC_OPTIMIZE_FOR_SIZE=y'.

   There are actually two updates in the PR: the one to v0.8.52 is
   fairly large and was originally not intended for a fixes PR, but the
   actual fix landed in the v0.8.54 one. Thus I included both here.

   The v0.8.52 update includes two things upstream added for us:
   '--cfg no_fp_fmt_parse' to avoid a local workaround, and the new
   'most_traits' feature.

   The good news is that, after these updates, the delta with upstream
   is now trivial: only an identifier prefix change and the SPDX
   parentheses.

 - Fix an objtool warning by adding one more 'noreturn' function for
   Rust 1.99.0 (expected 2026-10-01).

 - Clean up new 'semicolon_in_expressions_from_macros' lint errors for
   Rust 1.99.0 (expected 2026-10-01). The lint can be allowed, but it
   will be a hard error at some point in the future anyway, so clean it
   up now.

 - Locally allow new 'suspicious_runtime_symbol_definitions' lint for
   Rust 1.98.0 (expected 2026-08-20).

 - Globally allow 'clippy::unwrap_or_default' lint since it relies on
   optimizations -- under 'CONFIG_CC_OPTIMIZE_FOR_SIZE=y' it does not
   work well.

'kernel' crate:

 - 'time' module: fix 'Delta::as_micros_ceil()' to round negative values
   correctly.

----------------------------------------------------------------
Alexandre Courbot (1):
      rust: allow `clippy::unwrap_or_default` globally

Alice Ryhl (1):
      rust: device: avoid trailing ; in printing macros

FUJITA Tomonori (1):
      rust: time: fix as_micros_ceil() to round correctly for negative Delta

Miguel Ojeda (4):
      rust: allow `suspicious_runtime_symbol_definitions` lint for Rust >= 1.98
      rust: zerocopy: update to v0.8.52
      rust: zerocopy: update to v0.8.54
      objtool/rust: add one more `noreturn` Rust function for Rust 1.99.0

 Makefile                                      |  5 +++
 init/Kconfig                                  |  3 ++
 rust/Makefile                                 | 16 +++++++--
 rust/bindings/lib.rs                          |  4 +++
 rust/kernel/device.rs                         | 20 +++++------
 rust/kernel/time.rs                           | 11 ++++--
 rust/uapi/lib.rs                              |  4 +++
 rust/zerocopy-derive/README.md                | 14 ++++----
 rust/zerocopy-derive/derive/from_bytes.rs     |  2 +-
 rust/zerocopy-derive/derive/into_bytes.rs     |  2 +-
 rust/zerocopy-derive/derive/known_layout.rs   |  3 +-
 rust/zerocopy-derive/derive/mod.rs            | 20 ++++++-----
 rust/zerocopy-derive/derive/try_from_bytes.rs |  6 ++--
 rust/zerocopy-derive/derive/unaligned.rs      |  2 +-
 rust/zerocopy-derive/lib.rs                   | 36 ++++++++++++++++++-
 rust/zerocopy-derive/repr.rs                  |  2 +-
 rust/zerocopy-derive/util.rs                  | 34 +++++++++++++-----
 rust/zerocopy/README.md                       | 15 ++++----
 rust/zerocopy/rustdoc/style.css               |  1 -
 rust/zerocopy/src/byte_slice.rs               |  2 +-
 rust/zerocopy/src/byteorder.rs                | 50 ++++++++++++++++++++++-----
 rust/zerocopy/src/deprecated.rs               |  2 +-
 rust/zerocopy/src/error.rs                    |  2 +-
 rust/zerocopy/src/impls.rs                    |  4 +--
 rust/zerocopy/src/layout.rs                   |  4 ++-
 rust/zerocopy/src/lib.rs                      | 12 ++++---
 rust/zerocopy/src/macros.rs                   |  2 +-
 rust/zerocopy/src/pointer/inner.rs            |  2 +-
 rust/zerocopy/src/pointer/invariant.rs        |  2 +-
 rust/zerocopy/src/pointer/mod.rs              |  2 +-
 rust/zerocopy/src/pointer/ptr.rs              |  2 +-
 rust/zerocopy/src/pointer/transmute.rs        |  2 +-
 rust/zerocopy/src/ref.rs                      |  2 +-
 rust/zerocopy/src/split_at.rs                 |  2 +-
 rust/zerocopy/src/util/macro_util.rs          |  2 +-
 rust/zerocopy/src/util/macros.rs              |  2 +-
 rust/zerocopy/src/util/mod.rs                 |  8 ++++-
 rust/zerocopy/src/wrappers.rs                 |  2 +-
 tools/objtool/check.c                         |  1 +
 39 files changed, 217 insertions(+), 90 deletions(-)