`build_assert` relies on the compiler to optimize out its error path. Functions using it with its arguments must thus always be inlined, otherwise the error path of `build_assert` might not be optimized out, triggering a build error.
Cc: stable@vger.kernel.org Fixes: c6af9a1191d0 ("rust: cpufreq: Extend abstractions for driver registration") Acked-by: Viresh Kumar viresh.kumar@linaro.org Reviewed-by: Daniel Almeida daniel.almeida@collabora.com Signed-off-by: Alexandre Courbot acourbot@nvidia.com --- rust/kernel/cpufreq.rs | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/rust/kernel/cpufreq.rs b/rust/kernel/cpufreq.rs index f968fbd22890..0879a79485f8 100644 --- a/rust/kernel/cpufreq.rs +++ b/rust/kernel/cpufreq.rs @@ -1015,6 +1015,8 @@ impl<T: Driver> Registration<T> { ..pin_init::zeroed() };
+ // Always inline to optimize out error path of `build_assert`. + #[inline(always)] const fn copy_name(name: &'static CStr) -> [c_char; CPUFREQ_NAME_LEN] { let src = name.to_bytes_with_nul(); let mut dst = [0; CPUFREQ_NAME_LEN];