`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: 746680ec6696 ("rust: irq: add flags module") Reviewed-by: Daniel Almeida daniel.almeida@collabora.com Signed-off-by: Alexandre Courbot acourbot@nvidia.com --- rust/kernel/irq/flags.rs | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/rust/kernel/irq/flags.rs b/rust/kernel/irq/flags.rs index adfde96ec47c..d26e25af06ee 100644 --- a/rust/kernel/irq/flags.rs +++ b/rust/kernel/irq/flags.rs @@ -96,6 +96,8 @@ pub(crate) fn into_inner(self) -> c_ulong { self.0 }
+ // Always inline to optimize out error path of `build_assert`. + #[inline(always)] const fn new(value: u32) -> Self { build_assert!(value as u64 <= c_ulong::MAX as u64); Self(value as c_ulong)