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rust: impl_flags: use bit helper in example

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Use bit_u32() instead of open-coding shifts in the impl_flags! example.
This demonstrates the checked bit helper and ensures that bit positions
remain within the underlying u32 type.

Suggested-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://github.com/Rust-for-Linux/linux/issues/1244
Assisted-by: OpenCode:openai/gpt-5.6-sol
Signed-off-by: Kosumi Chan <chankocyo@gmail.com>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/rust-for-linux/2026071054-hazing-antirust-8e40@gregkh/
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://patch.msgid.link/20260711082327.3062227-1-chankocyo@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
This commit is contained in:
Kosumi Chan 2026-07-11 04:23:27 -04:00 committed by Miguel Ojeda
parent 168b4f9aa5
commit 39a309f432
1 changed files with 7 additions and 4 deletions
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11
rust/kernel/impl_flags.rs
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@ -19,7 +19,10 @@
/// # Examples
///
/// ```
/// use kernel::impl_flags;
/// use kernel::{
/// bits::bit_u32,
/// impl_flags, //
/// };
///
/// impl_flags!(
/// /// Represents multiple permissions.
@ -30,13 +33,13 @@
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// pub enum Permission {
/// /// Read permission.
/// Read = 1 << 0,
/// Read = bit_u32(0),
///
/// /// Write permission.
/// Write = 1 << 1,
/// Write = bit_u32(1),
///
/// /// Execute permission.
/// Execute = 1 << 2,
/// Execute = bit_u32(2),
/// }
/// );
///