@@ -147,30 +147,32 @@ pub trait Adapter {
/// Returns the driver's private data from the matching entry in the [`of::IdTable`], if any.
///
/// If this returns `None`, it means there is no match with an entry in the [`of::IdTable`].
- #[cfg(CONFIG_OF)]
fn of_id_info(dev: &device::Device) -> Option<&'static Self::IdInfo> {
- let table = Self::of_id_table()?;
+ #[cfg(not(CONFIG_OF))]
+ {
+ let _ = dev;
+ return None;
+ }
- // SAFETY:
- // - `table` has static lifetime, hence it's valid for read,
- // - `dev` is guaranteed to be valid while it's alive, and so is `pdev.as_ref().as_raw()`.
- let raw_id = unsafe { bindings::of_match_device(table.as_ptr(), dev.as_raw()) };
+ #[cfg(CONFIG_OF)]
+ {
+ let table = Self::of_id_table()?;
- if raw_id.is_null() {
- None
- } else {
- // SAFETY: `DeviceId` is a `#[repr(transparent)` wrapper of `struct of_device_id` and
- // does not add additional invariants, so it's safe to transmute.
- let id = unsafe { &*raw_id.cast::<of::DeviceId>() };
+ // SAFETY:
+ // - `table` has static lifetime, hence it's valid for read,
+ // - `dev` is guaranteed to be valid while it's alive, and so is `pdev.as_ref().as_raw()`.
+ let raw_id = unsafe { bindings::of_match_device(table.as_ptr(), dev.as_raw()) };
- Some(table.info(<of::DeviceId as crate::device_id::RawDeviceId>::index(id)))
- }
- }
+ if raw_id.is_null() {
+ None
+ } else {
+ // SAFETY: `DeviceId` is a `#[repr(transparent)` wrapper of `struct of_device_id` and
+ // does not add additional invariants, so it's safe to transmute.
+ let id = unsafe { &*raw_id.cast::<of::DeviceId>() };
- #[cfg(not(CONFIG_OF))]
- #[allow(missing_docs)]
- fn of_id_info(_dev: &device::Device) -> Option<&'static Self::IdInfo> {
- None
+ Some(table.info(<of::DeviceId as crate::device_id::RawDeviceId>::index(id)))
+ }
+ }
}
/// Returns the driver's private data from the matching entry of any of the ID tables, if any.
Refactor the `of_id_info` methods in the `Adapter` trait to reduce duplication. Previously, the method had two versions selected via `#[cfg(...)]` and `#[cfg(not(...))]`. This change merges them into a single method by using `#[cfg]` blocks within the method body. Suggested-by: Benno Lossin <lossin@kernel.org> Signed-off-by: Igor Korotin <igor.korotin.linux@gmail.com> --- rust/kernel/driver.rs | 40 +++++++++++++++++++++------------------- 1 file changed, 21 insertions(+), 19 deletions(-)