[libgpiod][PATCH v2 2/4] bindings: rust: clippy: silence false-positives on casts

[Erik Schilling <erik.schilling@linaro.org>]

clippy falsely complains about these lines. The problem is known, but
unfixed [1]. So lets silence the warning until a fix is widely available.

clippy version: clippy 0.1.70 (90c5418 2023-05-31).

[1] https://github.com/rust-lang/rust-clippy/issues/10555

Reported-by: Kent Gibson <warthog618@gmail.com>
Link: https://lore.kernel.org/r/20230612154055.56556-1-warthog618@gmail.com
Signed-off-by: Erik Schilling <erik.schilling@linaro.org>
---
 bindings/rust/libgpiod/src/line_info.rs     | 3 +++
 bindings/rust/libgpiod/src/line_settings.rs | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/bindings/rust/libgpiod/src/line_info.rs b/bindings/rust/libgpiod/src/line_info.rs
index 702f1b4..c4f488c 100644
--- a/bindings/rust/libgpiod/src/line_info.rs
+++ b/bindings/rust/libgpiod/src/line_info.rs
@@ -142,6 +142,9 @@ impl Info {
 
     /// Get the debounce period of the line.
     pub fn debounce_period(&self) -> Duration {
+        // c_ulong may be 32bit OR 64bit, clippy reports a false-positive here:
+        // https://github.com/rust-lang/rust-clippy/issues/10555
+        #[allow(clippy::unnecessary_cast)]
         // SAFETY: `gpiod_line_info` is guaranteed to be valid here.
         Duration::from_micros(unsafe {
             gpiod::gpiod_line_info_get_debounce_period_us(self.info) as u64
diff --git a/bindings/rust/libgpiod/src/line_settings.rs b/bindings/rust/libgpiod/src/line_settings.rs
index 79ee2f5..f0b3e9c 100644
--- a/bindings/rust/libgpiod/src/line_settings.rs
+++ b/bindings/rust/libgpiod/src/line_settings.rs
@@ -218,6 +218,9 @@ impl Settings {
 
     /// Get the debounce period.
     pub fn debounce_period(&self) -> Result<Duration> {
+        // c_ulong may be 32bit OR 64bit, clippy reports a false-positive here:
+        // https://github.com/rust-lang/rust-clippy/issues/10555
+        #[allow(clippy::unnecessary_cast)]
         // SAFETY: `gpiod_line_settings` is guaranteed to be valid here.
         Ok(Duration::from_micros(unsafe {
             gpiod::gpiod_line_settings_get_debounce_period_us(self.settings) as u64

-- 
2.41.0