[PATCH 4/6] rust: io: remove legacy relaxed accessors of Mmio

Alexandre Courbot
2026-02-02T08:13:57Z

The relaxed access functionality is now provided by the `RelaxedMmio`
wrapper type, and we don't have any user of the legacy methods left.
Remove them.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
rust/kernel/io.rs | 40 ----------------------------------------
1 file changed, 40 deletions(-)

diff --git a/rust/kernel/io.rs b/rust/kernel/io.rs
index baa8d3baa20c..e1094a237ff7 100644
--- a/rust/kernel/io.rs
+++ b/rust/kernel/io.rs
@@ -660,46 +660,6 @@ pub unsafe fn from_raw(raw: &MmioRaw<SIZE>) -> &Self {
// SAFETY: `Mmio` is a transparent wrapper around `MmioRaw`.
unsafe { &*core::ptr::from_ref(raw).cast() }
}
-
- define_read!(infallible, pub read8_relaxed, call_mmio_read(readb_relaxed) -> u8);
- define_read!(infallible, pub read16_relaxed, call_mmio_read(readw_relaxed) -> u16);
- define_read!(infallible, pub read32_relaxed, call_mmio_read(readl_relaxed) -> u32);
- define_read!(
- infallible,
- #[cfg(CONFIG_64BIT)]
- pub read64_relaxed,
- call_mmio_read(readq_relaxed) -> u64
- );
-
- define_read!(fallible, pub try_read8_relaxed, call_mmio_read(readb_relaxed) -> u8);
- define_read!(fallible, pub try_read16_relaxed, call_mmio_read(readw_relaxed) -> u16);
- define_read!(fallible, pub try_read32_relaxed, call_mmio_read(readl_relaxed) -> u32);
- define_read!(
- fallible,
- #[cfg(CONFIG_64BIT)]
- pub try_read64_relaxed,
- call_mmio_read(readq_relaxed) -> u64
- );
-
- define_write!(infallible, pub write8_relaxed, call_mmio_write(writeb_relaxed) <- u8);
- define_write!(infallible, pub write16_relaxed, call_mmio_write(writew_relaxed) <- u16);
- define_write!(infallible, pub write32_relaxed, call_mmio_write(writel_relaxed) <- u32);
- define_write!(
- infallible,
- #[cfg(CONFIG_64BIT)]
- pub write64_relaxed,
- call_mmio_write(writeq_relaxed) <- u64
- );
-
- define_write!(fallible, pub try_write8_relaxed, call_mmio_write(writeb_relaxed) <- u8);
- define_write!(fallible, pub try_write16_relaxed, call_mmio_write(writew_relaxed) <- u16);
- define_write!(fallible, pub try_write32_relaxed, call_mmio_write(writel_relaxed) <- u32);
- define_write!(
- fallible,
- #[cfg(CONFIG_64BIT)]
- pub try_write64_relaxed,
- call_mmio_write(writeq_relaxed) <- u64
- );
}

/// [`Mmio`] wrapper using relaxed accessors.

--
2.52.0