linux-kernel - [PATCH v2 4/6] rust: io: remove legacy relaxed accessors of Mmio

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Message-Id: <20260206-io-v2-4-71dea20a06e6@nvidia.com>
Date: Fri, 06 Feb 2026 15:00:18 +0900
From: Alexandre Courbot <acourbot@...dia.com>
To: Danilo Krummrich <dakr@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>, 
 Daniel Almeida <daniel.almeida@...labora.com>, 
 Miguel Ojeda <ojeda@...nel.org>, Boqun Feng <boqun.feng@...il.com>, 
 Gary Guo <gary@...yguo.net>, 
 Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
 Benno Lossin <lossin@...nel.org>, Andreas Hindborg <a.hindborg@...nel.org>, 
 Trevor Gross <tmgross@...ch.edu>, Bjorn Helgaas <bhelgaas@...gle.com>, 
 Krzysztof Wilczyński <kwilczynski@...nel.org>
Cc: driver-core@...ts.linux.dev, rust-for-linux@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org, 
 Zhi Wang <zhiw@...dia.com>, Lyude Paul <lyude@...hat.com>, 
 Eliot Courtney <ecourtney@...dia.com>, 
 Alexandre Courbot <acourbot@...dia.com>
Subject: [PATCH v2 4/6] rust: io: remove legacy relaxed accessors of Mmio

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.

Reviewed-by: Daniel Almeida <daniel.almeida@...labora.com>
Acked-by: Alice Ryhl <aliceryhl@...gle.com>
Signed-off-by: Alexandre Courbot <acourbot@...dia.com>
---
 rust/kernel/io.rs | 40 ----------------------------------------
 1 file changed, 40 deletions(-)

diff --git a/rust/kernel/io.rs b/rust/kernel/io.rs
index d5d6e9501453..06856d6a9b46 100644
--- a/rust/kernel/io.rs
+++ b/rust/kernel/io.rs
@@ -654,46 +654,6 @@ 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.

-- 
2.53.0