From: Alexandre Courbot <acourbot@nvidia.com>
Date: Fri, 6 Feb 2026 06:00:16 +0000 (+0900)
Subject: rust: io: mem: use non-relaxed I/O ops in examples
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=19103d4f93673c804ef82dd797cd2b935d0bf70f;p=thirdparty%2Fkernel%2Flinux.git

rust: io: mem: use non-relaxed I/O ops in examples

The `_relaxed` I/O variant methods are about to be replaced by a wrapper
type exposing this access pattern with the regular methods of the `Io`
trait. Thus replace the examples to use the regular I/O methods.

Since these are examples, we want them to use the most standard ops
anyway, and the relaxed variants were but an addition that was
MMIO-specific.

Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Acked-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260206-io-v2-2-71dea20a06e6@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
---

diff --git a/rust/kernel/io/mem.rs b/rust/kernel/io/mem.rs
index 620022cff4013..7dc78d547f7a2 100644
--- a/rust/kernel/io/mem.rs
+++ b/rust/kernel/io/mem.rs
@@ -54,6 +54,7 @@ impl<'a> IoRequest<'a> {
     /// use kernel::{
     ///     bindings,
     ///     device::Core,
+    ///     io::Io,
     ///     of,
     ///     platform,
     /// };
@@ -78,9 +79,9 @@ impl<'a> IoRequest<'a> {
     ///       let io = iomem.access(pdev.as_ref())?;
     ///
     ///       // Read and write a 32-bit value at `offset`.
-    ///       let data = io.read32_relaxed(offset);
+    ///       let data = io.read32(offset);
     ///
-    ///       io.write32_relaxed(data, offset);
+    ///       io.write32(data, offset);
     ///
     ///       # Ok(SampleDriver)
     ///     }
@@ -117,6 +118,7 @@ impl<'a> IoRequest<'a> {
     /// use kernel::{
     ///     bindings,
     ///     device::Core,
+    ///     io::Io,
     ///     of,
     ///     platform,
     /// };
@@ -141,9 +143,9 @@ impl<'a> IoRequest<'a> {
     ///
     ///       let io = iomem.access(pdev.as_ref())?;
     ///
-    ///       let data = io.try_read32_relaxed(offset)?;
+    ///       let data = io.try_read32(offset)?;
     ///
-    ///       io.try_write32_relaxed(data, offset)?;
+    ///       io.try_write32(data, offset)?;
     ///
     ///       # Ok(SampleDriver)
     ///     }