linux-kernel - [PATCH v3 2/6] rust: net: replace `kernel::c

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Message-Id: <20251113-core-cstr-cstrings-v3-2-411b34002774@gmail.com>
Date: Thu, 13 Nov 2025 17:58:25 -0500
From: Tamir Duberstein <tamird@...nel.org>
To: Luis Chamberlain <mcgrof@...nel.org>, 
 Russ Weight <russ.weight@...ux.dev>, Danilo Krummrich <dakr@...nel.org>, 
 Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
 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>, 
 Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, 
 FUJITA Tomonori <fujita.tomonori@...il.com>
Cc: linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org, 
 netdev@...r.kernel.org, Tamir Duberstein <tamird@...il.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH v3 2/6] rust: net: replace `kernel::c_str!` with C-Strings

From: Tamir Duberstein <tamird@...il.com>

C-String literals were added in Rust 1.77. Replace instances of
`kernel::c_str!` with C-String literals where possible.

Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Reviewed-by: Alice Ryhl <aliceryhl@...gle.com>
Reviewed-by: Benno Lossin <lossin@...nel.org>
Signed-off-by: Tamir Duberstein <tamird@...il.com>
---
 rust/kernel/net/phy.rs | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/rust/kernel/net/phy.rs b/rust/kernel/net/phy.rs
index bf6272d87a7b..3ca99db5cccf 100644
--- a/rust/kernel/net/phy.rs
+++ b/rust/kernel/net/phy.rs
@@ -777,7 +777,6 @@ const fn as_int(&self) -> u32 {
 ///
 /// ```
 /// # mod module_phy_driver_sample {
-/// use kernel::c_str;
 /// use kernel::net::phy::{self, DeviceId};
 /// use kernel::prelude::*;
 ///
@@ -796,7 +795,7 @@ const fn as_int(&self) -> u32 {
 ///
 /// #[vtable]
 /// impl phy::Driver for PhySample {
-///     const NAME: &'static CStr = c_str!("PhySample");
+///     const NAME: &'static CStr = c"PhySample";
 ///     const PHY_DEVICE_ID: phy::DeviceId = phy::DeviceId::new_with_exact_mask(0x00000001);
 /// }
 /// # }
@@ -805,7 +804,6 @@ const fn as_int(&self) -> u32 {
 /// This expands to the following code:
 ///
 /// ```ignore
-/// use kernel::c_str;
 /// use kernel::net::phy::{self, DeviceId};
 /// use kernel::prelude::*;
 ///
@@ -825,7 +823,7 @@ const fn as_int(&self) -> u32 {
 ///
 /// #[vtable]
 /// impl phy::Driver for PhySample {
-///     const NAME: &'static CStr = c_str!("PhySample");
+///     const NAME: &'static CStr = c"PhySample";
 ///     const PHY_DEVICE_ID: phy::DeviceId = phy::DeviceId::new_with_exact_mask(0x00000001);
 /// }
 ///

-- 
2.51.2