linux-kernel - [PATCH] samples: rust: faux: replace `kernel::c

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Message-Id: <20251223-cstr-faux-v1-1-ee0c5cf1be4b@gmail.com>
Date: Tue, 23 Dec 2025 08:40:24 +0100
From: Tamir Duberstein <tamird@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, Danilo Krummrich <dakr@...nel.org>, 
 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>, 
 Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>
Cc: rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Tamir Duberstein <tamird@...il.com>
Subject: [PATCH] samples: rust: faux: 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>
Acked-by: Danilo Krummrich <dakr@...nel.org>
Signed-off-by: Tamir Duberstein <tamird@...il.com>
---
 samples/rust/rust_driver_faux.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/samples/rust/rust_driver_faux.rs b/samples/rust/rust_driver_faux.rs
index ecc9fd378cbd..23add3160693 100644
--- a/samples/rust/rust_driver_faux.rs
+++ b/samples/rust/rust_driver_faux.rs
@@ -2,7 +2,7 @@

 //! Rust faux device sample.

-use kernel::{c_str, faux, prelude::*, Module};
+use kernel::{faux, prelude::*, Module};

 module! {
     type: SampleModule,
@@ -20,7 +20,7 @@ impl Module for SampleModule {
     fn init(_module: &'static ThisModule) -> Result<Self> {
         pr_info!("Initialising Rust Faux Device Sample\n");

-        let reg = faux::Registration::new(c_str!("rust-faux-sample-device"), None)?;
+        let reg = faux::Registration::new(c"rust-faux-sample-device", None)?;

         dev_info!(reg.as_ref(), "Hello from faux device!\n");

---
base-commit: 185c81461ff4987d35fdfc4c8da46ae51ee5ada4
change-id: 20251223-cstr-faux-74c0dde845ea

Best regards,
--  
Tamir Duberstein <tamird@...il.com>