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

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Message-Id: <20251222-cstr-pci-v1-1-a0397c61bbe4@gmail.com>
Date: Mon, 22 Dec 2025 13:23:54 +0100
From: Tamir Duberstein <tamird@...nel.org>
To: Danilo Krummrich <dakr@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>, 
 Krzysztof Wilczyński <kwilczynski@...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: linux-pci@...r.kernel.org, rust-for-linux@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Tamir Duberstein <tamird@...il.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH] samples: rust: pci: 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_pci.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/samples/rust/rust_driver_pci.rs b/samples/rust/rust_driver_pci.rs
index 5823787bea8e..991cc111fd63 100644
--- a/samples/rust/rust_driver_pci.rs
+++ b/samples/rust/rust_driver_pci.rs
@@ -4,7 +4,7 @@
 //!
 //! To make this driver probe, QEMU must be run with `-device pci-testdev`.
 
-use kernel::{c_str, device::Core, devres::Devres, pci, prelude::*, sync::aref::ARef};
+use kernel::{device::Core, devres::Devres, pci, prelude::*, sync::aref::ARef};
 
 struct Regs;
 
@@ -79,7 +79,7 @@ fn probe(pdev: &pci::Device<Core>, info: &Self::IdInfo) -> impl PinInit<Self, Er
             pdev.set_master();
 
             Ok(try_pin_init!(Self {
-                bar <- pdev.iomap_region_sized::<{ Regs::END }>(0, c_str!("rust_driver_pci")),
+                bar <- pdev.iomap_region_sized::<{ Regs::END }>(0, c"rust_driver_pci"),
                 index: *info,
                 _: {
                     let bar = bar.access(pdev.as_ref())?;

---
base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
change-id: 20251222-cstr-pci-448ca1f4aa31

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