linux-kernel - [PATCH] rust: regulator: replace `kernel::c

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Message-Id: <20251222-cstr-regulator-v1-1-430e3d517025@gmail.com>
Date: Mon, 22 Dec 2025 13:15:58 +0100
From: Tamir Duberstein <tamird@...nel.org>
To: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...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>, 
 Danilo Krummrich <dakr@...nel.org>
Cc: linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org, 
 Tamir Duberstein <tamird@...il.com>
Subject: [PATCH] rust: regulator: 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.

Signed-off-by: Tamir Duberstein <tamird@...il.com>
---
 rust/kernel/regulator.rs | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/rust/kernel/regulator.rs b/rust/kernel/regulator.rs
index 2c44827ad0b7..4f7837c7e53a 100644
--- a/rust/kernel/regulator.rs
+++ b/rust/kernel/regulator.rs
@@ -122,12 +122,11 @@ pub fn devm_enable_optional(dev: &Device<Bound>, name: &CStr) -> Result {
 ///
 /// ```
 /// # use kernel::prelude::*;
-/// # use kernel::c_str;
 /// # use kernel::device::Device;
 /// # use kernel::regulator::{Voltage, Regulator, Disabled, Enabled};
 /// fn enable(dev: &Device, min_voltage: Voltage, max_voltage: Voltage) -> Result {
 ///     // Obtain a reference to a (fictitious) regulator.
-///     let regulator: Regulator<Disabled> = Regulator::<Disabled>::get(dev, c_str!("vcc"))?;
+///     let regulator: Regulator<Disabled> = Regulator::<Disabled>::get(dev, c"vcc")?;
 ///
 ///     // The voltage can be set before enabling the regulator if needed, e.g.:
 ///     regulator.set_voltage(min_voltage, max_voltage)?;
@@ -166,12 +165,11 @@ pub fn devm_enable_optional(dev: &Device<Bound>, name: &CStr) -> Result {
 ///
 /// ```
 /// # use kernel::prelude::*;
-/// # use kernel::c_str;
 /// # use kernel::device::Device;
 /// # use kernel::regulator::{Voltage, Regulator, Enabled};
 /// fn enable(dev: &Device) -> Result {
 ///     // Obtain a reference to a (fictitious) regulator and enable it.
-///     let regulator: Regulator<Enabled> = Regulator::<Enabled>::get(dev, c_str!("vcc"))?;
+///     let regulator: Regulator<Enabled> = Regulator::<Enabled>::get(dev, c"vcc")?;
 ///
 ///     // Dropping an enabled regulator will disable it. The refcount will be
 ///     // decremented.
@@ -193,13 +191,12 @@ pub fn devm_enable_optional(dev: &Device<Bound>, name: &CStr) -> Result {
 ///
 /// ```
 /// # use kernel::prelude::*;
-/// # use kernel::c_str;
 /// # use kernel::device::{Bound, Device};
 /// # use kernel::regulator;
 /// fn enable(dev: &Device<Bound>) -> Result {
 ///     // Obtain a reference to a (fictitious) regulator and enable it. This
 ///     // call only returns whether the operation succeeded.
-///     regulator::devm_enable(dev, c_str!("vcc"))?;
+///     regulator::devm_enable(dev, c"vcc")?;
 ///
 ///     // The regulator will be disabled and put when `dev` is unbound.
 ///     Ok(())

---
base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
change-id: 20251222-cstr-regulator-dc3f6d3fc384

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