From f0c6ea853bd7f48aeec231e9378fc17cf36b9109 Mon Sep 17 00:00:00 2001
From: Tamir Duberstein <tamird@gmail.com>
Date: Mon, 22 Dec 2025 13:35:28 +0100
Subject: [PATCH] rust: device: replace `kernel::c_str!` with C-Strings

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@linuxfoundation.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Link: https://patch.msgid.link/20251222-cstr-driver-core-v1-2-1142a177d0fd@gmail.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
---
 rust/kernel/device.rs          | 4 +---
 rust/kernel/device/property.rs | 6 +++---
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/rust/kernel/device.rs b/rust/kernel/device.rs
index 21bde8d95185..a13f6ee24b09 100644
--- a/rust/kernel/device.rs
+++ b/rust/kernel/device.rs
@@ -12,8 +12,6 @@ use crate::{
 };
 use core::{any::TypeId, marker::PhantomData, ptr};
 
-#[cfg(CONFIG_PRINTK)]
-use crate::c_str;
 use crate::str::CStrExt as _;
 
 pub mod property;
@@ -463,7 +461,7 @@ impl<Ctx: DeviceContext> Device<Ctx> {
             bindings::_dev_printk(
                 klevel.as_ptr().cast::<crate::ffi::c_char>(),
                 self.as_raw(),
-                c_str!("%pA").as_char_ptr(),
+                c"%pA".as_char_ptr(),
                 core::ptr::from_ref(&msg).cast::<crate::ffi::c_void>(),
             )
         };
diff --git a/rust/kernel/device/property.rs b/rust/kernel/device/property.rs
index 413221817ef1..5aead835fbbc 100644
--- a/rust/kernel/device/property.rs
+++ b/rust/kernel/device/property.rs
@@ -179,11 +179,11 @@ impl FwNode {
     /// # Examples
     ///
     /// ```
-    /// # use kernel::{c_str, device::{Device, property::FwNode}, str::CString};
+    /// # use kernel::{device::{Device, property::FwNode}, str::CString};
     /// fn examples(dev: &Device) -> Result {
     ///     let fwnode = dev.fwnode().ok_or(ENOENT)?;
-    ///     let b: u32 = fwnode.property_read(c_str!("some-number")).required_by(dev)?;
-    ///     if let Some(s) = fwnode.property_read::<CString>(c_str!("some-str")).optional() {
+    ///     let b: u32 = fwnode.property_read(c"some-number").required_by(dev)?;
+    ///     if let Some(s) = fwnode.property_read::<CString>(c"some-str").optional() {
     ///         // ...
     ///     }
     ///     Ok(())
-- 
2.47.3