linux-kernel - [PATCH v3 1/1] rust: device: rename "Device::from

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Message-ID: <20240930144328.51098-2-trintaeoitogc@gmail.com>
Date: Mon, 30 Sep 2024 11:43:27 -0300
From: Guilherme Giacomo Simoes <trintaeoitogc@...il.com>
To: gregkh@...uxfoundation.org,
	rafael@...nel.org,
	ojeda@...nel.org,
	alex.gaynor@...il.com,
	boqun.feng@...il.com,
	gary@...yguo.net,
	bjorn3_gh@...tonmail.com,
	benno.lossin@...ton.me,
	aliceryhl@...gle.com,
	mcgrof@...nel.org,
	russ.weight@...ux.dev,
	dakr@...hat.com,
	a.hindborg@...nel.org
Cc: Guilherme Giacomo Simoes <trintaeoitogc@...il.com>,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v3 1/1] rust: device: rename "Device::from_raw()"

This function increments the refcount by a call to
"bindings::get_device(ptr)". This can be confused because, the function
Arch::from_raw() from standard library, don't increments the refcount.
Hence, rename "Device::from_raw()" to avoid confusion with other
"from_raw" semantics.

Signed-off-by: Guilherme Giacomo Simoes <trintaeoitogc@...il.com>
---
 rust/kernel/device.rs   | 2 +-
 rust/kernel/firmware.rs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/rust/kernel/device.rs b/rust/kernel/device.rs
index 851018eef885..ecffaff041e0 100644
--- a/rust/kernel/device.rs
+++ b/rust/kernel/device.rs
@@ -51,7 +51,7 @@ impl Device {
     ///
     /// It must also be ensured that `bindings::device::release` can be called from any thread.
     /// While not officially documented, this should be the case for any `struct device`.
-    pub unsafe fn from_raw(ptr: *mut bindings::device) -> ARef<Self> {
+    pub unsafe fn get_device(ptr: *mut bindings::device) -> ARef<Self> {
         // SAFETY: By the safety requirements, ptr is valid.
         // Initially increase the reference count by one to compensate for the final decrement once
         // this newly created `ARef<Device>` instance is dropped.
diff --git a/rust/kernel/firmware.rs b/rust/kernel/firmware.rs
index dee5b4b18aec..13a374a5cdb7 100644
--- a/rust/kernel/firmware.rs
+++ b/rust/kernel/firmware.rs
@@ -44,7 +44,7 @@ fn request_nowarn() -> Self {
 ///
 /// # fn no_run() -> Result<(), Error> {
 /// # // SAFETY: *NOT* safe, just for the example to get an `ARef<Device>` instance
-/// # let dev = unsafe { Device::from_raw(core::ptr::null_mut()) };
+/// # let dev = unsafe { Device::get_device(core::ptr::null_mut()) };
 ///
 /// let fw = Firmware::request(c_str!("path/to/firmware.bin"), &dev)?;
 /// let blob = fw.data();
-- 
2.46.2