netdev - [PATCH] rust: simplify Result<()> uses

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Message-Id: <20241117-simplify-result-v1-1-5b01bd230a6b@iiitd.ac.in>
Date: Sun, 17 Nov 2024 20:41:47 +0530
From: Manas via B4 Relay <devnull+manas18244.iiitd.ac.in@...nel.org>
To: FUJITA Tomonori <fujita.tomonori@...il.com>, 
 Trevor Gross <tmgross@...ch.edu>, Andrew Lunn <andrew@...n.ch>, 
 Heiner Kallweit <hkallweit1@...il.com>, 
 Russell King <linux@...linux.org.uk>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Andreas Hindborg <a.hindborg@...nel.org>, Boqun Feng <boqun.feng@...il.com>, 
 Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
 Gary Guo <gary@...yguo.net>, 
 Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
 Benno Lossin <benno.lossin@...ton.me>, Alice Ryhl <aliceryhl@...gle.com>
Cc: Shuah Khan <skhan@...uxfoundation.org>, 
 Anup Sharma <anupnewsmail@...il.com>, netdev@...r.kernel.org, 
 rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-block@...r.kernel.org, Manas <manas18244@...td.ac.in>
Subject: [PATCH] rust: simplify Result<()> uses

From: Manas <manas18244@...td.ac.in>

This patch replaces `Result<()>` with `Result`.

Suggested-by: Miguel Ojeda <ojeda@...nel.org>
Link: https://github.com/Rust-for-Linux/linux/issues/1128
Signed-off-by: Manas <manas18244@...td.ac.in>
---
 drivers/net/phy/qt2025.rs        | 2 +-
 rust/kernel/block/mq/gen_disk.rs | 2 +-
 rust/kernel/uaccess.rs           | 2 +-
 rust/macros/lib.rs               | 6 +++---
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/phy/qt2025.rs b/drivers/net/phy/qt2025.rs
index 1ab065798175b4f54c5f2fd6c871ba2942c48bf1..25c12a02baa255d3d5952e729a890b3ccfe78606 100644
--- a/drivers/net/phy/qt2025.rs
+++ b/drivers/net/phy/qt2025.rs
@@ -39,7 +39,7 @@ impl Driver for PhyQT2025 {
     const NAME: &'static CStr = c_str!("QT2025 10Gpbs SFP+");
     const PHY_DEVICE_ID: phy::DeviceId = phy::DeviceId::new_with_exact_mask(0x0043a400);
 
-    fn probe(dev: &mut phy::Device) -> Result<()> {
+    fn probe(dev: &mut phy::Device) -> Result {
         // Check the hardware revision code.
         // Only 0x3b works with this driver and firmware.
         let hw_rev = dev.read(C45::new(Mmd::PMAPMD, 0xd001))?;
diff --git a/rust/kernel/block/mq/gen_disk.rs b/rust/kernel/block/mq/gen_disk.rs
index 708125dce96a934f32caab44d5e6cff14c4321a9..798c4ae0bdedd58221b5851a630c0e1052e0face 100644
--- a/rust/kernel/block/mq/gen_disk.rs
+++ b/rust/kernel/block/mq/gen_disk.rs
@@ -45,7 +45,7 @@ pub fn rotational(mut self, rotational: bool) -> Self {
 
     /// Validate block size by verifying that it is between 512 and `PAGE_SIZE`,
     /// and that it is a power of two.
-    fn validate_block_size(size: u32) -> Result<()> {
+    fn validate_block_size(size: u32) -> Result {
         if !(512..=bindings::PAGE_SIZE as u32).contains(&size) || !size.is_power_of_two() {
             Err(error::code::EINVAL)
         } else {
diff --git a/rust/kernel/uaccess.rs b/rust/kernel/uaccess.rs
index 05b0b8d13b10da731af62be03e1c2c13ced3f706..7c21304344ccd943816e38119a5be2ccf8d8e154 100644
--- a/rust/kernel/uaccess.rs
+++ b/rust/kernel/uaccess.rs
@@ -49,7 +49,7 @@
 /// use kernel::error::Result;
 /// use kernel::uaccess::{UserPtr, UserSlice};
 ///
-/// fn bytes_add_one(uptr: UserPtr, len: usize) -> Result<()> {
+/// fn bytes_add_one(uptr: UserPtr, len: usize) -> Result {
 ///     let (read, mut write) = UserSlice::new(uptr, len).reader_writer();
 ///
 ///     let mut buf = KVec::new();
diff --git a/rust/macros/lib.rs b/rust/macros/lib.rs
index 4ab94e44adfe3206faad159e81417ea41a35815b..463920353ca9c408f5d69e2626c13a173bae98d7 100644
--- a/rust/macros/lib.rs
+++ b/rust/macros/lib.rs
@@ -144,11 +144,11 @@ pub fn module(ts: TokenStream) -> TokenStream {
 /// // Declares a `#[vtable]` trait
 /// #[vtable]
 /// pub trait Operations: Send + Sync + Sized {
-///     fn foo(&self) -> Result<()> {
+///     fn foo(&self) -> Result {
 ///         kernel::build_error(VTABLE_DEFAULT_ERROR)
 ///     }
 ///
-///     fn bar(&self) -> Result<()> {
+///     fn bar(&self) -> Result {
 ///         kernel::build_error(VTABLE_DEFAULT_ERROR)
 ///     }
 /// }
@@ -158,7 +158,7 @@ pub fn module(ts: TokenStream) -> TokenStream {
 /// // Implements the `#[vtable]` trait
 /// #[vtable]
 /// impl Operations for Foo {
-///     fn foo(&self) -> Result<()> {
+///     fn foo(&self) -> Result {
 /// #        Err(EINVAL)
 ///         // ...
 ///     }

---
base-commit: b2603f8ac8217bc59f5c7f248ac248423b9b99cb
change-id: 20241117-simplify-result-cad98af090c9

Best regards,
-- 
Manas <manas18244@...td.ac.in>