diff options
| author | Alice Ryhl <aliceryhl@google.com> | 2023-05-02 12:40:15 +0000 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2023-05-31 18:53:10 +0200 |
| commit | 4a59081c09cbfe17505baf3db50ebb9b97290bae (patch) | |
| tree | e6fa3f0dc0f650ba8be998ed47ad41ddbd2de6a8 /rust | |
| parent | 309786c2393c7b3375c232b137e52613c8099327 (diff) | |
rust: error: allow specifying error type on `Result`
Currently, if the `kernel::error::Result` type is in scope (which is
often is, since it's in the kernel's prelude), you cannot write
`Result<T, SomeOtherErrorType>` when you want to use a different error
type than `kernel::error::Error`.
To solve this we change the error type from being hard-coded to just
being a default generic parameter. This still lets you write `Result<T>`
when you just want to use the `Error` error type, but also lets you
write `Result<T, SomeOtherErrorType>` when necessary.
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Asahi Lina <lina@asahilina.net>
Reviewed-by: Andreas Hindborg <a.hindborg@samsung.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://lore.kernel.org/r/20230502124015.356001-1-aliceryhl@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'rust')
| -rw-r--r-- | rust/kernel/error.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs index 5f4114b30b94..01dd4d2f63d2 100644 --- a/rust/kernel/error.rs +++ b/rust/kernel/error.rs @@ -177,7 +177,7 @@ impl From<core::convert::Infallible> for Error { /// Note that even if a function does not return anything when it succeeds, /// it should still be modeled as returning a `Result` rather than /// just an [`Error`]. -pub type Result<T = ()> = core::result::Result<T, Error>; +pub type Result<T = (), E = Error> = core::result::Result<T, E>; /// Converts an integer as returned by a C kernel function to an error if it's negative, and /// `Ok(())` otherwise. |