linux-kernel - Re: [PATCH 0/2] rust: usb: add initial USB abstractions

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Message-ID: <CANiq72meH4zKk0P3y51+EQ2gZ2miBCmWSPYEJqVt2bBSrZ8t7A@mail.gmail.com>
Date: Tue, 23 Sep 2025 14:55:30 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Daniel Almeida <daniel.almeida@...labora.com>
Cc: Alice Ryhl <aliceryhl@...gle.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	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>, 
	Trevor Gross <tmgross@...ch.edu>, Danilo Krummrich <dakr@...nel.org>, linux-kernel@...r.kernel.org, 
	rust-for-linux@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH 0/2] rust: usb: add initial USB abstractions

On Tue, Sep 23, 2025 at 2:34 PM Daniel Almeida
<daniel.almeida@...labora.com> wrote:
>
> Hmm, but the USB module is gated by #[cfg(CONFIG_USB) in lib.rs, so not having
> CONFIG_USB enabled should not return any errors and instead skip the USB
> bindings completely.
>
> I wonder if this has to be CONFIG_USB=y?

Yes, the `kernel` crate is built-in and it is trying to call something
from a module.

Cheers,
Miguel