linux-kernel - Re: [PATCH v3] rust: regulator: add a bare minimum regulator abstraction

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aCSRJnKu3-igA2PK@finisterre.sirena.org.uk>
Date: Wed, 14 May 2025 14:48:38 +0200
From: Mark Brown <broonie@...nel.org>
To: Benno Lossin <lossin@...nel.org>
Cc: Daniel Almeida <daniel.almeida@...labora.com>,
	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 <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>,
	Boris Brezillon <boris.brezillon@...labora.com>,
	Sebastian Reichel <sebastian.reichel@...labora.com>,
	Liam Girdwood <lgirdwood@...il.com>, linux-kernel@...r.kernel.org,
	rust-for-linux@...r.kernel.org
Subject: Re: [PATCH v3] rust: regulator: add a bare minimum regulator
 abstraction

On Wed, May 14, 2025 at 02:23:04PM +0200, Benno Lossin wrote:
> On Wed May 14, 2025 at 1:50 PM CEST, Mark Brown wrote:

> > In the C API the disable operation just fails and it's treated as though
> > you hadn't done anything from a refcounting point of view.

> But if it succeeds it takes ownership? The function `regulator_disable`
> is also used in the `Drop` impl of the `EnabledRegulator`, so it better
> give up the refcount, otherwise we would leak it.

I can't understand what you are saying at all, sorry.  What does "take
ownership" mean, and what is the "it" here?  We are talking about the
case where regulator_disable() fails here, that means it didn't do what
it was asked to do.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)