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

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Message-Id: <A0008125-1FE6-4B95-8188-9DEA67F68942@collabora.com>
Date: Mon, 19 May 2025 08:01:15 -0300
From: Daniel Almeida <daniel.almeida@...labora.com>
To: Alexandre Courbot <acourbot@...dia.com>
Cc: 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>,
 Mark Brown <broonie@...nel.org>,
 linux-kernel@...r.kernel.org,
 rust-for-linux@...r.kernel.org
Subject: Re: [PATCH v3] rust: regulator: add a bare minimum regulator
 abstraction

Minor correction:


> This is explicitly not supported, because (given the current code) why should it be?
> 
> If you want a given regulator to be enabled, just make sure you have
> Regulator<Enabled> in your kernel::types::Either container.
> 
> You don't need a counter either: Regulator<Enabled> has a count of one, and
> when that goes out of scope, it's decremented.

Regulator<Enabled> has a +1 on the count. The actual underlying count is unknown.

— Daniel