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References: <cover.1738832118.git.viresh.kumar@linaro.org> <c68081e18d939aefc7f6dac798df6b72e81bba4b.1738832118.git.viresh.kumar@linaro.org> <Z6ShsuLykigNscz8@pollux> <Z6SiiRubSXGInbgj@pollux> <0cd42d2d683ea057e6034978b02c7f84.sboyd@kernel.org> <Z6VBo51g54xAmelQ@cassiopeiae>
Subject: Re: [PATCH V8 06/14] rust: Add bare minimal bindings for clk framework
From: Stephen Boyd <sboyd@kernel.org>
Cc: Viresh Kumar <viresh.kumar@linaro.org>, Rafael J. Wysocki <rafael@kernel.org>, Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>, Danilo Krummrich <dakr@redhat.com>, Miguel Ojeda <ojeda@kernel.org>, Alex Gaynor <alex.gaynor@gmail.com>, Boqun Feng <boqun.feng@gmail.com>, Gary Guo <gary@garyguo.net>, =?utf-8?q?Bj=C3=B6rn?= Roy Baron <bjorn3_gh@protonmail.com>, Benno Lossin <benno.lossin@proton.me>, Andreas Hindborg <a.hindborg@kernel.org>, Alice Ryhl <aliceryhl@google.com>, Trevor Gross <tmgross@umich.edu>, Michael Turquette <mturquette@baylibre.com>, linux-pm@vger.kernel.org, Vincent Guittot <vincent.guittot@linaro.org>, Nishanth Menon <nm@ti.com>, rust-for-linux@vger.kernel.org, Manos Pitsidianakis <manos.pitsidianakis@linaro.org>, Erik Schilling <erik.schilling@linaro.org>, Alex =?utf-8?q?Benn=C3=A9e?= <alex.bennee@linaro.org>, Joakim Bech <joakim.bech@linaro.org>, Rob Herring <robh@kernel.org>, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org
To: Danilo Krummrich <dakr@kernel.org>
Date: Mon, 10 Feb 2025 14:07:49 -0800
User-Agent: alot/0.12.dev1+gaa8c22fdeedb

Quoting Danilo Krummrich (2025-02-06 15:11:31)
> On Thu, Feb 06, 2025 at 12:05:59PM -0800, Stephen Boyd wrote:
>=20
> > as most clk consumer operations bail out early in that case.
>=20
> Most? Does that mean NULL isn't *always* valid?

I'm hedging because the common clk framework is just one implementation
of the clk.h API in the kernel. We still have a couple other
implementations (sadly) where I haven't checked to see what they do if a
NULL pointer is passed in. But NULL should always be a valid clk handle
per the clk.h API documentation, so an implementation that fails at that
is broken.