linux-kernel - Re: [PATCH 01/10] rust: Move property

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Message-ID: <Z-UOUKq8GKZM1wuo@smile.fi.intel.com>
Date: Thu, 27 Mar 2025 10:37:36 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Remo Senekowitsch <remo@...nzli.dev>
Cc: Daniel Scally <djrscally@...il.com>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Rob Herring <robh@...nel.org>, Dirk Behme <dirk.behme@...bosch.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Danilo Krummrich <dakr@...nel.org>,
	Saravana Kannan <saravanak@...gle.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>,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	devicetree@...r.kernel.org, rust-for-linux@...r.kernel.org
Subject: Re: [PATCH 01/10] rust: Move property_present to property.rs

On Wed, Mar 26, 2025 at 06:13:40PM +0100, Remo Senekowitsch wrote:
> Not all property-related APIs can be exposed directly on a device.
> For example, iterating over child nodes of a device will yield
> fwnode_handle. Thus, in order to access properties on these child nodes,
> the APIs has to be duplicated on a fwnode as they are in C.
> 
> A related discussion can be found on the R4L Zulip[1].
> 
> [1] https://rust-for-linux.zulipchat.com/#narrow/channel/288089-General/topic/DS90UB954.20driver.20done.2C.20ready.20to.20upstream.3F/near/505415697

You can make the above to be a Link tag like

Link: ... [1]

> Signed-off-by: Remo Senekowitsch <remo@...nzli.dev>

...

> +struct fwnode_handle *rust_helper_dev_fwnode(struct device *dev)
> +{
> +	return dev_fwnode(dev);
> +}

Why not const? For most of the property retrieval APIs the parameter is const.

-- 
With Best Regards,
Andy Shevchenko