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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Rob Herring <robh@kernel.org>
Cc: "Remo Senekowitsch" <remo@buenzli.dev>,
	"Daniel Scally" <djrscally@gmail.com>,
	"Heikki Krogerus" <heikki.krogerus@linux.intel.com>,
	"Sakari Ailus" <sakari.ailus@linux.intel.com>,
	"Dirk Behme" <dirk.behme@de.bosch.com>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	"Danilo Krummrich" <dakr@kernel.org>,
	"Saravana Kannan" <saravanak@google.com>,
	"Miguel Ojeda" <ojeda@kernel.org>,
	"Alex Gaynor" <alex.gaynor@gmail.com>,
	"Boqun Feng" <boqun.feng@gmail.com>,
	"Gary Guo" <gary@garyguo.net>,
	"Björn 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>,
	linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
	devicetree@vger.kernel.org, rust-for-linux@vger.kernel.org
Subject: Re: [PATCH 03/10] device property: Add fwnode_property_read_int_array()
Date: Thu, 3 Apr 2025 19:15:43 +0300	[thread overview]
Message-ID: <Z-60LwRrw30cq4YE@smile.fi.intel.com> (raw)
In-Reply-To: <CAL_Jsq+tJvGsbw1dGdgmBM8+cL4vN71OMTvX9tkmBLNk=6T9KQ@mail.gmail.com>

On Thu, Apr 03, 2025 at 11:04:32AM -0500, Rob Herring wrote:
> On Thu, Mar 27, 2025 at 3:41 AM Andy Shevchenko
> <andriy.shevchenko@linux.intel.com> wrote:
> >
> > On Wed, Mar 26, 2025 at 06:13:42PM +0100, Remo Senekowitsch wrote:
> > > The rust bindings for reading device properties has a single
> > > implementation supporting differing sizes of integers. The fwnode C API
> > > already has a similar interface, but it is not exposed with the
> > > fwnode_property_ API. Add the fwnode_property_read_int_array() wrapper.

...

> > > +EXPORT_SYMBOL_GPL(fwnode_property_read_int_array);
> >
> > I'm not sure about this. We have a lot of assumptions in the code that the
> > arrays beneath are only represented by the selected number of integer types.
> > This opens a Pandora's box, e.g., reading in u24, which is not supported by
> > the upper layers..
> 
> We can probably drop the export if it is just that which you object to.

Yes, this is main point, but dropping it does not prevent from still using in
the complied-in code. Is it possible to hide it better?

> Without this function, the implementation is just multiple levels of
> switch statements to work-around what's needed for the nicest rust
> API.

-- 
With Best Regards,
Andy Shevchenko



  reply	other threads:[~2025-04-03 16:15 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-26 17:13 [PATCH 0/10] More Rust bindings for device property reads Remo Senekowitsch
2025-03-26 17:13 ` [PATCH 01/10] rust: Move property_present to property.rs Remo Senekowitsch
2025-03-26 20:51   ` Rob Herring
2025-03-26 22:41     ` Rob Herring
2025-04-04 12:48     ` Remo Senekowitsch
2025-03-26 20:58   ` Andrew Ballance
2025-03-27  8:37   ` Andy Shevchenko
2025-03-27 13:55     ` Rob Herring
2025-03-27 17:49       ` Andy Shevchenko
2025-03-26 17:13 ` [PATCH 02/10] rust: Add an Integer trait Remo Senekowitsch
2025-03-26 20:00   ` Rob Herring
2025-03-26 17:13 ` [PATCH 03/10] device property: Add fwnode_property_read_int_array() Remo Senekowitsch
2025-03-27  8:41   ` Andy Shevchenko
2025-04-02 16:04     ` Remo Senekowitsch
2025-04-03 13:28       ` Andy Shevchenko
2025-04-03 16:08         ` Rob Herring
2025-04-03 16:15           ` Remo Senekowitsch
2025-04-03 17:04           ` Remo Senekowitsch
2025-04-03 17:22             ` Rob Herring
2025-04-04 12:29           ` Remo Senekowitsch
2025-04-03 16:04     ` Rob Herring
2025-04-03 16:15       ` Andy Shevchenko [this message]
2025-04-03 16:36         ` Rob Herring
2025-04-03 17:54           ` Andy Shevchenko
2025-04-03 18:48             ` Rob Herring
2025-04-03 20:36               ` Miguel Ojeda
2025-04-04 11:00                 ` Andy Shevchenko
2025-04-04 14:12                   ` Rob Herring
2025-04-04 16:35                     ` Andy Shevchenko
2025-03-26 17:13 ` [PATCH 04/10] rust: Add bindings for reading device properties Remo Senekowitsch
2025-03-26 21:27   ` Rob Herring
2025-04-02 16:28     ` Remo Senekowitsch
2025-03-26 17:13 ` [PATCH 05/10] rust: Read properties via single generic method Remo Senekowitsch
2025-03-26 21:33   ` Rob Herring
2025-03-26 17:13 ` [PATCH 06/10] rust: property: Add child accessor and iterator Remo Senekowitsch
2025-03-26 21:04   ` Andrew Ballance
2025-03-26 21:40   ` Rob Herring
2025-03-26 17:13 ` [PATCH 07/10] rust: Add arrayvec Remo Senekowitsch
2025-03-26 21:06   ` Andrew Ballance
2025-03-27 14:40   ` Danilo Krummrich
2025-03-26 17:13 ` [PATCH 08/10] rust: property: Add property_get_reference_args Remo Senekowitsch
2025-03-26 21:07   ` Andrew Ballance
2025-03-26 21:25     ` Miguel Ojeda
2025-03-26 21:45       ` Remo Senekowitsch
2025-03-27 14:32   ` Danilo Krummrich
2025-03-26 17:13 ` [PATCH 09/10] rust: property: Add PropertyGuard Remo Senekowitsch
2025-03-26 21:10   ` Andrew Ballance
2025-03-26 22:25   ` Rob Herring
2025-03-26 17:13 ` [PATCH 10/10] samples: rust: platform: Add property read examples Remo Senekowitsch
2025-03-26 22:01   ` Rob Herring
2025-03-26 22:23     ` Remo Senekowitsch
2025-03-27  0:02       ` Rob Herring
2025-03-27 10:28   ` Danilo Krummrich
2025-03-26 20:54 ` [PATCH 0/10] More Rust bindings for device property reads Andrew Ballance
2025-03-27  8:42   ` Andy Shevchenko
2025-04-14 15:26 ` [PATCH v2 0/5] " Remo Senekowitsch
2025-04-14 15:26   ` [PATCH v2 1/5] rust: Move property_present to separate file Remo Senekowitsch
2025-04-14 16:00     ` Danilo Krummrich
2025-04-14 16:40       ` Remo Senekowitsch
2025-04-14 18:00         ` Danilo Krummrich
2025-04-15 11:17           ` Remo Senekowitsch
2025-04-14 15:26   ` [PATCH v2 2/5] rust: Add bindings for reading device properties Remo Senekowitsch
2025-04-14 17:44     ` Danilo Krummrich
2025-04-14 18:05       ` Danilo Krummrich
2025-04-14 23:55       ` Remo Senekowitsch
2025-04-15  9:48         ` Danilo Krummrich
2025-04-15 11:11           ` Remo Senekowitsch
2025-04-15 12:46             ` Rob Herring
2025-04-15 13:11               ` Danilo Krummrich
2025-04-15 14:47               ` Remo Senekowitsch
2025-04-16 18:28           ` Gary Guo
2025-04-23 12:29     ` Dirk Behme
2025-04-24 11:25       ` Remo Senekowitsch
2025-04-23 12:34     ` Dirk Behme
2025-04-14 15:26   ` [PATCH v2 3/5] rust: property: Add child accessor and iterator Remo Senekowitsch
2025-04-14 16:09     ` Danilo Krummrich
2025-04-14 15:26   ` [PATCH v2 4/5] rust: property: Add property_get_reference_args Remo Senekowitsch
2025-04-14 15:26   ` [PATCH v2 5/5] samples: rust: platform: Add property read examples Remo Senekowitsch
2025-04-23 12:39     ` Dirk Behme
2025-04-24  5:47       ` Dirk Behme
2025-04-14 15:38   ` [PATCH v2 0/5] More Rust bindings for device property reads Miguel Ojeda
2025-04-14 16:07     ` Remo Senekowitsch
2025-04-14 16:44       ` Miguel Ojeda

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