linux-kernel - Re: [PATCH 1/8] rust: kernel: Add Platform device and driver abstractions

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Message-ID: <bd542178-af1c-439d-bde4-9865cf6c853c@gmail.com>
Date: Wed, 11 Sep 2024 21:22:02 +0530
From: Ayush Singh <ayushdevel1325@...il.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Ayush Singh <ayush@...gleboard.org>
Cc: fabien.parent@...aro.org, d-gole@...com, lorforlinux@...gleboard.org,
 jkridner@...gleboard.org, robertcnelson@...gleboard.org,
 Andrew Davis <afd@...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>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Derek Kiernan <derek.kiernan@....com>,
 Dragan Cvetic <dragan.cvetic@....com>, Arnd Bergmann <arnd@...db.de>,
 Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
 Tero Kristo <kristo@...nel.org>, linux-kernel@...r.kernel.org,
 rust-for-linux@...r.kernel.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/8] rust: kernel: Add Platform device and driver
 abstractions


On 9/11/24 20:26, Greg Kroah-Hartman wrote:
> On Wed, Sep 11, 2024 at 07:57:18PM +0530, Ayush Singh wrote:
>> +/// An identifier for Platform devices.
>> +///
>> +/// Represents the kernel's [`struct of_device_id`]. This is used to find an appropriate
>> +/// Platform driver.
>> +///
>> +/// [`struct of_device_id`]: srctree/include/linux/mod_devicetable.h
>> +pub struct DeviceId(&'static CStr);
>> +
>> +impl DeviceId {
> <snip>
>
> I appreciate posting this, but this really should go on top of the
> device driver work Danilo Krummrich has been doing.  He and I spent a
> lot of time working through this this past weekend (well, him talking
> and explaining, and me asking too many stupid questions...)
>
> I think what he has will make the platform driver/device work simpler
> here, and I'll be glad to take it based on that, this "independent" code
> that doesn't interact with that isn't the best idea overall.
>
> It also will properly handle the "Driver" interaction as well, which we
> need to get right, not a one-off like this for a platform driver.
> Hopefully that will not cause much, if any, changes for your use of this
> in your driver, but let's see.
>
> thanks,
>
> greg k-h
>
Sure, can you provide me a link to patches or maybe the branch 
containing that work? I also think it would be good to have the link in 
Zulip discussion for Platform Device and Driver.


Ayush Singh