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From: "Benno Lossin" <lossin@kernel.org>
To: "Tamir Duberstein" <tamird@gmail.com>,
	"Danilo Krummrich" <dakr@kernel.org>,
	"David Airlie" <airlied@gmail.com>,
	"Simona Vetter" <simona@ffwll.ch>,
	"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>,
	"Andreas Hindborg" <a.hindborg@kernel.org>,
	"Alice Ryhl" <aliceryhl@google.com>,
	"Trevor Gross" <tmgross@umich.edu>,
	"Jens Axboe" <axboe@kernel.dk>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	"Brendan Higgins" <brendan.higgins@linux.dev>,
	"David Gow" <davidgow@google.com>, "Rae Moar" <rmoar@google.com>,
	"Lorenzo Stoakes" <lorenzo.stoakes@oracle.com>,
	"Vlastimil Babka" <vbabka@suse.cz>,
	"Liam R. Howlett" <Liam.Howlett@oracle.com>,
	"Uladzislau Rezki" <urezki@gmail.com>,
	"Alexandre Courbot" <acourbot@nvidia.com>,
	"Alexander Viro" <viro@zeniv.linux.org.uk>,
	"Christian Brauner" <brauner@kernel.org>,
	"Jan Kara" <jack@suse.cz>
Cc: <nouveau@lists.freedesktop.org>,
	<dri-devel@lists.freedesktop.org>, <linux-kernel@vger.kernel.org>,
	<rust-for-linux@vger.kernel.org>, <linux-block@vger.kernel.org>,
	<linux-kselftest@vger.kernel.org>, <kunit-dev@googlegroups.com>,
	<linux-fsdevel@vger.kernel.org>
Subject: Re: [PATCH v3 9/9] rust: device: use `kernel::{fmt,prelude::fmt!}`
Date: Thu, 14 Aug 2025 09:54:10 +0200	[thread overview]
Message-ID: <DC1ZLP61HJAL.3I2YF82Y4T7L9@kernel.org> (raw)
In-Reply-To: <20250813-core-cstr-fanout-1-v3-9-a15eca059c51@gmail.com>

On Wed Aug 13, 2025 at 5:39 PM CEST, Tamir Duberstein wrote:
> Reduce coupling to implementation details of the formatting machinery by
> avoiding direct use for `core`'s formatting traits and macros.
>
> Signed-off-by: Tamir Duberstein <tamird@gmail.com>

Reviewed-by: Benno Lossin <lossin@kernel.org>

> ---
>  rust/kernel/device/property.rs | 23 ++++++++++++-----------
>  1 file changed, 12 insertions(+), 11 deletions(-)
    
> @@ -413,9 +414,9 @@ fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
>                  // SAFETY: `fwnode_get_name_prefix` returns null or a
>                  // valid C string.
>                  let prefix = unsafe { CStr::from_char_ptr(prefix) };
> -                write!(f, "{prefix}")?;
> +                fmt::Display::fmt(prefix, f)?;
>              }
> -            write!(f, "{}", fwnode.display_name())?;

So we're not able to use `write!` with our `Display` or did you also
write a `FmtAdapter` wrapper for that? (don't think we need it now, just
wanted to know if we have this issue possibly in the future)

---
Cheers,
Benno

> +            fmt::Display::fmt(&fwnode.display_name(), f)?;
>          }
>  
>          Ok(())


      reply	other threads:[~2025-08-14  7:54 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-13 15:39 [PATCH v3 0/9] rust: use `kernel::{fmt,prelude::fmt!}` Tamir Duberstein
2025-08-13 15:39 ` [PATCH v3 1/9] gpu: nova-core: " Tamir Duberstein
2025-08-13 15:39 ` [PATCH v3 2/9] rust: alloc: " Tamir Duberstein
2025-08-13 15:39 ` [PATCH v3 3/9] rust: block: " Tamir Duberstein
2025-08-13 15:39 ` [PATCH v3 4/9] rust: device: " Tamir Duberstein
2025-08-13 15:39 ` [PATCH v3 5/9] rust: file: " Tamir Duberstein
2025-08-13 15:39 ` [PATCH v3 6/9] rust: kunit: " Tamir Duberstein
2025-08-13 15:39 ` [PATCH v3 7/9] rust: seq_file: " Tamir Duberstein
2025-08-13 15:39 ` [PATCH v3 8/9] rust: sync: " Tamir Duberstein
2025-08-13 15:39 ` [PATCH v3 9/9] rust: device: " Tamir Duberstein
2025-08-14  7:54   ` Benno Lossin [this message]

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