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From: "Gary Guo" <gary@garyguo.net>
To: "Andreas Hindborg" <a.hindborg@kernel.org>,
	"Sang-Heon Jeon" <ekffu200098@gmail.com>, <boqun@kernel.org>,
	<fujita.tomonori@gmail.com>, <frederic@kernel.org>,
	<lyude@redhat.com>, <tglx@kernel.org>, <anna-maria@linutronix.de>,
	<jstultz@google.com>, <sboyd@kernel.org>
Cc: <rust-for-linux@vger.kernel.org>
Subject: Re: [PATCH] rust: time: add debug assertions for out-of-range input in fsleep()
Date: Sat, 09 May 2026 13:10:57 +0100	[thread overview]
Message-ID: <DIE4WB0VE43Z.2ALSYOD50N5X7@garyguo.net> (raw)
In-Reply-To: <87a4u96m4c.fsf@t14s.mail-host-address-is-not-set>

On Sat May 9, 2026 at 9:08 AM BST, Andreas Hindborg wrote:
> "Sang-Heon Jeon" <ekffu200098@gmail.com> writes:
>
>> fsleep() documents out-of-range input as a bug but does not check
>> it, unlike udelay(). Add `debug_assert!` calls to catch it in
>> debug builds.
>>
>> Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
>> ---
>> Hello,
>>
>> I found this small inconsistency while reading the code. The same
>> check was applied to udelay() [1] but does not seem to have been
>> extended to fsleep(). Please let me know if I have misunderstood
>> anything.
>>
>> [1] https://lore.kernel.org/all/20251103112958.2961517-2-fujita.tomonori@gmail.com
>>
>> Best Regards,
>> Sang-Heon Jeon
>
> Looks good to me. Could you add the warn_once and remove the todo as
> well? And add the warn_once to udelay as well, so both functions have
> same shape.

If `warn_once` is added then the debug assert would be unnecessary.

Best,
Gary

  reply	other threads:[~2026-05-09 12:11 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <qBPUAToMpl5CvVd22lUrJOgsVSuqVYKsjEHpbs1UK-VTO-vN8UFOa35fFMsYOHoBuUp9HcP65ljAxmLQMcGS9w==@protonmail.internalid>
2026-05-08 17:38 ` [PATCH] rust: time: add debug assertions for out-of-range input in fsleep() Sang-Heon Jeon
2026-05-09  6:41   ` Onur Özkan
2026-05-09  8:08   ` Andreas Hindborg
2026-05-09 12:10     ` Gary Guo [this message]
2026-05-09 14:36       ` Andreas Hindborg
2026-05-09 14:50         ` Gary Guo
2026-05-09 17:44           ` Andreas Hindborg

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