From: sashiko-bot@kernel.org
To: "Johan Hovold" <johan@kernel.org>
Cc: linux-usb@vger.kernel.org
Subject: Re: [PATCH] USB: core: document purpose of interface parent reference
Date: Thu, 15 Oct 2026 07:59:44 +0000 [thread overview]
Message-ID: <sashiko-outbox-172441@kernel.org> (raw)
In-Reply-To: <20261015074831.1418677-1-johan@kernel.org>
> USB interfaces hold a reference to their parent USB device to make sure
> they do not outlive the parent.
>
> Add a comment explaining that this reference is specifically needed for
> asynchronous device resets and the device type need_parent_lock feature
> (to allow driver core to lock the parent when only holding a reference
> to the interface).
>
> See commits:
>
> 524134d42231 ("USB: don't cancel queued resets when unbinding drivers")
> af61396a992b ("driver core: fix parent lock use-after-free on USB disconnect")
>
> for further details.
>
> Signed-off-by: Johan Hovold <johan@kernel.org>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261015074831.1418677-1-johan@kernel.org?part=1
next prev parent reply other threads:[~2026-10-15 7:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-15 7:48 [PATCH] USB: core: document purpose of interface parent reference Johan Hovold
2026-10-15 7:59 ` sashiko-bot [this message]
2026-10-15 8:08 ` Danilo Krummrich
2026-10-15 8:28 ` Johan Hovold
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