From: "Danilo Krummrich" <dakr@kernel.org>
To: "Laurent Pinchart" <laurent.pinchart@ideasonboard.com>
Cc: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Johan Hovold" <johan@kernel.org>,
"Rafael J . Wysocki" <rafael@kernel.org>,
"Tzung-Bi Shih" <tzungbi@kernel.org>,
"Bartosz Golaszewski" <bartosz.golaszewski@oss.qualcomm.com>,
"Linus Walleij" <linusw@kernel.org>,
"Jonathan Corbet" <corbet@lwn.net>,
"Shuah Khan" <shuah@kernel.org>,
"Wolfram Sang" <wsa+renesas@sang-engineering.com>,
"Simona Vetter" <simona.vetter@ffwll.ch>,
"Dan Williams" <dan.j.williams@intel.com>,
"Jason Gunthorpe" <jgg@nvidia.com>, <linux-doc@vger.kernel.org>,
<linux-kselftest@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/3] Revert "revocable: Revocable resource management"
Date: Sun, 25 Jan 2026 15:07:41 +0100 [thread overview]
Message-ID: <DFXQ915MAG5K.2KYVQOTF056N5@kernel.org> (raw)
In-Reply-To: <20260125132250.GP215800@killaraus>
On Sun Jan 25, 2026 at 2:22 PM CET, Laurent Pinchart wrote:
> It's the wrong solution for most cases, if not all. It will spread in drivers
> and then become another big piece of technical debt we'll wish we had never
> merged.
It is a matter of how the revocable pattern is adopted. I.e. I don't think
drivers should create instances of revocable (device) resources by themselves.
Instead, I think it should be up to the corresponding subsystems to adopt the
pattern in the way necessary and make it accessible to drivers instead.
> We know what the right solution to the cdev race is
So, what is it? Assuming that this is what you are referring to, how do you
prevent accesses to (potentially freed) device resources after the bus device
has been unbound from the driver for subsystems that may still call back into
the driver after device unbind?
next prev parent reply other threads:[~2026-01-25 14:07 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-24 17:05 [PATCH 0/3] Revert "revocable: Revocable resource management" Johan Hovold
2026-01-24 17:05 ` [PATCH 1/3] Revert "selftests: revocable: Add kselftest cases" Johan Hovold
2026-01-24 17:05 ` [PATCH 2/3] Revert "revocable: Add Kunit test cases" Johan Hovold
2026-01-24 17:05 ` [PATCH 3/3] Revert "revocable: Revocable resource management" Johan Hovold
2026-01-24 17:37 ` Johan Hovold
2026-01-24 17:46 ` Danilo Krummrich
2026-01-26 13:20 ` Johan Hovold
2026-01-27 15:57 ` Tzung-Bi Shih
2026-01-24 18:42 ` [PATCH 0/3] " Laurent Pinchart
2026-01-24 19:08 ` Danilo Krummrich
2026-01-25 12:47 ` Greg Kroah-Hartman
2026-01-25 13:22 ` Laurent Pinchart
2026-01-25 14:07 ` Danilo Krummrich [this message]
2026-01-29 1:09 ` Laurent Pinchart
2026-01-25 13:24 ` Laurent Pinchart
2026-01-25 17:53 ` Danilo Krummrich
2026-01-26 0:07 ` Jason Gunthorpe
2026-01-26 16:08 ` Danilo Krummrich
2026-01-26 17:07 ` Jason Gunthorpe
2026-01-26 22:36 ` Danilo Krummrich
2026-01-28 23:40 ` Laurent Pinchart
2026-01-26 13:50 ` Johan Hovold
2026-01-27 21:18 ` Bartosz Golaszewski
2026-01-27 23:52 ` Jason Gunthorpe
2026-01-28 9:40 ` Bartosz Golaszewski
2026-01-28 10:01 ` Wolfram Sang
2026-01-28 15:05 ` Jason Gunthorpe
2026-01-28 15:20 ` Bartosz Golaszewski
2026-01-28 16:01 ` Jason Gunthorpe
2026-01-30 11:27 ` Bartosz Golaszewski
2026-01-28 16:58 ` Wolfram Sang
2026-01-29 1:08 ` Laurent Pinchart
2026-01-29 1:23 ` Jason Gunthorpe
2026-01-29 3:42 ` dan.j.williams
2026-01-29 9:56 ` Danilo Krummrich
2026-01-29 10:43 ` Laurent Pinchart
2026-01-30 0:36 ` dan.j.williams
2026-01-29 10:38 ` Laurent Pinchart
2026-01-29 13:34 ` Jason Gunthorpe
2026-01-29 14:52 ` Laurent Pinchart
2026-01-29 22:29 ` Danilo Krummrich
2026-01-30 9:10 ` Laurent Pinchart
2026-02-03 9:10 ` Maxime Ripard
2026-02-03 13:59 ` Laurent Pinchart
2026-01-28 15:48 ` Johan Hovold
2026-01-29 9:11 ` Bartosz Golaszewski
2026-01-29 10:56 ` Laurent Pinchart
2026-01-29 13:50 ` Bartosz Golaszewski
2026-01-29 14:28 ` Jason Gunthorpe
2026-01-29 14:45 ` Laurent Pinchart
2026-01-29 14:49 ` Laurent Pinchart
2026-01-29 22:00 ` Danilo Krummrich
2026-01-30 11:19 ` Bartosz Golaszewski
2026-01-29 13:27 ` Linus Walleij
2026-02-03 12:15 ` Johan Hovold
2026-02-03 12:26 ` Greg Kroah-Hartman
2026-02-03 12:30 ` [PATCH] driver core: disable revocable code from build Greg Kroah-Hartman
2026-02-03 13:20 ` Danilo Krummrich
2026-02-04 2:14 ` Tzung-Bi Shih
2026-02-04 5:28 ` [PATCH] selftests: Disable " Tzung-Bi Shih
2026-02-04 8:21 ` Greg Kroah-Hartman
2026-02-03 13:57 ` [PATCH 0/3] Revert "revocable: Revocable resource management" Laurent Pinchart
2026-02-03 15:44 ` Greg Kroah-Hartman
2026-02-04 14:36 ` Johan Hovold
2026-01-27 15:57 ` Tzung-Bi Shih
2026-01-28 14:23 ` Johan Hovold
2026-01-28 23:28 ` Laurent Pinchart
2026-01-29 15:01 ` Tzung-Bi Shih
2026-01-30 9:12 ` Laurent Pinchart
2026-01-30 17:41 ` Danilo Krummrich
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