From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
"Mauro Carvalho Chehab" <mchehab@kernel.org>,
"Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>,
"Hans Verkuil" <hans.verkuil@cisco.com>,
"Sebastian Reichel" <sre@kernel.org>,
"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>
Subject: Re: [PATCH 2/2] media: v4l2-async: Make subdev notifier cleanup conditional
Date: Wed, 9 Jun 2021 15:27:35 +0300 [thread overview]
Message-ID: <20210609122735.GE3@paasikivi.fi.intel.com> (raw)
In-Reply-To: <20210609115457.822085-2-paul.kocialkowski@bootlin.com>
Hi Paul,
On Wed, Jun 09, 2021 at 01:54:57PM +0200, Paul Kocialkowski wrote:
> A dedicated subdev notified is registered when using the helper
> dedicated to sensors (v4l2_async_register_subdev_sensor_common),
> but this is not the case when a driver uses v4l2_async_register_subdev
> directly.
Is this a problem?
The notifier unregistration and cleanup functions should be safe to call on
a notifier that's not been initialised or registered. The same goes for
kfree with NULL argument.
--
Kind regards,
Sakari Ailus
next prev parent reply other threads:[~2021-06-09 12:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-09 11:54 [PATCH 1/2] media: v4l2-subdev: Fix documentation of the subdev_notifier member Paul Kocialkowski
2021-06-09 11:54 ` [PATCH 2/2] media: v4l2-async: Make subdev notifier cleanup conditional Paul Kocialkowski
2021-06-09 12:27 ` Sakari Ailus [this message]
2021-06-09 13:01 ` Paul Kocialkowski
2021-06-09 12:30 ` [PATCH 1/2] media: v4l2-subdev: Fix documentation of the subdev_notifier member Sakari Ailus
2021-06-09 13:03 ` Paul Kocialkowski
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