linux-kernel - [PATCH 1/2] media: v4l: async: Add v4l2_async_nf_unregister

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Date: Thu, 02 May 2024 17:22:21 +0200
From: Julien Massot <julien.massot@...labora.com>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.com>, 
 Jacopo Mondi <jacopo+renesas@...ndi.org>, 
 Kieran Bingham <kieran.bingham+renesas@...asonboard.com>, 
 Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>, 
 Niklas Söderlund <niklas.soderlund+renesas@...natech.se>, 
 Benjamin Mugnier <benjamin.mugnier@...s.st.com>, 
 Sylvain Petinot <sylvain.petinot@...s.st.com>, 
 Yong Zhi <yong.zhi@...el.com>, Bingbu Cao <bingbu.cao@...el.com>, 
 Dan Scally <djrscally@...il.com>, Tianshu Qiu <tian.shu.qiu@...el.com>, 
 Eugen Hristev <eugen.hristev@...labora.com>, 
 Nicolas Ferre <nicolas.ferre@...rochip.com>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Claudiu Beznea <claudiu.beznea@...on.dev>, 
 Maxime Ripard <mripard@...nel.org>, Rui Miguel Silva <rmfrfs@...il.com>, 
 Martin Kepplinger <martink@...teo.de>, Purism Kernel Team <kernel@...i.sm>, 
 Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Robert Foss <rfoss@...nel.org>, 
 Todor Tomov <todor.too@...il.com>, 
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, 
 Fabrizio Castro <fabrizio.castro.jz@...esas.com>, 
 Dafna Hirschfeld <dafna@...tmail.com>, Heiko Stuebner <heiko@...ech.de>, 
 Sylwester Nawrocki <s.nawrocki@...sung.com>, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 Alim Akhtar <alim.akhtar@...sung.com>, 
 Hugues Fruchet <hugues.fruchet@...s.st.com>, 
 Alain Volmat <alain.volmat@...s.st.com>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Chen-Yu Tsai <wens@...e.org>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Samuel Holland <samuel@...lland.org>, Yong Deng <yong.deng@...ewell.com>, 
 Paul Kocialkowski <paul.kocialkowski@...tlin.com>, 
 Benoit Parrot <bparrot@...com>, Jai Luthra <j-luthra@...com>, 
 Philipp Zabel <p.zabel@...gutronix.de>, Michal Simek <michal.simek@....com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Jonathan Hunter <jonathanh@...dia.com>, 
 Sowjanya Komatineni <skomatineni@...dia.com>, 
 Luca Ceresoli <luca.ceresoli@...tlin.com>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, imx@...ts.linux.dev, 
 linux-arm-msm@...r.kernel.org, linux-renesas-soc@...r.kernel.org, 
 linux-rockchip@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, 
 linux-stm32@...md-mailman.stormreply.com, linux-sunxi@...ts.linux.dev, 
 linux-staging@...ts.linux.dev, linux-tegra@...r.kernel.org, 
 Julien Massot <julien.massot@...labora.com>, 
 Sakari Ailus <sakari.ailus@...ux.intel.com>
Subject: [PATCH 1/2] media: v4l: async: Add
 v4l2_async_nf_unregister_cleanup

Many drivers are calling v4l2_async_nf_unregister, and
v4l2_async_nf_cleanup, add a function to do it.

Suggested-by: Sakari Ailus <sakari.ailus@....fi>
Signed-off-by: Julien Massot <julien.massot@...labora.com>
---
 include/media/v4l2-async.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h
index f26c323e9c96..cdbe63c26779 100644
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -304,6 +304,23 @@ void v4l2_async_nf_unregister(struct v4l2_async_notifier *notifier);
  */
 void v4l2_async_nf_cleanup(struct v4l2_async_notifier *notifier);
 
+/**
+ * v4l2_async_nf_unregister_cleanup - unregister and clean up notifier resources
+ * @notifier: the notifier  the notifier to unregister and for which
+ *            the resources are to be cleaned up
+ *
+ * Unregister a subdevice asynchronous device and release memory resources
+ * related to a notifier.
+ * Convenient function to call v4l2_async_nf_unregister() and
+ * v4l2_async_nf_cleanup().
+ */
+static inline void
+v4l2_async_nf_unregister_cleanup(struct v4l2_async_notifier *notifier)
+{
+	v4l2_async_nf_unregister(notifier);
+	v4l2_async_nf_cleanup(notifier);
+};
+
 /**
  * v4l2_async_register_subdev - registers a sub-device to the asynchronous
  *	subdevice framework

-- 
2.44.0