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From: Julien Massot <julien.massot@collabora.com>
Date: Thu, 02 May 2024 17:22:21 +0200
Subject: [PATCH 1/2] media: v4l: async: Add
 v4l2_async_nf_unregister_cleanup
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To: Sakari Ailus <sakari.ailus@linux.intel.com>, 
 Mauro Carvalho Chehab <mchehab@kernel.org>, 
 Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>, 
 Jacopo Mondi <jacopo+renesas@jmondi.org>, 
 Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>, 
 Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>, 
 =?utf-8?q?Niklas_S=C3=B6derlund?= <niklas.soderlund+renesas@ragnatech.se>, 
 Benjamin Mugnier <benjamin.mugnier@foss.st.com>, 
 Sylvain Petinot <sylvain.petinot@foss.st.com>, 
 Yong Zhi <yong.zhi@intel.com>, Bingbu Cao <bingbu.cao@intel.com>, 
 Dan Scally <djrscally@gmail.com>, Tianshu Qiu <tian.shu.qiu@intel.com>, 
 Eugen Hristev <eugen.hristev@collabora.com>, 
 Nicolas Ferre <nicolas.ferre@microchip.com>, 
 Alexandre Belloni <alexandre.belloni@bootlin.com>, 
 Claudiu Beznea <claudiu.beznea@tuxon.dev>, 
 Maxime Ripard <mripard@kernel.org>, Rui Miguel Silva <rmfrfs@gmail.com>, 
 Martin Kepplinger <martink@posteo.de>, Purism Kernel Team <kernel@puri.sm>, 
 Shawn Guo <shawnguo@kernel.org>, Sascha Hauer <s.hauer@pengutronix.de>, 
 Pengutronix Kernel Team <kernel@pengutronix.de>, 
 Fabio Estevam <festevam@gmail.com>, Robert Foss <rfoss@kernel.org>, 
 Todor Tomov <todor.too@gmail.com>, 
 Bryan O'Donoghue <bryan.odonoghue@linaro.org>, 
 Bjorn Andersson <andersson@kernel.org>, 
 Konrad Dybcio <konrad.dybcio@linaro.org>, 
 Fabrizio Castro <fabrizio.castro.jz@renesas.com>, 
 Dafna Hirschfeld <dafna@fastmail.com>, Heiko Stuebner <heiko@sntech.de>, 
 Sylwester Nawrocki <s.nawrocki@samsung.com>, 
 Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>, 
 Alim Akhtar <alim.akhtar@samsung.com>, 
 Hugues Fruchet <hugues.fruchet@foss.st.com>, 
 Alain Volmat <alain.volmat@foss.st.com>, 
 Maxime Coquelin <mcoquelin.stm32@gmail.com>, 
 Alexandre Torgue <alexandre.torgue@foss.st.com>, 
 Chen-Yu Tsai <wens@csie.org>, Jernej Skrabec <jernej.skrabec@gmail.com>, 
 Samuel Holland <samuel@sholland.org>, Yong Deng <yong.deng@magewell.com>, 
 Paul Kocialkowski <paul.kocialkowski@bootlin.com>, 
 Benoit Parrot <bparrot@ti.com>, Jai Luthra <j-luthra@ti.com>, 
 Philipp Zabel <p.zabel@pengutronix.de>, Michal Simek <michal.simek@amd.com>, 
 Greg Kroah-Hartman <gregkh@linuxfoundation.org>, 
 Thierry Reding <thierry.reding@gmail.com>, 
 Jonathan Hunter <jonathanh@nvidia.com>, 
 Sowjanya Komatineni <skomatineni@nvidia.com>, 
 Luca Ceresoli <luca.ceresoli@bootlin.com>
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, 
 linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, 
 linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org, 
 linux-rockchip@lists.infradead.org, linux-samsung-soc@vger.kernel.org, 
 linux-stm32@st-md-mailman.stormreply.com, linux-sunxi@lists.linux.dev, 
 linux-staging@lists.linux.dev, linux-tegra@vger.kernel.org, 
 Julien Massot <julien.massot@collabora.com>, 
 Sakari Ailus <sakari.ailus@linux.intel.com>

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@iki.fi>
Signed-off-by: Julien Massot <julien.massot@collabora.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