From patchwork Mon Jul 17 13:18:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 13315755 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0ABE3C0015E for ; Mon, 17 Jul 2023 13:22:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231491AbjGQNWD (ORCPT ); Mon, 17 Jul 2023 09:22:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60070 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231611AbjGQNVj (ORCPT ); Mon, 17 Jul 2023 09:21:39 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F041110CF for ; Mon, 17 Jul 2023 06:20:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1689600060; x=1721136060; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Xzt893+X4Wu5dzLVX6QizHjEZJLuTS5bNsCjyNTAMLY=; b=eLmOvl/XQ4XgqgoD/Yicw+yDKg5jwhDqqDSAv59ls0II8z/3OfPgh4Wq h1+98zYiIckJPN8o5wnFBMN6j3P28tMcJd+LG0esJhGyN5YdSDNUgPmsg nBwRFyTlS5fi/1yRC5iu1YGoIADUyVmgEUdIB/rcC+RjZ83o4Y+xQRN42 ehf5isG66tmRr5pejHeQ+0Kb+FuKc+VhXI1XU9CMS9vOXlMiWcnnedtax nOe9y/Ob1tP6fku0h8xoiEz+KMrtSHKMduBQw9oosTRzct2zGe2JjtDph puasV5Rk/e9HbL3Q0xb+3FNqlQlO4QDTl2iOqE/VaumU3P9X9tX9uLBBq Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10774"; a="432097558" X-IronPort-AV: E=Sophos;i="6.01,211,1684825200"; d="scan'208";a="432097558" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jul 2023 06:20:36 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10774"; a="726541914" X-IronPort-AV: E=Sophos;i="6.01,211,1684825200"; d="scan'208";a="726541914" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jul 2023 06:20:27 -0700 Received: from punajuuri.localdomain (punajuuri.localdomain [192.168.240.130]) by kekkonen.fi.intel.com (Postfix) with ESMTP id E80D1120DF4; Mon, 17 Jul 2023 16:20:15 +0300 (EEST) Received: from sailus by punajuuri.localdomain with local (Exim 4.96) (envelope-from ) id 1qLO8G-004s0Z-0F; Mon, 17 Jul 2023 16:19:20 +0300 From: Sakari Ailus To: linux-media@vger.kernel.org Cc: laurent.pinchart@ideasonboard.com, Philipp Zabel , hverkuil@xs4all.nl, Francesco Dolcini , aishwarya.kothari@toradex.com, Robert Foss , Todor Tomov , Hyun Kwon , bingbu.cao@intel.com, niklas.soderlund@ragnatech.se, Kieran Bingham , Benjamin Mugnier , Sylvain Petinot , Eugen Hristev , Nicolas Ferre , Maxime Ripard , Rui Miguel Silva , Fabio Estevam , Bryan O'Donoghue , Sylwester Nawrocki , Dafna Hirschfeld , Hugues Fruchet , Yong Deng , Paul Kocialkowski , "Lad, Prabhakar" , Benoit Parrot , Steve Longerbeam , Thierry Reding , Jonathan Hunter , Sowjanya Komatineni , Marco Felsch Subject: [PATCH v5 10/38] media: Documentation: v4l: Document v4l2_async_nf_cleanup Date: Mon, 17 Jul 2023 16:18:41 +0300 Message-Id: <20230717131909.1160787-11-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230717131909.1160787-1-sakari.ailus@linux.intel.com> References: <20230717131909.1160787-1-sakari.ailus@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Document v4l2_async_nf_cleanup() which must be called before releasing an unregistered notifier's memory. Also remove the sentence regarding v4l2_async_nf_init() arguments --- those are documented in kerneldoc which is referred here. Signed-off-by: Sakari Ailus Tested-by: Lad Prabhakar # Renesas RZ/G2L SMARC --- Documentation/driver-api/media/v4l2-subdev.rst | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/Documentation/driver-api/media/v4l2-subdev.rst b/Documentation/driver-api/media/v4l2-subdev.rst index e463ab4a3413..327d444f34dc 100644 --- a/Documentation/driver-api/media/v4l2-subdev.rst +++ b/Documentation/driver-api/media/v4l2-subdev.rst @@ -198,12 +198,11 @@ picked up by bridge drivers. Asynchronous sub-device notifiers ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Bridge drivers in turn have to register a notifier object. This is -performed using the :c:func:`v4l2_async_nf_register` call. To -unregister the notifier the driver has to call -:c:func:`v4l2_async_nf_unregister`. The former of the two functions -takes two arguments: a pointer to struct :c:type:`v4l2_device` and a -pointer to struct :c:type:`v4l2_async_notifier`. +Bridge drivers in turn have to register a notifier object. This is performed +using the :c:func:`v4l2_async_nf_register` call. To unregister the notifier the +driver has to call :c:func:`v4l2_async_nf_unregister`. Before releasing memory +of an unregister notifier, it must be cleaned up by calling +:c:func:`v4l2_async_nf_cleanup`. Before registering the notifier, bridge drivers must do two things: first, the notifier must be initialized using the :c:func:`v4l2_async_nf_init`. Second,