From patchwork Thu Jul 27 05:42:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 710038 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 B356AC001E0 for ; Thu, 27 Jul 2023 05:46:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232432AbjG0Fq4 (ORCPT ); Thu, 27 Jul 2023 01:46:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35142 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230296AbjG0Fqe (ORCPT ); Thu, 27 Jul 2023 01:46:34 -0400 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 089E63C12 for ; Wed, 26 Jul 2023 22:45:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1690436754; x=1721972754; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Xzt893+X4Wu5dzLVX6QizHjEZJLuTS5bNsCjyNTAMLY=; b=gxFSuLapOh0WlkRpPxATH6E1Pj/AfEvRXvNh0y7byzzpQVuYJI3/UbaE zuPxwVHf1B39q8NUl7mL3uCYWXiXVWikmccSuPQ9/25+cDA+D+G12+DH0 qCDtBsyi3siq6e9F/BzpTGdJd6IL1FPQ/alb6Zkm7Pz9Y3kCEUXZn2qNv irwEzjG7sw5NXHzGFnieS5QrjGfO/iN63V+ibe4rVl91QT16dwxdn7XQl 8I8izuLVvTbIQwh8luwjdRLmetjYQ/drWTboZbpLdbtkF69PdX2dX4XSa vMlrNWvkNTJaKV/361Xts7UpJVuZ17unSwN+YphKB8FOB//5IjPe+Q9bK Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10783"; a="399150414" X-IronPort-AV: E=Sophos;i="6.01,234,1684825200"; d="scan'208";a="399150414" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jul 2023 22:44:36 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10783"; a="840584031" X-IronPort-AV: E=Sophos;i="6.01,234,1684825200"; d="scan'208";a="840584031" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jul 2023 22:44:30 -0700 Received: from punajuuri.localdomain (punajuuri.localdomain [192.168.240.130]) by kekkonen.fi.intel.com (Postfix) with ESMTP id 9C253120B5B; Thu, 27 Jul 2023 08:44:18 +0300 (EEST) Received: from sailus by punajuuri.localdomain with local (Exim 4.96) (envelope-from ) id 1qOtmD-004xqx-2k; Thu, 27 Jul 2023 08:43:05 +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 v6 10/38] media: Documentation: v4l: Document v4l2_async_nf_cleanup Date: Thu, 27 Jul 2023 08:42:27 +0300 Message-Id: <20230727054255.1183255-11-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230727054255.1183255-1-sakari.ailus@linux.intel.com> References: <20230727054255.1183255-1-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,