From patchwork Thu Jan 13 15:00:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 12712848 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 6305AC433F5 for ; Thu, 13 Jan 2022 15:01:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235907AbiAMPA7 (ORCPT ); Thu, 13 Jan 2022 10:00:59 -0500 Received: from perceval.ideasonboard.com ([213.167.242.64]:42086 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233641AbiAMPA7 (ORCPT ); Thu, 13 Jan 2022 10:00:59 -0500 Received: from pendragon.lan (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 6BDA497; Thu, 13 Jan 2022 16:00:57 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1642086057; bh=qWPVGJ5W1NvYRzHLPuu5I6zcACVC1HPzt4VgbkN/tJg=; h=From:To:Cc:Subject:Date:From; b=AmRMw9PFV+jiZHFZsozGHEVl33Q/YTo3qKE8n+SQit8I0W/5fXOCtnBiGodXaVY9+ R14XgCl0bHqyHASkkeILc9Qxq9neOH/KdVWDdEFHQfnI646tLV8EXWL2kg48Dvvcpp D70hY08pS2djiUQESgdgD0NCZF9zUv0gcvzVTB/0= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, Sakari Ailus , =?utf-8?q?Niklas_S=C3=B6derlund?= , Tomi Valkeinen , Jacopo Mondi Subject: [PATCH 0/2] media: mc: Simplify media pipeline start/stop Date: Thu, 13 Jan 2022 17:00:40 +0200 Message-Id: <20220113150042.15630-1-laurent.pinchart+renesas@ideasonboard.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Hello, This small series simplifies the implementation of the media_pipeline_start() function (and to a lesser extend, the media_pipeline_stop() function as well) by avoiding unnecessary graph walks. Patch 1/2 adds a small inline helper function to avoid direct access to the media_entity.stream_count field in drivers, making it easier in patch 2/2 to rework the implementation (dropping the stream_count field) without disturbing drivers. Please see patch 2/2 for a detailed explanation of the simplification. Laurent Pinchart (2): media: media-entity: Add media_pad_is_streaming() helper function media: media-entity: Simplify media_pipeline_start() drivers/media/mc/mc-entity.c | 55 ++++++++----------- drivers/media/platform/exynos4-is/common.c | 5 +- drivers/media/platform/exynos4-is/fimc-isp.c | 2 +- drivers/media/platform/exynos4-is/fimc-lite.c | 6 +- drivers/media/platform/rcar-vin/rcar-core.c | 2 +- include/media/media-entity.h | 21 +++++-- 6 files changed, 48 insertions(+), 43 deletions(-) base-commit: 68b9bcc8a534cd11fe55f8bc82f948aae7d81b3c