From patchwork Tue Jun 14 19:11:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Elder X-Patchwork-Id: 12881476 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 91028C433EF for ; Tue, 14 Jun 2022 19:14:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357798AbiFNTOn (ORCPT ); Tue, 14 Jun 2022 15:14:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55814 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345388AbiFNTOm (ORCPT ); Tue, 14 Jun 2022 15:14:42 -0400 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1ACB9764E for ; Tue, 14 Jun 2022 12:14:40 -0700 (PDT) Received: from pyrite.rasen.tech (softbank036240126034.bbtec.net [36.240.126.34]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 4B32AD96; Tue, 14 Jun 2022 21:14:35 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1655234078; bh=KDwDrnorXMslawjormLxIyDw9bPVJZXe9XsdxnbPr/k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PpL4s2SDYMgXlHEZ97eD37Buy9iav1AECyETYFBjKdI/RmWrZUA4WyJidJUu8L/Cn 3C58NC+QpUeOlOvJYPQa0KwFVgrarQS5auQ5uXETjFUAZ2C+bzqYkkPMXyIA+9OSoO x/i2iZeKOkrO8LmeOM/flAX6xOnUyax+r/AQh9TE= From: Paul Elder To: linux-media@vger.kernel.org Cc: Paul Elder , dafna@fastmail.com, heiko@sntech.de, laurent.pinchart@ideasonboard.com, jeanmichel.hautbois@ideasonboard.com, jacopo@jmondi.org, djrscally@gmail.com, helen.koike@collabora.com, linux-rockchip@lists.infradead.org Subject: [PATCH 42/55] media: rkisp1: Use fwnode_graph_for_each_endpoint Date: Wed, 15 Jun 2022 04:11:14 +0900 Message-Id: <20220614191127.3420492-43-paul.elder@ideasonboard.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220614191127.3420492-1-paul.elder@ideasonboard.com> References: <20220614191127.3420492-1-paul.elder@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org When registering the notifier, replace the manual while loop with fwnode_graph_for_each_endpoint. This simplifies error handling. Signed-off-by: Paul Elder Reviewed-by: Laurent Pinchart --- .../platform/rockchip/rkisp1/rkisp1-dev.c | 44 +++++++++---------- 1 file changed, 20 insertions(+), 24 deletions(-) diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c index a3e182c86bdd..00ace8224575 100644 --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c @@ -158,29 +158,28 @@ static const struct v4l2_async_notifier_operations rkisp1_subdev_notifier_ops = static int rkisp1_subdev_notifier_register(struct rkisp1_device *rkisp1) { struct v4l2_async_notifier *ntf = &rkisp1->notifier; - unsigned int next_id = 0; + struct fwnode_handle *fwnode = dev_fwnode(rkisp1->dev); + struct fwnode_handle *ep; unsigned int index = 0; - int ret; + int ret = 0; v4l2_async_nf_init(ntf); - while (1) { + ntf->ops = &rkisp1_subdev_notifier_ops; + + fwnode_graph_for_each_endpoint(fwnode, ep) { struct v4l2_fwnode_endpoint vep = { .bus_type = V4L2_MBUS_CSI2_DPHY }; struct rkisp1_sensor_async *rk_asd; - struct fwnode_handle *source = NULL; - struct fwnode_handle *ep; - - ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(rkisp1->dev), - 0, next_id, - FWNODE_GRAPH_ENDPOINT_NEXT); - if (!ep) - break; + struct fwnode_handle *source; ret = v4l2_fwnode_endpoint_parse(ep, &vep); - if (ret) - goto err_parse; + if (ret) { + dev_err(rkisp1->dev, "failed to parse endpoint %pfw\n", + ep); + break; + } source = fwnode_graph_get_remote_endpoint(ep); if (!source) { @@ -188,14 +187,15 @@ static int rkisp1_subdev_notifier_register(struct rkisp1_device *rkisp1) "endpoint %pfw has no remote endpoint\n", ep); ret = -ENODEV; - goto err_parse; + break; } rk_asd = v4l2_async_nf_add_fwnode(ntf, source, struct rkisp1_sensor_async); if (IS_ERR(rk_asd)) { + fwnode_handle_put(source); ret = PTR_ERR(rk_asd); - goto err_parse; + break; } rk_asd->index = index++; @@ -206,27 +206,23 @@ static int rkisp1_subdev_notifier_register(struct rkisp1_device *rkisp1) dev_dbg(rkisp1->dev, "registered ep id %d with %d lanes\n", vep.base.id, rk_asd->lanes); + } - next_id = vep.base.id + 1; - - fwnode_handle_put(ep); - - continue; -err_parse: + if (ret) { fwnode_handle_put(ep); - fwnode_handle_put(source); v4l2_async_nf_cleanup(ntf); return ret; } - if (next_id == 0) + if (!index) dev_dbg(rkisp1->dev, "no remote subdevice found\n"); - ntf->ops = &rkisp1_subdev_notifier_ops; + ret = v4l2_async_nf_register(&rkisp1->v4l2_dev, ntf); if (ret) { v4l2_async_nf_cleanup(ntf); return ret; } + return 0; }