From patchwork Fri Aug 23 09:20:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13774812 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1497EC52D7C for ; Fri, 23 Aug 2024 09:16:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=k03d7zRxQmrS40k8orsg3Qh84UlZHwHhOxRMdLjuUeI=; b=WJv7lnWBZw/so2 WGC8F51NZs1i4AqwqAfxp2fK3tKWi1CejAapZJCpBRUgvd1pQPF5c7DU1bITr+3ethYWEOd2FVgdI oQjT1cozmg9cYsSGykCqblRkXMjMwzUP/oN0PUhFmM89AsH/XWgWUGp1ZZGDjEVm0xKBr5PtBWj5N yg8QIdEdjcDqex1z2T/Lgs6q2svoiukREYYbdn3I16KkQKJftWkuHG9oGpqxc7+Pw3q3iWwjfTejO JMXrnJvCiYQXnXarYOEnuKcrjxONnIGePmKswyancnNCE6gEiq2DelVMCkIcVqTN7w9KBu1a3AolK Nfs/7uHQUjposP891mTw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1shQOy-0000000G3u5-1WLX; Fri, 23 Aug 2024 09:16:12 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1shQMI-0000000G33B-1wIx; Fri, 23 Aug 2024 09:13:28 +0000 Received: from mail.maildlp.com (unknown [172.19.163.252]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4WqvVF1hnczyQPX; Fri, 23 Aug 2024 17:12:37 +0800 (CST) Received: from kwepemh500013.china.huawei.com (unknown [7.202.181.146]) by mail.maildlp.com (Postfix) with ESMTPS id 05D831800D2; Fri, 23 Aug 2024 17:13:19 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemh500013.china.huawei.com (7.202.181.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 23 Aug 2024 17:13:18 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , CC: Subject: [PATCH -next 1/5] drm/rockchip: Use for_each_child_of_node_scoped() Date: Fri, 23 Aug 2024 17:20:49 +0800 Message-ID: <20240823092053.3170445-2-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240823092053.3170445-1-ruanjinjie@huawei.com> References: <20240823092053.3170445-1-ruanjinjie@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemh500013.china.huawei.com (7.202.181.146) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240823_021326_792301_3B5B7FF3 X-CRM114-Status: GOOD ( 10.31 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Avoids the need for manual cleanup of_node_put() in early exits from the loop. Signed-off-by: Jinjie Ruan Reviewed-by: Heiko Stuebner --- drivers/gpu/drm/rockchip/rockchip_lvds.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c index 9a01aa450741..f5b3f18794dd 100644 --- a/drivers/gpu/drm/rockchip/rockchip_lvds.c +++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c @@ -548,7 +548,7 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master, struct drm_encoder *encoder; struct drm_connector *connector; struct device_node *remote = NULL; - struct device_node *port, *endpoint; + struct device_node *port; int ret = 0, child_count = 0; const char *name; u32 endpoint_id = 0; @@ -560,15 +560,13 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master, "can't found port point, please init lvds panel port!\n"); return -EINVAL; } - for_each_child_of_node(port, endpoint) { + for_each_child_of_node_scoped(port, endpoint) { child_count++; of_property_read_u32(endpoint, "reg", &endpoint_id); ret = drm_of_find_panel_or_bridge(dev->of_node, 1, endpoint_id, &lvds->panel, &lvds->bridge); - if (!ret) { - of_node_put(endpoint); + if (!ret) break; - } } if (!child_count) { DRM_DEV_ERROR(dev, "lvds port does not have any children\n"); From patchwork Fri Aug 23 09:20:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13774827 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1A81CC531DC for ; Fri, 23 Aug 2024 09:18:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=d8vsssQbYjB9GMcT6HxouZ2FRm0rbaDg8Rp8bij/6Bc=; b=gqX9beHIZxCk0q GVFRy12TgISSFDW2fODe9rVZO/K2z4tNEQKAYUvZmb5+9Gpx6/qYsj8Q0NJItVJrTnwluLGNV+Ena gFVF8EyI+HGfjFq9rcYhbbjC/81Q/u2ktWsreib+BsJ25Hfr+ZJbFzPcXg0jm2XmdeUC9hcb+zbuM JUIvvqHQ1q+mL0w0YlMq1xb5pYAg1WMR2iR13k5z9kCxsx5d+3H0BJPcS76ptmzN5TLzqQd5mOFqf IRXS9G4YNKzLxK3TBV6+CGQrfPCJxXD9Gq+G1JYMrPsWfXe6G8s1p6YN+meJ6l5Y3i4dsrdNxRdQy ahk/jfQS2j/rUs0k2bTA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1shQRA-0000000G4Pz-24kE; Fri, 23 Aug 2024 09:18:29 +0000 Received: from szxga05-in.huawei.com ([45.249.212.191]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1shQMJ-0000000G33E-25lI; Fri, 23 Aug 2024 09:13:30 +0000 Received: from mail.maildlp.com (unknown [172.19.163.44]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4WqvVz08Fbz1j6rK; Fri, 23 Aug 2024 17:13:15 +0800 (CST) Received: from kwepemh500013.china.huawei.com (unknown [7.202.181.146]) by mail.maildlp.com (Postfix) with ESMTPS id 9A1921402C7; Fri, 23 Aug 2024 17:13:19 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemh500013.china.huawei.com (7.202.181.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 23 Aug 2024 17:13:18 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , CC: Subject: [PATCH -next 2/5] drm/mediatek: Fix missing of_node_put() for mtk_drm_get_all_drm_priv() Date: Fri, 23 Aug 2024 17:20:50 +0800 Message-ID: <20240823092053.3170445-3-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240823092053.3170445-1-ruanjinjie@huawei.com> References: <20240823092053.3170445-1-ruanjinjie@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemh500013.china.huawei.com (7.202.181.146) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240823_021327_872975_B32B009B X-CRM114-Status: GOOD ( 11.48 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org In mtk_drm_get_all_drm_priv(), break in for_each_child_of_node() should call of_node_put() to avoid child node resource leak, use for_each_child_of_node_scoped() to fix it. And avoid the need for manual cleanup of_node_put() in early exits from the loop for another one. Fixes: d761b9450e31 ("drm/mediatek: Add cnt checking for coverity issue") Signed-off-by: Jinjie Ruan --- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 77b50c56c124..41aff0183cbd 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -371,12 +371,11 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev) struct mtk_drm_private *temp_drm_priv; struct device_node *phandle = dev->parent->of_node; const struct of_device_id *of_id; - struct device_node *node; struct device *drm_dev; unsigned int cnt = 0; int i, j; - for_each_child_of_node(phandle->parent, node) { + for_each_child_of_node_scoped(phandle->parent, node) { struct platform_device *pdev; of_id = of_match_node(mtk_drm_of_ids, node); @@ -828,7 +827,6 @@ static int mtk_drm_probe(struct platform_device *pdev) struct device_node *phandle = dev->parent->of_node; const struct of_device_id *of_id; struct mtk_drm_private *private; - struct device_node *node; struct component_match *match = NULL; struct platform_device *ovl_adaptor; int ret; @@ -869,7 +867,7 @@ static int mtk_drm_probe(struct platform_device *pdev) } /* Iterate over sibling DISP function blocks */ - for_each_child_of_node(phandle->parent, node) { + for_each_child_of_node_scoped(phandle->parent, node) { const struct of_device_id *of_id; enum mtk_ddp_comp_type comp_type; int comp_id; @@ -933,10 +931,8 @@ static int mtk_drm_probe(struct platform_device *pdev) } ret = mtk_ddp_comp_init(node, &private->ddp_comp[comp_id], comp_id); - if (ret) { - of_node_put(node); + if (ret) goto err_node; - } } if (!private->mutex_node) { From patchwork Fri Aug 23 09:20:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13774829 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BCF43C531DC for ; Fri, 23 Aug 2024 09:20:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=H4hPFFVUkVKeImD6Jy49agHPdpt2lhhndltHiDnJZJU=; b=QZb/wTFjNde/iH dXL8+PkcAR2HJdW+NoAnXA+zRwmFu66g8JT2eZP7hHtHY0sy6YdBw7zNMTMpaJT5l+mjWHiUocLY6 /BIKLSf8BrzdFu024c4Jlb6+ksrXLhjMxlGvhiALi3BouDzLZmA3T+r5hbraF5xRxjaQ+Mo4pUfb8 cX6osYZs/FVhsIuQRj5LqkVo/OaM8yivwUQZpVsRad0QU0C8v7Snu6cjae2WG1V6xT8T7smN9Lgnz TR/DXK2ir2kQdrGOmlESqRZT2xC7864tCfGL6h1YZ+2xmlXEAHCs7Pi1COx12ts6gMjubXz37k3aI gJhfeDtMoUp9lMj1AOiQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1shQSe-0000000G4ue-2qQV; Fri, 23 Aug 2024 09:20:00 +0000 Received: from szxga06-in.huawei.com ([45.249.212.32]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1shQMJ-0000000G33N-47CO; Fri, 23 Aug 2024 09:13:30 +0000 Received: from mail.maildlp.com (unknown [172.19.88.214]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4WqvSr5x12z1xvwT; Fri, 23 Aug 2024 17:11:24 +0800 (CST) Received: from kwepemh500013.china.huawei.com (unknown [7.202.181.146]) by mail.maildlp.com (Postfix) with ESMTPS id 36B161A016C; Fri, 23 Aug 2024 17:13:20 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemh500013.china.huawei.com (7.202.181.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 23 Aug 2024 17:13:19 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , CC: Subject: [PATCH -next 3/5] drm: of: Use for_each_child_of_node_scoped() Date: Fri, 23 Aug 2024 17:20:51 +0800 Message-ID: <20240823092053.3170445-4-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240823092053.3170445-1-ruanjinjie@huawei.com> References: <20240823092053.3170445-1-ruanjinjie@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemh500013.china.huawei.com (7.202.181.146) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240823_021328_310774_C3D848EF X-CRM114-Status: UNSURE ( 9.46 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Avoids the need for manual cleanup of_node_put() in early exits from the loop. Signed-off-by: Jinjie Ruan --- drivers/gpu/drm/drm_of.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c index 177b600895d3..41d9288c97a7 100644 --- a/drivers/gpu/drm/drm_of.c +++ b/drivers/gpu/drm/drm_of.c @@ -304,10 +304,9 @@ static int drm_of_lvds_get_port_pixels_type(struct device_node *port_node) static int drm_of_lvds_get_remote_pixels_type( const struct device_node *port_node) { - struct device_node *endpoint = NULL; int pixels_type = -EPIPE; - for_each_child_of_node(port_node, endpoint) { + for_each_child_of_node_scoped(port_node, endpoint) { struct device_node *remote_port; int current_pt; @@ -315,10 +314,8 @@ static int drm_of_lvds_get_remote_pixels_type( continue; remote_port = of_graph_get_remote_port(endpoint); - if (!remote_port) { - of_node_put(endpoint); + if (!remote_port) return -EPIPE; - } current_pt = drm_of_lvds_get_port_pixels_type(remote_port); of_node_put(remote_port); @@ -332,10 +329,8 @@ static int drm_of_lvds_get_remote_pixels_type( * configurations by passing the endpoints explicitly to * drm_of_lvds_get_dual_link_pixel_order(). */ - if (!current_pt || pixels_type != current_pt) { - of_node_put(endpoint); + if (!current_pt || pixels_type != current_pt) return -EINVAL; - } } return pixels_type; From patchwork Fri Aug 23 09:20:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13774828 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 32731C531DC for ; Fri, 23 Aug 2024 09:19:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=MXtaG0J7AV58UagQUOfS3SCKwfiajHpEHCV2uYfIbTc=; b=0jAZm7AqJp7ixh 3BNjt+yuuNmyYX+Mt6s3SitGkR82loZtYx2rNyvG+L4/R9dHBFhlkOqQjKrxvvGKkSUoUb3QINlns dtmuz4lZ/Ru0PKs19EFx1xPwpXwqXaSjssPV1zvLqvqkKMligY8vw+SZSNCR8Uv3n/jbnE3I4Sxz/ e0ys88zRcvNWRsbA3G65djXRFgTrReI9voYtEZKaovtM+oaOwnoP/oGB2Q1yAvrLxa76LkapTvw1Y bVDICjCI3Zq2X+qqKTvC6tCOifuD9J5bvk78G0RrekG6fR7Rg71JF+swzc77uyftiwB2eJ9guMCn6 3L+iCwKjSuxNWoiv/R7A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1shQRt-0000000G4f0-3yT3; Fri, 23 Aug 2024 09:19:13 +0000 Received: from szxga06-in.huawei.com ([45.249.212.32]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1shQMJ-0000000G33P-38lI; Fri, 23 Aug 2024 09:13:30 +0000 Received: from mail.maildlp.com (unknown [172.19.162.112]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4WqvSs3FRlz1xvwW; Fri, 23 Aug 2024 17:11:25 +0800 (CST) Received: from kwepemh500013.china.huawei.com (unknown [7.202.181.146]) by mail.maildlp.com (Postfix) with ESMTPS id CDDF914013B; Fri, 23 Aug 2024 17:13:20 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemh500013.china.huawei.com (7.202.181.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 23 Aug 2024 17:13:20 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , CC: Subject: [PATCH -next 4/5] drm/nouveau: Use for_each_child_of_node_scoped() Date: Fri, 23 Aug 2024 17:20:52 +0800 Message-ID: <20240823092053.3170445-5-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240823092053.3170445-1-ruanjinjie@huawei.com> References: <20240823092053.3170445-1-ruanjinjie@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemh500013.china.huawei.com (7.202.181.146) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240823_021328_114524_29B6B05C X-CRM114-Status: UNSURE ( 9.34 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Avoids the need for manual cleanup of_node_put() in early exits from the loop. Signed-off-by: Jinjie Ruan --- drivers/gpu/drm/nouveau/nouveau_connector.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c index b06aa473102b..8d5c9c74cbb9 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -477,14 +477,14 @@ nouveau_connector_of_detect(struct drm_connector *connector) struct nouveau_connector *nv_connector = nouveau_connector(connector); struct nouveau_encoder *nv_encoder; struct pci_dev *pdev = to_pci_dev(dev->dev); - struct device_node *cn, *dn = pci_device_to_OF_node(pdev); + struct device_node *dn = pci_device_to_OF_node(pdev); if (!dn || !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) || (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG)))) return NULL; - for_each_child_of_node(dn, cn) { + for_each_child_of_node_scoped(dn, cn) { const char *name = of_get_property(cn, "name", NULL); const void *edid = of_get_property(cn, "EDID", NULL); int idx = name ? name[strlen(name) - 1] - 'A' : 0; @@ -492,7 +492,6 @@ nouveau_connector_of_detect(struct drm_connector *connector) if (nv_encoder->dcb->i2c_index == idx && edid) { nv_connector->edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL); - of_node_put(cn); return nv_encoder; } } From patchwork Fri Aug 23 09:20:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13774814 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 50F8EC531DC for ; Fri, 23 Aug 2024 09:17:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Nc0w8n3sHT7SSWhS7zkFuEbcsYBASbHNYI2rx4Iwd68=; b=vn2u5Uhl/jcrZ/ +GF6ndyQxwpPcrgeqQLa8cfWgsw18DnSs8fXWDi3xvu2FD8UT5rBMMGpHAc0/GhWcwPmgDmNZ0C/k 3krOese3unO8LntokLUyb2hKUMagNX8G+FiEPbA2niV3/pHQH2OYb8FC/TNnYa5U2arOxLvcM7j0C kH38uhPx4nJJRMucuAUg7VDU08BlchNsE9C0GUYr4itHqzkHDQuaux8z772Of85PvMCdlLWTeUM4r ++hyWO5JZoGy4piDLt95gb2a/KGiTND6zy6zkXRGWkWzepH3/SRa6dsYXBcjc5VDoWY5kxgvZrtVT Nj0yI0fSzpZexr2Ckkow==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1shQQP-0000000G4Bx-2QnX; Fri, 23 Aug 2024 09:17:41 +0000 Received: from szxga08-in.huawei.com ([45.249.212.255]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1shQMI-0000000G33C-3FBW; Fri, 23 Aug 2024 09:13:29 +0000 Received: from mail.maildlp.com (unknown [172.19.163.48]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4WqvVH6mtQz13dVH; Fri, 23 Aug 2024 17:12:39 +0800 (CST) Received: from kwepemh500013.china.huawei.com (unknown [7.202.181.146]) by mail.maildlp.com (Postfix) with ESMTPS id 6E37718005F; Fri, 23 Aug 2024 17:13:21 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemh500013.china.huawei.com (7.202.181.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 23 Aug 2024 17:13:20 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , CC: Subject: [PATCH -next 5/5] gpu: host1x: Use for_each_available_child_of_node_scoped() Date: Fri, 23 Aug 2024 17:20:53 +0800 Message-ID: <20240823092053.3170445-6-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240823092053.3170445-1-ruanjinjie@huawei.com> References: <20240823092053.3170445-1-ruanjinjie@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemh500013.china.huawei.com (7.202.181.146) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240823_021327_193325_CCA704D6 X-CRM114-Status: UNSURE ( 9.98 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Avoids the need for manual cleanup of_node_put() in early exits from the loop. Signed-off-by: Jinjie Ruan --- drivers/gpu/host1x/bus.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c index 8e09d6d328d2..344cc9e741c1 100644 --- a/drivers/gpu/host1x/bus.c +++ b/drivers/gpu/host1x/bus.c @@ -41,7 +41,6 @@ static int host1x_subdev_add(struct host1x_device *device, struct device_node *np) { struct host1x_subdev *subdev; - struct device_node *child; int err; subdev = kzalloc(sizeof(*subdev), GFP_KERNEL); @@ -56,13 +55,12 @@ static int host1x_subdev_add(struct host1x_device *device, mutex_unlock(&device->subdevs_lock); /* recursively add children */ - for_each_child_of_node(np, child) { + for_each_child_of_node_scoped(np, child) { if (of_match_node(driver->subdevs, child) && of_device_is_available(child)) { err = host1x_subdev_add(device, driver, child); if (err < 0) { /* XXX cleanup? */ - of_node_put(child); return err; } } @@ -90,17 +88,14 @@ static void host1x_subdev_del(struct host1x_subdev *subdev) static int host1x_device_parse_dt(struct host1x_device *device, struct host1x_driver *driver) { - struct device_node *np; int err; - for_each_child_of_node(device->dev.parent->of_node, np) { + for_each_child_of_node_scoped(device->dev.parent->of_node, np) { if (of_match_node(driver->subdevs, np) && of_device_is_available(np)) { err = host1x_subdev_add(device, driver, np); - if (err < 0) { - of_node_put(np); + if (err < 0) return err; - } } }