From mboxrd@z Thu Jan 1 00:00:00 1970 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 75334FF886D for ; Tue, 28 Apr 2026 09:16:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Xj+7EyWtqLA0saxXZPBQMk+VDQw/UBk6Y4BSe8yjAq4=; b=KZqugz04FzgOGEzPwy3PO/n9cX 815C6hzdB7EF9QSWxUb8QVt3Wzf3ZjKQ4zA0GljcmsoAOdqmOh7yaCzSk+WeILf3ApcSN1BVcOn3W qgZqjk/BP7QNcZbm3uJXZqo9NiU8Z/UbE1QppkxP6lMpgPFXw6esuYbKPRohvF9T+z4PrHy3+Wiw2 ROMK3RcKN45kvWvCcfiV/4qbRzGgNHwVZDjkvSuvdOOHzoZ/ZJWWKRmnBoIJ448CbuJfHBnlMxii5 BtD7xbatCPu0haaFhh6G1AyYdQy5EsWjJuzryqUUUV0rWb4LSjBh8sFT8DKRA0KIzH8nQee4bQGLp poCKKQNA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wHeYp-000000013zk-2dvU; Tue, 28 Apr 2026 09:16:55 +0000 Received: from smtpout-02.galae.net ([185.246.84.56]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wHeYm-000000013wA-33y0 for linux-arm-kernel@lists.infradead.org; Tue, 28 Apr 2026 09:16:54 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id 52BB51A346A; Tue, 28 Apr 2026 09:16:51 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 20804601D0; Tue, 28 Apr 2026 09:16:51 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 3D3FD10728590; Tue, 28 Apr 2026 11:16:45 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1777367809; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=Xj+7EyWtqLA0saxXZPBQMk+VDQw/UBk6Y4BSe8yjAq4=; b=mgacal5Yb6iqLeaES/8xPqsrdMbHUc060TKg4ybxIIyUf3IJ9wo2BKYImPvKE5m5n6IgY5 OMXe4euPUcPIrEMklFmse7UFTd9DxpQBXwkxQykuqnPn+JUV1WMWgVKnQPA+XxoH0bvabw ba4QnxjPtXy8yMtt7j02johqpYjUdFokzD+G1mxSep2apMgQ1zOUHd3J2ZOV5eJhYaJumt lsHk2zsxsKuQGZ7xvGYRYiV/3YfH8Wddn0VefXkmiS0FBKiczGhr+KD87qnO8LGHGo8mi0 AdR9FdheKBstlMb2jQQx5PcbCBlcQTfIrlGcyxh2Yne3IDmhjf7cJRqCLK95tQ== From: Luca Ceresoli Date: Tue, 28 Apr 2026 11:15:55 +0200 Subject: [PATCH v2 09/11] drm/bridge: lt8713sx: switch to of_drm_get_bridge_by_endpoint() MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260428-drm-bridge-alloc-getput-panel_or_bridge-v2-9-4300744a1c47@bootlin.com> References: <20260428-drm-bridge-alloc-getput-panel_or_bridge-v2-0-4300744a1c47@bootlin.com> In-Reply-To: <20260428-drm-bridge-alloc-getput-panel_or_bridge-v2-0-4300744a1c47@bootlin.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , Tian Tao , Xinwei Kong , Sumit Semwal , John Stultz , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Tomi Valkeinen , Michal Simek Cc: Hui Pu , Ian Ray , Thomas Petazzoni , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, Luca Ceresoli X-Mailer: b4 0.15.2 X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260428_021652_919426_9A5AA13F X-CRM114-Status: GOOD ( 12.84 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This driver calls drm_of_find_panel_or_bridge() with a NULL pointer in the @panel parameter, thus using a reduced feature set of that function. Replace this call with the simpler of_drm_get_bridge_by_endpoint(). Since of_drm_get_bridge_by_endpoint() increases the refcount of the returned bridge, ensure it is put on removal. To achieve this, instead of adding an explicit drm_bridge_put(), migrate to the bridge::next_bridge pointer which is automatically put when the bridge is eventually freed. Signed-off-by: Luca Ceresoli --- drivers/gpu/drm/bridge/lontium-lt8713sx.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt8713sx.c b/drivers/gpu/drm/bridge/lontium-lt8713sx.c index 18fac6a46db4..cee485adf5e5 100644 --- a/drivers/gpu/drm/bridge/lontium-lt8713sx.c +++ b/drivers/gpu/drm/bridge/lontium-lt8713sx.c @@ -32,7 +32,6 @@ DECLARE_CRC8_TABLE(lt8713sx_crc_table); struct lt8713sx { struct device *dev; struct drm_bridge bridge; - struct drm_bridge *next_bridge; struct regmap *regmap; /* Protects all accesses to registers by stopping the on-chip MCU */ @@ -458,7 +457,7 @@ static int lt8713sx_bridge_attach(struct drm_bridge *bridge, struct lt8713sx *lt8713sx = container_of(bridge, struct lt8713sx, bridge); return drm_bridge_attach(encoder, - lt8713sx->next_bridge, + lt8713sx->bridge.next_bridge, bridge, flags); } @@ -537,10 +536,9 @@ static int lt8713sx_probe(struct i2c_client *client) if (IS_ERR(lt8713sx->regmap)) return dev_err_probe(dev, PTR_ERR(lt8713sx->regmap), "regmap i2c init failed\n"); - ret = drm_of_find_panel_or_bridge(lt8713sx->dev->of_node, 1, -1, NULL, - <8713sx->next_bridge); - if (ret < 0) - return ret; + lt8713sx->bridge.next_bridge = of_drm_get_bridge_by_endpoint(lt8713sx->dev->of_node, 1, -1); + if (IS_ERR(lt8713sx->bridge.next_bridge)) + return PTR_ERR(lt8713sx->bridge.next_bridge); ret = lt8713sx_gpio_init(lt8713sx); if (ret < 0) -- 2.53.0