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 EB29AFF8868 for ; Tue, 28 Apr 2026 09:16:47 +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=IlJi1iPD8S3oBFXTvLf+zpfxjc4D0IFZgnv6l3mfmfw=; b=y8NlvUx2dY2n7MqQ5FH54+cV9D ZygORd9GE0qQ65HX+fL/ekFO66zJIIEhQB0eak9qOEtVesEn1SaIYy2IOHSRUfz7mb8PHxdqODV2R Qtes33T0NnEXU4/6F2+Kn7EofzFj/RWGky7ioUJ2/zO1jZcIzbPgM8eB5psxdOkbbIkzFALj40yf3 zv3QVJJIsDOhDwyDYnCyeiPkPB9HS+yhfZP8pyGXDGpPDmcrfSQ0WhwwgGVbIJF1UHnsUu1W3PQxf EcvoZFonfAp1YT0uvfn5NrSjhY5bXrZqp+CJgEAL8L4Y3UiwCFvuitGgw3pSjXuPWWGzxHQDQlDF4 dsYcH05Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wHeYe-000000013rC-46Tc; Tue, 28 Apr 2026 09:16:44 +0000 Received: from smtpout-03.galae.net ([185.246.85.4]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wHeYZ-000000013lz-0Fub for linux-arm-kernel@lists.infradead.org; Tue, 28 Apr 2026 09:16:43 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-03.galae.net (Postfix) with ESMTPS id 8A7674E42B61; Tue, 28 Apr 2026 09:16:37 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 5F203601D0; Tue, 28 Apr 2026 09:16:37 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 7546B10728590; Tue, 28 Apr 2026 11:16:31 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1777367795; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=IlJi1iPD8S3oBFXTvLf+zpfxjc4D0IFZgnv6l3mfmfw=; b=MaVSKeYajeSg0mjQmkK23UyHedLfCtcWDtHNulWWFnN/GaUA93w2EcBTepHCUIehlMlaSZ +pSV4VJjBwtyXg++gWiuRggf0cSn3XutaOG/UZC5EpaiGWkQOOEz0aOw0AZs+uJKq5bFI8 A/CgaNVUQUhfJU+/YAO8X0hrbhbE2p1ygVci6NWQ7+pMF+qj2YtCkRRBmxqh2Ced9lQhgI 6o9GqW+TOREV3f0TO5qfS97IuiHQuxsgLW3B+J8QCsuiWvf5h1YkGplyTM2NyjSvSIsaqe iEQxTvuttQ7gFZUPYDANE/Vs/N0ctx5L/50A5pYwFihjtMMxh7a1n1hCrlfx5A== From: Luca Ceresoli Date: Tue, 28 Apr 2026 11:15:52 +0200 Subject: [PATCH v2 06/11] drm/bridge: lontium-lt9611uxc: 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-v2-6-4300744a1c47@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_021639_258751_2914EC77 X-CRM114-Status: GOOD ( 12.47 ) 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-lt9611uxc.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c index 11aab07d88df..9427cc2358ae 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c @@ -35,7 +35,6 @@ struct lt9611uxc { 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 */ @@ -284,7 +283,7 @@ static int lt9611uxc_bridge_attach(struct drm_bridge *bridge, { struct lt9611uxc *lt9611uxc = bridge_to_lt9611uxc(bridge); - return drm_bridge_attach(encoder, lt9611uxc->next_bridge, + return drm_bridge_attach(encoder, lt9611uxc->bridge.next_bridge, bridge, flags); } @@ -487,7 +486,11 @@ static int lt9611uxc_parse_dt(struct device *dev, lt9611uxc->dsi1_node = of_graph_get_remote_node(dev->of_node, 1, -1); - return drm_of_find_panel_or_bridge(dev->of_node, 2, -1, NULL, <9611uxc->next_bridge); + lt9611uxc->bridge.next_bridge = of_drm_get_bridge_by_endpoint(dev->of_node, 2, -1); + if (IS_ERR(lt9611uxc->bridge.next_bridge)) + return PTR_ERR(lt9611uxc->bridge.next_bridge); + + return 0; } static int lt9611uxc_gpio_init(struct lt9611uxc *lt9611uxc) -- 2.53.0