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 CED9DCD342C for ; Mon, 4 May 2026 10:45:58 +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=T2up0nNcnVaU0yQbv4uPCscdyC0ZWVrNHuUZWb1EmZw=; b=bfZBZJil5wHdBdj6Hsj8UjNhBB 5qbyKlUTEZJdvoDXpw/3blF0QqRcbKHp/ttcQCOS+W1BiBiUHW+R795CyTRggWmh9O1flO/YHljBY RSgtPn1kARqYuEg5K/lQuS8f2ILUf9NI2NCmHeL0/gHjgn2+I7VpsnimMZ0r0D8TOBZp7MFZP8lez +Y1VY0NrmFw2RMzNH8az+03ejyfpXNZA3O+uIIgkf0dYfQAO10bVBzIEI31MtXZ0LpSURBMO8jmbA 9l21WBlQq/7E9/vXK06hQOOaI6GMohBXG5vHbQwENzaW7OHuSNuXdi5GskgN27F96wRAyBU53j7Cg ZX3fZC8w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wJqoE-0000000Cxox-419i; Mon, 04 May 2026 10:45:54 +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 1wJqoC-0000000CxlY-2YfL for linux-arm-kernel@lists.infradead.org; Mon, 04 May 2026 10:45:53 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-03.galae.net (Postfix) with ESMTPS id 31B1C4E42BBC; Mon, 4 May 2026 10:45:51 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 05EDB5FD5F; Mon, 4 May 2026 10:45:51 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 75DCD11AD25EC; Mon, 4 May 2026 12:45:45 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1777891549; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=T2up0nNcnVaU0yQbv4uPCscdyC0ZWVrNHuUZWb1EmZw=; b=mM0iOGf7EAqLT6L2rvdBnDbzDeddR3CJkQhKK5GXWZuZahcsUiKmIAXZdihsAph11yaJsc A3WL32f8sLEuM5yJt0wXhhrGP+lcRFnPxrG/uSeAJ7WyaPLdjkASzCeO+2t+2wBDmPq5mz ZSOx43+DSjDy+/AyMp/WyPgKuaGnFmn3TYVbKCodH4AAwyNGPBEvyOG0hJjb3LHIlzsX8F FnkvWTKi2wl7GNKn3Q7ZLlHl4TT9DdYsrPlqzCddmbpB38o3p5ocso59UHbn1p76Kg5TpN wO5hY1sv4oDUpgd9zxGJ5nWTCwZ+Cn8kjxxCqmc6nuc/HS1e/JAwaTeC3mV5+g== From: Luca Ceresoli Date: Mon, 04 May 2026 12:45:10 +0200 Subject: [PATCH v4 07/11] drm/bridge: lt9611: 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: <20260504-drm-bridge-alloc-getput-panel_or_bridge-v4-7-b578c3daaf10@bootlin.com> References: <20260504-drm-bridge-alloc-getput-panel_or_bridge-v4-0-b578c3daaf10@bootlin.com> In-Reply-To: <20260504-drm-bridge-alloc-getput-panel_or_bridge-v4-0-b578c3daaf10@bootlin.com> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , Sumit Semwal , John Stultz , 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 , Dmitry Baryshkov 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-20260504_034552_781053_1B4676D6 X-CRM114-Status: GOOD ( 12.17 ) 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. Reviewed-by: Dmitry Baryshkov Signed-off-by: Luca Ceresoli --- drivers/gpu/drm/bridge/lontium-lt9611.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c index 4517aee83332..4b4418cc83bf 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c @@ -37,7 +37,6 @@ struct lt9611 { struct device *dev; struct drm_bridge bridge; - struct drm_bridge *next_bridge; struct regmap *regmap; @@ -761,7 +760,7 @@ static int lt9611_bridge_attach(struct drm_bridge *bridge, { struct lt9611 *lt9611 = bridge_to_lt9611(bridge); - return drm_bridge_attach(encoder, lt9611->next_bridge, + return drm_bridge_attach(encoder, lt9611->bridge.next_bridge, bridge, flags); } @@ -1058,7 +1057,11 @@ static int lt9611_parse_dt(struct device *dev, lt9611->ac_mode = of_property_read_bool(dev->of_node, "lt,ac-mode"); - return drm_of_find_panel_or_bridge(dev->of_node, 2, -1, NULL, <9611->next_bridge); + lt9611->bridge.next_bridge = of_drm_get_bridge_by_endpoint(dev->of_node, 2, -1); + if (IS_ERR(lt9611->bridge.next_bridge)) + return PTR_ERR(lt9611->bridge.next_bridge); + + return 0; } static int lt9611_gpio_init(struct lt9611 *lt9611) -- 2.53.0