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 4E46EFF885A for ; Mon, 4 May 2026 10:45:55 +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=p2/Y7roARxFkweio2HkVO8IrTHGmO9nhgwGPDGzMLOQ=; b=f3I4a46GrHaotV/ytZHUy6L8wV Yi7MpyKqHJwDOictmFjDoA+9TCkOgH+0+yJANciIdceMbwZIgsMqpmzfcLQHGCc+SSP5THQJtBSNb /7UpLwFKspz8ElzyBOHNN40J4825f85f5wnEvPQKsq7vx8A7neP9UDpKOSMKxoWspzeGkRSfVesLS RwKc7DGsnN7ulaKLHGnHSZJoDzOdIH5zINN3uyC1Jlhei7TmTKs3gvkgH+jUA33/oW428uUkvzr9D 4D0WiLhwrVoDD7iZurc3szch7BlQJ9+x7A4EKP/xTlegXxGmdtXPx92mvmJiy6IECSgGeyPYSF1dS dR4/scPA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wJqoA-0000000Cxkv-3oYK; Mon, 04 May 2026 10:45:50 +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 1wJqo8-0000000Cxi6-0Mj5 for linux-arm-kernel@lists.infradead.org; Mon, 04 May 2026 10:45:49 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-03.galae.net (Postfix) with ESMTPS id A6DBD4E42BBD; Mon, 4 May 2026 10:45:46 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 7A37C5FD5F; Mon, 4 May 2026 10:45:46 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id DB74111AD2694; Mon, 4 May 2026 12:45:40 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1777891545; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=p2/Y7roARxFkweio2HkVO8IrTHGmO9nhgwGPDGzMLOQ=; b=ic4Gw11tVoBzcev859MKmJFk5XV2yg0UzV+TedTO8QFMN72e3t7NptuwQg+ipx2Xkz2G9H CFphTJUmCUaqx3PVmoiNsU6LrjAl1eGxvJOWJXOt9Gp+6MH5WomSjTjGEExiZFy66gMQlk pf6AhK3JZiosah++zVbwjF1vMuodVnncYDooovbLKUNUmb9yr0OaTWhve17XqSwoL0wc5n hrM/yHWpAhRP1vzRsipUJBtH+mEGqhh1H26BliwBmnILOj/qBwN7QxIf4aTke7dugT1jeN LH7JEE30PEmNFJwfUMJt4p7dlx+SWCVqrPrwyJHZS9WFxwSjC3SkOIW+PO+zVA== From: Luca Ceresoli Date: Mon, 04 May 2026 12:45:09 +0200 Subject: [PATCH v4 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: <20260504-drm-bridge-alloc-getput-panel_or_bridge-v4-6-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_034548_309761_0493D20A X-CRM114-Status: GOOD ( 12.35 ) 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-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