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 28EC1FF8868 for ; Tue, 28 Apr 2026 16:53:30 +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:In-Reply-To:References: Subject:From:To:Cc:Message-Id:Date:Content-Type:Content-Transfer-Encoding: Mime-Version:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=j17uIs2uSTZoslQO8sNkyZKLiUN4S6LiyldQE9M8uqs=; b=1MsxH78C5+VzxTtsVa8WAmgLCg TBNthmGqZXLN1S1tikSDMDd+5jWBHeeItmgJUXG72ixtG3mw5eq6DIJtf5XvUyDWAc+uMUf68KFgI ZRuCrX7mXo/VUWa+7hiHtv770eR8Z8QC7osjqUAiWUXo1JwlaUUFqh+MK7WArc5uSajrOoiXM23iY PekIKaZ2jdZkCF4btf00oE1by7ZrefvHO1pcG9lmLiSh2la36S9uIuZod1pTqY8Nspb8NtWR7oFJc ruvEmApTz+gk9ns90ZMb6Jp2c84192oJDjo1Rd/9I52QccstEtWKWUD15NzaAPlqzi2MOxo83hZ+Y Rkruz7fA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wHlgZ-00000001yz3-2yQ8; Tue, 28 Apr 2026 16:53:23 +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 1wHlgW-00000001yyf-1nEV for linux-arm-kernel@lists.infradead.org; Tue, 28 Apr 2026 16:53:22 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id 7223B1A3470; Tue, 28 Apr 2026 16:53:17 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 42E2E601D0; Tue, 28 Apr 2026 16:53:17 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 52D6E10728FB4; Tue, 28 Apr 2026 18:53:06 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1777395195; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=j17uIs2uSTZoslQO8sNkyZKLiUN4S6LiyldQE9M8uqs=; b=jn0ofNKcSjS7aBuwPqSIA3GjilSnM1Fi4lLPm8K+6s/MikfEa64Epqh/fLM3NM/EGa+YzE uUQyJ44k/mSph8gkWDq4lO+dxb5/SSMuygUIm/v3n6KasZIdEDf1Q7sKge4xjpVS3M2Qn1 UjWkDO9jPkiDz1eWlFfahzgbTmjV81PtWp7XCBCzoqxjCDAxADj+YIJzq3P3F31VCwmIVY kg3b6/esSGyuwalMf5VoXc3w9CTLN+lzxEtByTbiyRGUco52qvTeS06DSCTdtAEB+mrTzj /ZuZ8ub1uiGmMMeQ/XfKamK2BByabe5ndrQs6qWN4Di4EFWIwTNGjB9YhYYP6A== Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 28 Apr 2026 18:53:05 +0200 Message-Id: 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" To: "Biju Das" , "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" , "Xinliang Liu" , "Sumit Semwal" , "Yongqin Liu" , "John Stultz" , "tomi.valkeinen" , "Michal Simek" From: "Luca Ceresoli" Subject: Re: [PATCH v3 10/11] drm: zynqmp_dp: switch to of_drm_get_bridge_by_endpoint() X-Mailer: aerc 0.20.1 References: <20260428-drm-bridge-alloc-getput-panel_or_bridge-v3-0-a537b5567add@bootlin.com> <20260428-drm-bridge-alloc-getput-panel_or_bridge-v3-10-a537b5567add@bootlin.com> In-Reply-To: X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260428_095320_601668_9F6CD7E6 X-CRM114-Status: UNSURE ( 8.81 ) X-CRM114-Notice: Please train this message. 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 On Tue Apr 28, 2026 at 5:37 PM CEST, Biju Das wrote: >> @@ -2461,10 +2459,15 @@ int zynqmp_dp_probe(struct zynqmp_dpsub *dpsub) >> * Acquire the next bridge in the chain. Ignore errors caused by port@= 5 >> * not being connected for backward-compatibility with older DTs. >> */ >> - ret =3D drm_of_find_panel_or_bridge(dp->dev->of_node, 5, 0, NULL, >> - &dp->next_bridge); >> - if (ret < 0 && ret !=3D -ENODEV) >> - goto err_reset; >> + dp->bridge.next_bridge =3D of_drm_get_bridge_by_endpoint(dp->dev->of_n= ode, 5, 0); >> + if (IS_ERR(dp->bridge.next_bridge)) { >> + if (PTR_ERR(dp->bridge.next_bridge) =3D=3D -ENODEV) { >> + dp->bridge.next_bridge; > > > A warning on this patch > > drivers/gpu/drm/xlnx/zynqmp_dp.c: In function =E2=80=98zynqmp_dp_probe=E2= =80=99: > drivers/gpu/drm/xlnx/zynqmp_dp.c:2465:35: warning: statement with no effe= ct [-Wunused-value] > 2465 | dp->bridge.next_bridge; > | ~~~~~~~~~~^~~~~~~~~~~~ Ouch. Guess I should have pondered a bit longer before sending, will do before v4... Luca -- Luca Ceresoli, Bootlin Embedded Linux and Kernel engineering https://bootlin.com