From patchwork Thu Sep 1 04:41:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?UmV4LUJDIENoZW4gKOmZs+afj+i+sCk=?= X-Patchwork-Id: 601995 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DB39FECAAD8 for ; Thu, 1 Sep 2022 04:42:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231398AbiIAEmB (ORCPT ); Thu, 1 Sep 2022 00:42:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58382 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231429AbiIAEl7 (ORCPT ); Thu, 1 Sep 2022 00:41:59 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DD45DE3407; Wed, 31 Aug 2022 21:41:56 -0700 (PDT) X-UUID: d912a75ad06d4fbf87d2a5a72735b778-20220901 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=BZGrMSHNWlybpzH/lRqiPGtFt4PDIEbLYBxqAsW/Mio=; b=F8Mihcd+r0IdWLBJwEYMcEmE/HLI8KmhGpS13v6GOYqxpqUXFAjVB1R1+SnQS6gyR2By4/Ioz7mgcXqERfkfW82RY4sCdwsKjnbrGGHgC35PMjvpEdQDQGljt17tAI8k0UyNmOkFQg2nFM7dzL65BnZ35DYLEz5JX8rRpqS5Kk0=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.10, REQID:21efe063-8588-4a8a-acad-3ee35abb946e, OB:0, L OB:0,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release _Ham,ACTION:release,TS:-5 X-CID-META: VersionHash:84eae18, CLOUDID:65f545d0-20bd-4e5e-ace8-00692b7ab380, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: d912a75ad06d4fbf87d2a5a72735b778-20220901 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 752204933; Thu, 01 Sep 2022 12:41:53 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Thu, 1 Sep 2022 12:41:52 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Thu, 1 Sep 2022 12:41:52 +0800 From: Bo-Chen Chen To: , , , , , , , , , CC: , , , , , , , , , , , , , , Bo-Chen Chen Subject: [PATCH v17 07/10] drm/mediatek: dp: Determine device of next_bridge Date: Thu, 1 Sep 2022 12:41:46 +0800 Message-ID: <20220901044149.16782-8-rex-bc.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220901044149.16782-1-rex-bc.chen@mediatek.com> References: <20220901044149.16782-1-rex-bc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org It's not necessary to have a next_bridge for DP device, so we add this patch to judge this. Signed-off-by: Bo-Chen Chen --- drivers/gpu/drm/mediatek/mtk_dp.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c index 136e13150281..e37c9185e4ec 100644 --- a/drivers/gpu/drm/mediatek/mtk_dp.c +++ b/drivers/gpu/drm/mediatek/mtk_dp.c @@ -1886,7 +1886,10 @@ static int mtk_dp_probe(struct platform_device *pdev) "failed to request dp irq resource\n"); mtk_dp->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0); - if (IS_ERR(mtk_dp->next_bridge)) + if (IS_ERR(mtk_dp->next_bridge) && + PTR_ERR(mtk_dp->next_bridge) == -ENODEV) + mtk_dp->next_bridge = NULL; + else if (IS_ERR(mtk_dp->next_bridge)) return dev_err_probe(dev, PTR_ERR(mtk_dp->next_bridge), "Failed to get bridge\n");