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 EF34EECAAA1 for ; Fri, 2 Sep 2022 08:06:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Date:CC:To:From:Subject:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=UqGtFPrpPEaK2F3RC6v8VfI235I+Ug0fxa8T/mGzgyU=; b=Zp2md0BKlrndcG g9gEHym3T850AHX9b+ROZlqJjeV1UjlfxDnlvxyS3yDV3+Gkej/7z4pKhvUMv+qUjV4CU3CUJDwGn 16qQtpL6hUJLaPNEu4pWGRktI4Uo6G4iOW+4uhalQV7lWAthYZWjrqcFHbKrdlBddGqqSMoVfhgxN OR6uDnSdMVgZ1PPe+66rlfaJcoyZDCS8cXi9gvUO/Im4UhSYG8BbTGdJqqf1lGV+z5YNtdnLNP8TT 8IqsQxGWmfP6glZ2XRcn1agTRnkUTqQfT6KMzdgvRVIFXxnz4a12jfT1L1wYYUnp4BXB2mSxDqgqO q5rDJvmoBMFMFKmDsfxw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oU1gM-001cW4-S2; Fri, 02 Sep 2022 08:05:42 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oU1gJ-001cQk-IH; Fri, 02 Sep 2022 08:05:40 +0000 X-UUID: ef8d553764474985a9856b02209d3e5c-20220902 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:MIME-Version:Content-Type:References:In-Reply-To:Date:CC:To:From:Subject:Message-ID; bh=NyJm/OfsyIJ5uXNbYeIMyaLdtHaPXQQYpfcJJr8LKks=; b=CqVqtw5g0paicSvSV4ijFkk4fI5/4lIsCvwagB4D5EwxaWCjLGnnL0g0Nlqz5SDNd3QJETfy1XOcGkD3EVUSHbeH6uq4wEfcvOd0oWDNyPjSrEpGDB8ItIcHk0cko4QbXIhm2zkmz7yiCmFN+r9ojRmnfcE4rNxDDRcsCkSI/DU=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.10,REQID:778722eb-2536-42b7-80ac-c5f12f94a019,OB:0,L OB:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_ Ham,ACTION:release,TS:0 X-CID-META: VersionHash:84eae18,CLOUDID:ee086fd0-20bd-4e5e-ace8-00692b7ab380,C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:11|1,File: nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: ef8d553764474985a9856b02209d3e5c-20220902 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1173429194; Fri, 02 Sep 2022 01:05:32 -0700 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Fri, 2 Sep 2022 15:44:57 +0800 Received: from mtksdccf07 (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 2 Sep 2022 15:44:57 +0800 Message-ID: <55eec0effd6cd08edbb130ec7f74ad993a75907d.camel@mediatek.com> Subject: Re: [PATCH v17 07/10] drm/mediatek: dp: Determine device of next_bridge From: CK Hu To: Bo-Chen Chen , , , , , , , , , , CC: , , , , , , , , , , , , Date: Fri, 2 Sep 2022 15:44:57 +0800 In-Reply-To: <20220901044149.16782-8-rex-bc.chen@mediatek.com> References: <20220901044149.16782-1-rex-bc.chen@mediatek.com> <20220901044149.16782-8-rex-bc.chen@mediatek.com> X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220902_010539_626330_CEBE7ED2 X-CRM114-Status: GOOD ( 17.30 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Bo-Chen: On Thu, 2022-09-01 at 12:41 +0800, Bo-Chen Chen wrote: > It's not necessary to have a next_bridge for DP device, so we add > this > patch to judge this. Reviewed-by: CK Hu > > 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"); > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel