From patchwork Wed Jan 11 07:45:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roger Lu X-Patchwork-Id: 13096174 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 039BCC5479D for ; Wed, 11 Jan 2023 07:49:38 +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: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ojtPP2sUe5MCGx6lnO4f/fGVeUPLopgo+J9PjWa6QQc=; b=ToDNaZgr5Q6Kw8 YfvxgRejpnn1d7CZMFPoh6DP3e0d5lXWy6ujZ3AYAtTpq3DuTlhMO/Lmuj7ra6o9uSoOoXR436cDM gTO8P5w6C1ql4tzm+M1VjAZkXjr2LUvPZxAjHDuyqzayEFscJ2sgf4AKDtl+eXgNSsf7YkXYWt33Q zTMBe2c8UfXD75pXMmy21EXKbBg5o0KyOyhYAwazgfSR638HIMRW++gWHvFOdrWr4xAixyLeX3dIY iC8hVxiL/49PTUeljCKh2GVw5x2UO+E5oOLA0U1+94T4xaQ/xmNU35R+J89YB1Uybi6IBgDxQ4uLS a3iX6yxM8iUZHSPUW98Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pFVqa-00A88i-Bb; Wed, 11 Jan 2023 07:48:32 +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 1pFVoI-00A6dT-4M; Wed, 11 Jan 2023 07:46:14 +0000 X-UUID: ffd313c4918311edbbe3f76fe852e059-20230111 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=3Hk6/LOaCSVWYRTs09f5CDgwCj2clql0+dtr3RCnhuo=; b=DrJBxKk2yrQ15UTJZAyWdHYXD/HYJDpTATD8vKlytkRX7YcoyaXzEqAFvf5xi5KTwGJcDhrEXxo+Ui5eBxB5vKfDJgOtY/Vw+CLkh+6mpNvLuF0MOMkFULFUKIBIDyw8NCqeAQtMYiwTb+/pIayvjC2M1kduYO7XHGhcFeEZkOs=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.17,REQID:461da1df-5af3-487e-930a-7a6337fe0da5,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:90 X-CID-INFO: VERSION:1.1.17,REQID:461da1df-5af3-487e-930a-7a6337fe0da5,IP:0,URL :0,TC:0,Content:-5,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS981B3D,ACTIO N:quarantine,TS:90 X-CID-META: VersionHash:543e81c,CLOUDID:869eee8b-8530-4eff-9f77-222cf6e2895b,B ulkID:230111154534QHX5H8P7,BulkQuantity:4,Recheck:0,SF:38|28|17|19|48,TC:n il,Content:0,EDM:-3,IP:nil,URL:11|1,File:nil,Bulk:40,QS:nil,BEC:nil,COL:0, OSI:0,OSA:0 X-CID-APTURL: Status:success,Category:nil,Trust:0,Unknown:0,Malicious:0 X-CID-BVR: 0,NGT X-UUID: ffd313c4918311edbbe3f76fe852e059-20230111 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 2032518223; Wed, 11 Jan 2023 00:46:03 -0700 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) 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; Wed, 11 Jan 2023 15:45:30 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Wed, 11 Jan 2023 15:45:30 +0800 From: Roger Lu To: Matthias Brugger , Enric Balletbo Serra , Kevin Hilman , Nicolas Boichat CC: Fan Chen , Roger Lu , Jia-wei Chang , , , , , , , Ricardo Ribalda Subject: [PATCH v4 03/14] soc: mediatek: mtk-svs: enable the IRQ later Date: Wed, 11 Jan 2023 15:45:17 +0800 Message-ID: <20230111074528.29354-4-roger.lu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230111074528.29354-1-roger.lu@mediatek.com> References: <20230111074528.29354-1-roger.lu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230110_234610_217553_6D684BA1 X-CRM114-Status: GOOD ( 14.14 ) 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 From: Ricardo Ribalda If the system does not come from reset (like when is booted via kexec(), the peripheral might trigger an IRQ before the data structures are initialized. Fixes: [ 0.227710] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000f08 [ 0.227913] Call trace: [ 0.227918] svs_isr+0x8c/0x538 Fixes: 681a02e95000 ("soc: mediatek: SVS: introduce MTK SVS engine") Signed-off-by: Ricardo Ribalda Signed-off-by: Roger Lu --- drivers/soc/mediatek/mtk-svs.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c index a803b92afc3d..64d4d03ab71c 100644 --- a/drivers/soc/mediatek/mtk-svs.c +++ b/drivers/soc/mediatek/mtk-svs.c @@ -2403,20 +2403,6 @@ static int svs_probe(struct platform_device *pdev) goto svs_probe_free_resource; } - svsp_irq = platform_get_irq(pdev, 0); - if (svsp_irq < 0) { - ret = svsp_irq; - goto svs_probe_free_resource; - } - - ret = devm_request_threaded_irq(svsp->dev, svsp_irq, NULL, svs_isr, - IRQF_ONESHOT, svsp->name, svsp); - if (ret) { - dev_err(svsp->dev, "register irq(%d) failed: %d\n", - svsp_irq, ret); - goto svs_probe_free_resource; - } - svsp->main_clk = devm_clk_get(svsp->dev, "main"); if (IS_ERR(svsp->main_clk)) { dev_err(svsp->dev, "failed to get clock: %ld\n", @@ -2438,6 +2424,20 @@ static int svs_probe(struct platform_device *pdev) goto svs_probe_clk_disable; } + svsp_irq = platform_get_irq(pdev, 0); + if (svsp_irq < 0) { + ret = svsp_irq; + goto svs_probe_iounmap; + } + + ret = devm_request_threaded_irq(svsp->dev, svsp_irq, NULL, svs_isr, + IRQF_ONESHOT, svsp->name, svsp); + if (ret) { + dev_err(svsp->dev, "register irq(%d) failed: %d\n", + svsp_irq, ret); + goto svs_probe_iounmap; + } + ret = svs_start(svsp); if (ret) { dev_err(svsp->dev, "svs start fail: %d\n", ret);