From patchwork Tue Jan 3 11:29:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roger Lu X-Patchwork-Id: 13087387 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 6D4FDC46467 for ; Tue, 3 Jan 2023 11:29:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230006AbjACL3s (ORCPT ); Tue, 3 Jan 2023 06:29:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57504 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237429AbjACL3m (ORCPT ); Tue, 3 Jan 2023 06:29:42 -0500 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3248AFAEE; Tue, 3 Jan 2023 03:29:33 -0800 (PST) X-UUID: 0344f89caad3474597815f639370c3b6-20230103 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=ehDXbWE7c2/1x4Hvq0je5a3soIAyc70ylWW5qGoa4JM=; b=itXlxSQHD9TRXBvnP3BatwO8XbJ0f3UwqIKF4MDwpNDe0F2ekd9UqoKUSo/oQG1EvHPVMkqLRmKKEBFne2BQea+vptmwWJYUqRaFNdZqHM3sJNRodibA13R//DvjS4W9bH6/ABgPM0RGBHm1XHRp5soJblUg/z8KeQ/l1AwDElI=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.16,REQID:d5c0b618-d91a-46ba-8d27-1389320e442b,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:1.1.16,REQID:d5c0b618-d91a-46ba-8d27-1389320e442b,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:09771b1,CLOUDID:7d64aaf4-ff42-4fb0-b929-626456a83c14,B ulkID:230103192928VSUAJLLU,BulkQuantity:0,Recheck:0,SF:38|28|17|19|48,TC:n il,Content:0,EDM:-3,IP:nil,URL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 ,OSI:0,OSA:0 X-CID-BVR: 0,NGT X-UUID: 0344f89caad3474597815f639370c3b6-20230103 Received: from mtkcas11.mediatek.inc [(172.21.101.40)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 769229823; Tue, 03 Jan 2023 19:29:27 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.186) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Tue, 3 Jan 2023 19:29:26 +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; Tue, 3 Jan 2023 19:29:26 +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 v3 01/14] soc: mediatek: mtk-svs: enable the IRQ later Date: Tue, 3 Jan 2023 19:29:12 +0800 Message-ID: <20230103112925.16554-2-roger.lu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230103112925.16554-1-roger.lu@mediatek.com> References: <20230103112925.16554-1-roger.lu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.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 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 0469c9dfeb04..91e06f43969d 100644 --- a/drivers/soc/mediatek/mtk-svs.c +++ b/drivers/soc/mediatek/mtk-svs.c @@ -2379,20 +2379,6 @@ 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", @@ -2414,6 +2400,20 @@ 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);