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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 44DA8C6FA99 for ; Fri, 10 Mar 2023 13:56:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231192AbjCJN4P (ORCPT ); Fri, 10 Mar 2023 08:56:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38428 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231244AbjCJN4N (ORCPT ); Fri, 10 Mar 2023 08:56:13 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 221F3112DCD for ; Fri, 10 Mar 2023 05:55:47 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id CD67FB822B1 for ; Fri, 10 Mar 2023 13:55:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4659DC433D2; Fri, 10 Mar 2023 13:55:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678456544; bh=G5Tt5UtAX9wH11AZdDhFBNI+5/gV5rrhZrVOdn0oV9k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VY3aPBxZSqnxeSAPnem2+ddkjswse5zJIIcyu/GvT0MCKPKJORDPyrDuOM5mcOz1b NSioq7zOkmK1Gsz0TgaPc2VPrWCmzTsp3kKBtseaCZm8WQGaS6oX36UeDCvvAB2TzR s0/Tj4acNim44c80r9ykuc1mrpfmFCl1eYJyt+h0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ricardo Ribalda , Matthias Brugger , Sasha Levin Subject: [PATCH 6.2 012/211] soc: mediatek: mtk-svs: Enable the IRQ later Date: Fri, 10 Mar 2023 14:36:32 +0100 Message-Id: <20230310133719.098447739@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230310133718.689332661@linuxfoundation.org> References: <20230310133718.689332661@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ricardo Ribalda [ Upstream commit b74952aba6c3f47e7f2c5165abaeefa44c377140 ] If the system does not come from reset (like when is booted via kexec()), the peripheral might triger an IRQ before the data structures are initialised. 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 Link: https://lore.kernel.org/r/20221127-mtk-svs-v2-0-145b07663ea8@chromium.org Signed-off-by: Matthias Brugger Signed-off-by: Sasha Levin --- drivers/soc/mediatek/mtk-svs.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c index 0469c9dfeb04e..75b2f534aa9d0 100644 --- a/drivers/soc/mediatek/mtk-svs.c +++ b/drivers/soc/mediatek/mtk-svs.c @@ -2385,14 +2385,6 @@ static int svs_probe(struct platform_device *pdev) 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 +2406,14 @@ static int svs_probe(struct platform_device *pdev) goto svs_probe_clk_disable; } + 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); -- 2.39.2