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 X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16487C433E0 for ; Mon, 1 Mar 2021 18:40:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DB05A601FC for ; Mon, 1 Mar 2021 18:40:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234829AbhCASjg (ORCPT ); Mon, 1 Mar 2021 13:39:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:44684 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239914AbhCASbj (ORCPT ); Mon, 1 Mar 2021 13:31:39 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 09A10651D6; Mon, 1 Mar 2021 17:17:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614619057; bh=KsBIlFCuWO/SvTLiZ3DNi4EKh+Q09SGZIg/htGUJeco=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IuM0KGzi8Xj/0+SpnQmUUfn3MTk3gV0TXJRRdGzJN2QmenmT9gjeiv+SdgX2IIhdc GtBMjC2bhC+6ae+zBu2ECXgDqnQsqLaZ461Hrfsrr8DnyQAZmacOCSGo019gQh4C46 2zVc7PAbSYhqS4VOHeNXm03MYEzYv1bhwyCT5SBQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andy Shevchenko , Guenter Roeck , Linus Walleij , Mika Westerberg , Sasha Levin Subject: [PATCH 5.10 316/663] watchdog: intel-mid_wdt: Postpone IRQ handler registration till SCU is ready Date: Mon, 1 Mar 2021 17:09:24 +0100 Message-Id: <20210301161157.482910335@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161141.760350206@linuxfoundation.org> References: <20210301161141.760350206@linuxfoundation.org> User-Agent: quilt/0.66 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: Andy Shevchenko [ Upstream commit f285c9532b5bd3de7e37a6203318437cab79bd9a ] When SCU is not ready and CONFIG_DEBUG_SHIRQ=y we got deferred probe followed by fired test IRQ which immediately makes kernel panic. Fix this by delaying IRQ handler registration till SCU is ready. Fixes: 80ae679b8f86 ("watchdog: intel-mid_wdt: Convert to use new SCU IPC API") Signed-off-by: Andy Shevchenko Reviewed-by: Guenter Roeck Acked-by: Linus Walleij Reviewed-by: Mika Westerberg Signed-off-by: Sasha Levin --- drivers/watchdog/intel-mid_wdt.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/watchdog/intel-mid_wdt.c b/drivers/watchdog/intel-mid_wdt.c index 1ae03b64ef8bf..9b2173f765c8c 100644 --- a/drivers/watchdog/intel-mid_wdt.c +++ b/drivers/watchdog/intel-mid_wdt.c @@ -154,6 +154,10 @@ static int mid_wdt_probe(struct platform_device *pdev) watchdog_set_nowayout(wdt_dev, WATCHDOG_NOWAYOUT); watchdog_set_drvdata(wdt_dev, mid); + mid->scu = devm_intel_scu_ipc_dev_get(dev); + if (!mid->scu) + return -EPROBE_DEFER; + ret = devm_request_irq(dev, pdata->irq, mid_wdt_irq, IRQF_SHARED | IRQF_NO_SUSPEND, "watchdog", wdt_dev); @@ -162,10 +166,6 @@ static int mid_wdt_probe(struct platform_device *pdev) return ret; } - mid->scu = devm_intel_scu_ipc_dev_get(dev); - if (!mid->scu) - return -EPROBE_DEFER; - /* * The firmware followed by U-Boot leaves the watchdog running * with the default threshold which may vary. When we get here -- 2.27.0