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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 7992EC2B9F4 for ; Mon, 28 Jun 2021 14:29:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 612D061984 for ; Mon, 28 Jun 2021 14:29:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234279AbhF1OcR (ORCPT ); Mon, 28 Jun 2021 10:32:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:35966 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234449AbhF1O3u (ORCPT ); Mon, 28 Jun 2021 10:29:50 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4B34261C92; Mon, 28 Jun 2021 14:26:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1624890381; bh=zGkdKxRdBQp1OrncasTOEjRRrb+RuldE4DcSQnlrAQQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DvElLrG4vG7D682BFlCfZYmRoI0TWuxUB9fuIk+rQHrG5Jfq16xS9bVe742sz+V2e 7zt4ptUWgasNVxwXyY/YReRM+D74O+oNVfpLEJ3pBOjDix3BsgmiayIrebI+hbnnfS RKKC3JjF1nQU6Plv1hsPQCxhmSRXKC35kpV4CEV6cwj4p/Lce1rgRAD3lEW9Lm/483 IBwOOMBbuIfESXqsHjwT8umsSzsYrzximFnNgSP/4SKw5cC1iUi/DrBf6Yrsta+4Hp 7Am9BBgSm+PnR4U7ikjUIkkszr/65X1EvyXAaG720URRD3WSfTvjpM5NVAi5tw82A4 aM7A4q442vNyg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Haibo Chen , Mark Brown , Sasha Levin Subject: [PATCH 5.10 013/101] spi: spi-nxp-fspi: move the register operation after the clock enable Date: Mon, 28 Jun 2021 10:24:39 -0400 Message-Id: <20210628142607.32218-14-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210628142607.32218-1-sashal@kernel.org> References: <20210628142607.32218-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.10.47-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-5.10.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 5.10.47-rc1 X-KernelTest-Deadline: 2021-06-30T14:25+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Haibo Chen [ Upstream commit f422316c8e9d3c4aff3c56549dfb44a677d02f14 ] Move the register operation after the clock enable, otherwise system will stuck when this driver probe. Fixes: 71d80563b076 ("spi: spi-nxp-fspi: fix fspi panic by unexpected interrupts") Signed-off-by: Haibo Chen Link: https://lore.kernel.org/r/1623317073-25158-1-git-send-email-haibo.chen@nxp.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/spi/spi-nxp-fspi.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-nxp-fspi.c b/drivers/spi/spi-nxp-fspi.c index ab9035662717..bcc0b5a3a459 100644 --- a/drivers/spi/spi-nxp-fspi.c +++ b/drivers/spi/spi-nxp-fspi.c @@ -1033,12 +1033,6 @@ static int nxp_fspi_probe(struct platform_device *pdev) goto err_put_ctrl; } - /* Clear potential interrupts */ - reg = fspi_readl(f, f->iobase + FSPI_INTR); - if (reg) - fspi_writel(f, reg, f->iobase + FSPI_INTR); - - /* find the resources - controller memory mapped space */ if (is_acpi_node(f->dev->fwnode)) res = platform_get_resource(pdev, IORESOURCE_MEM, 1); @@ -1076,6 +1070,11 @@ static int nxp_fspi_probe(struct platform_device *pdev) } } + /* Clear potential interrupts */ + reg = fspi_readl(f, f->iobase + FSPI_INTR); + if (reg) + fspi_writel(f, reg, f->iobase + FSPI_INTR); + /* find the irq */ ret = platform_get_irq(pdev, 0); if (ret < 0) -- 2.30.2