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[23.128.96.18]) by mx.google.com with ESMTP id y196si14331816iof.35.2021.06.28.07.20.28; Mon, 28 Jun 2021 07:20:42 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=ouTlP1Kc; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233265AbhF1OVt (ORCPT + 99 others); Mon, 28 Jun 2021 10:21:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:54378 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232601AbhF1OVJ (ORCPT ); Mon, 28 Jun 2021 10:21:09 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2408561C7D; Mon, 28 Jun 2021 14:18:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1624889920; bh=zGkdKxRdBQp1OrncasTOEjRRrb+RuldE4DcSQnlrAQQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ouTlP1KcLmsTNiltgfDoRT8PbUd6cxLoYP8StCluLkNPlel6a+D7Mudi19a7vPDxA 0BBZFr2lRXPUA7h2socpo1wRP6d1MLZIzxxF+qJSX56ZpZD7f0SQUv82SUJHdhCmd/ gSZnE9faiCEkxdJkYwZB1x8lunGx0UTBXJzqM3NaB5slEfROePmOkhTBca4dnN4cU+ yUgHQwbehk4W+X5poo4+Gi53ucTJJDa7rKcybEKev76gmN+YSWgQ6JMheLPd2/IqzG kcHn2tanG70wLvDldDJ7c3CWYol6JalwUnrhaEEsVcMdBTj9fIlAyoLWVeL4ECT0oF st7HdiCa9Yz4w== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Haibo Chen , Mark Brown , Sasha Levin Subject: [PATCH 5.12 011/110] spi: spi-nxp-fspi: move the register operation after the clock enable Date: Mon, 28 Jun 2021 10:16:49 -0400 Message-Id: <20210628141828.31757-12-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210628141828.31757-1-sashal@kernel.org> References: <20210628141828.31757-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.12.14-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-5.12.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 5.12.14-rc1 X-KernelTest-Deadline: 2021-06-30T14:18+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