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 1557DC433F5 for ; Wed, 4 May 2022 17:18:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350414AbiEDRWC (ORCPT ); Wed, 4 May 2022 13:22:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55646 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357448AbiEDRPC (ORCPT ); Wed, 4 May 2022 13:15:02 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F360E54BF5 for ; Wed, 4 May 2022 09:58:35 -0700 (PDT) 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 11FEAB827A7 for ; Wed, 4 May 2022 16:58:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 88FA9C385B2; Wed, 4 May 2022 16:58:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1651683490; bh=iBj39tYbdziASOdyLrxbmMBOBrUi8sOQP+uAap9USnc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=myfnxJsGdF+BUZFAYaqlELx+djh4esoEpn5+994M8Xz3eF0eLkwicUXeNqdxikkis PxqDI8tBmwm76brn0NGa+9Ln7yA5UutFVxU2NL0s0T8KsJeoRYbBbk6gPbesXKV56f lHdiIiDloOUNBac68BU7rmx7KhtbdLoesbGupecbCRbgxyEv35kSHgxzqtLCk3yOaD CMkwyowBacky7LhsGWNy0dUaZfi+t6wNvMKIzQHuOaXGTQ5IhORmHUHw+TIq1XEaJk jBJYkRYdwZFXEe56Ixvg6iY/X+TgoOqOgO2QcWPTZ3TjCf90AX6WruLtzF8bhfahi0 9vOLq9C1xZnCQ== From: =?UTF-8?q?Marek=20Beh=C3=BAn?= To: Greg Kroah-Hartman , Sasha Levin Cc: stable@vger.kernel.org, pali@kernel.org, =?UTF-8?q?Marek=20Beh=C3=BAn?= Subject: [PATCH 5.15 07/30] PCI: aardvark: Mask all interrupts when unbinding driver Date: Wed, 4 May 2022 18:57:32 +0200 Message-Id: <20220504165755.30002-8-kabel@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220504165755.30002-1-kabel@kernel.org> References: <20220504165755.30002-1-kabel@kernel.org> 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: Pali Rohár commit 13bcdf07cb2ecff5d45d2c141df2539b15211448 upstream. Ensure that no interrupt can be triggered after driver unbind. Link: https://lore.kernel.org/r/20211130172913.9727-8-kabel@kernel.org Signed-off-by: Pali Rohár Signed-off-by: Marek Behún Signed-off-by: Lorenzo Pieralisi Signed-off-by: Marek Behún --- drivers/pci/controller/pci-aardvark.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index ee6ffba2af22..d2c01c6e6815 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -1693,6 +1693,27 @@ static int advk_pcie_remove(struct platform_device *pdev) val &= ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); advk_writel(pcie, val, PCIE_CORE_CMD_STATUS_REG); + /* Disable MSI */ + val = advk_readl(pcie, PCIE_CORE_CTRL2_REG); + val &= ~PCIE_CORE_CTRL2_MSI_ENABLE; + advk_writel(pcie, val, PCIE_CORE_CTRL2_REG); + + /* Clear MSI address */ + advk_writel(pcie, 0, PCIE_MSI_ADDR_LOW_REG); + advk_writel(pcie, 0, PCIE_MSI_ADDR_HIGH_REG); + + /* Mask all interrupts */ + advk_writel(pcie, PCIE_MSI_ALL_MASK, PCIE_MSI_MASK_REG); + advk_writel(pcie, PCIE_ISR0_ALL_MASK, PCIE_ISR0_MASK_REG); + advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_MASK_REG); + advk_writel(pcie, PCIE_IRQ_ALL_MASK, HOST_CTRL_INT_MASK_REG); + + /* Clear all interrupts */ + advk_writel(pcie, PCIE_MSI_ALL_MASK, PCIE_MSI_STATUS_REG); + advk_writel(pcie, PCIE_ISR0_ALL_MASK, PCIE_ISR0_REG); + advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_REG); + advk_writel(pcie, PCIE_IRQ_ALL_MASK, HOST_CTRL_INT_STATUS_REG); + /* Remove IRQ domains */ advk_pcie_remove_msi_irq_domain(pcie); advk_pcie_remove_irq_domain(pcie); -- 2.35.1