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 B2681C64EC4 for ; Fri, 3 Mar 2023 21:56:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233233AbjCCV4O (ORCPT ); Fri, 3 Mar 2023 16:56:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47006 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233302AbjCCVzT (ORCPT ); Fri, 3 Mar 2023 16:55:19 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A87266B335; Fri, 3 Mar 2023 13:48:54 -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 dfw.source.kernel.org (Postfix) with ESMTPS id A5248618F8; Fri, 3 Mar 2023 21:48:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9421C433D2; Fri, 3 Mar 2023 21:48:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1677880133; bh=Y+8kg1gWeVirmj5afG56+SuBaNBHH+lDOxMZMdgZtgE=; h=From:To:Cc:Subject:Date:From; b=eMaR+C5GVMK4M8NVBrLR54CIsbxUYO2H7iLa9jzFl2woYeybbIlwPpau6i9PxUvHT 4rfQZ1c0QQP9tqSnBdZrsJKJ0id8mEbD1IW129JJlEIy/fLdMoyxHEAY9PEulJjwVx Q1+XBexUtH6iKSmQEObVtOfD2y03Mkt0VFRnLfr9zvIS27HYNaWYsFuropeGtHkhv/ Mdb9ktPhlSqIhL8WSYh6WX2nlXUusC3oS4kgKeSaHz9kUY4eeOL3ZgVc2tNVEHZqOq Kf3IrtaUQjOaOhs7uREWmsq67ySpUgaKedBhzvbcX6uw9/bKM0f5lUJBxqgCmHEVHW 4jQQNsKDmgS+g== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Vasant Hegde , Matt Fagnani , Suravee Suthikulpanit , Joerg Roedel , Sasha Levin , joro@8bytes.org, will@kernel.org, iommu@lists.linux.dev Subject: [PATCH AUTOSEL 4.19 01/16] iommu/amd: Fix error handling for pdev_pri_ats_enable() Date: Fri, 3 Mar 2023 16:48:34 -0500 Message-Id: <20230303214849.1454002-1-sashal@kernel.org> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Vasant Hegde [ Upstream commit 080920e52148b4fbbf9360d5345fdcd7846e4841 ] Current code throws kernel warning if it fails to enable pasid/pri [1]. Do not call pci_disable_[pasid/pri] if pci_enable_[pasid/pri] failed. [1] https://lore.kernel.org/linux-iommu/15d0f9ff-2a56-b3e9-5b45-e6b23300ae3b@leemhuis.info/ Reported-by: Matt Fagnani Signed-off-by: Vasant Hegde Reviewed-by: Suravee Suthikulpanit Link: https://lore.kernel.org/r/20230111121503.5931-1-vasant.hegde@amd.com Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/amd_iommu.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 5d5941aca16ad..75c5932d0133a 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2059,17 +2059,17 @@ static int pdev_iommuv2_enable(struct pci_dev *pdev) /* Only allow access to user-accessible pages */ ret = pci_enable_pasid(pdev, 0); if (ret) - goto out_err; + return ret; /* First reset the PRI state of the device */ ret = pci_reset_pri(pdev); if (ret) - goto out_err; + goto out_err_pasid; /* Enable PRI */ ret = pci_enable_pri(pdev, reqs); if (ret) - goto out_err; + goto out_err_pasid; if (reset_enable) { ret = pri_reset_while_enabled(pdev); @@ -2079,12 +2079,14 @@ static int pdev_iommuv2_enable(struct pci_dev *pdev) ret = pci_enable_ats(pdev, PAGE_SHIFT); if (ret) - goto out_err; + goto out_err_pri; return 0; -out_err: +out_err_pri: pci_disable_pri(pdev); + +out_err_pasid: pci_disable_pasid(pdev); return ret; -- 2.39.2