From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CC8D88F7B for ; Fri, 3 Mar 2023 21:41:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 97813C433A7; Fri, 3 Mar 2023 21:41:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1677879672; bh=9HgW4kMGyjpm66cOcPlhjHAmY9B/AtcFGoQ9yWowF88=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JYsGyoR9ZlPiB2ZdeyGR5Apbw9QY/j7vI5YmVB40Yf8xa/5oYODeRbaZgAEbG57G6 91FNVdYs2cq+BUhPFtIsXAK2FDjXIFn50FQnNoE4Q6biEOMeE+6EKPWmacpQlfUekk 6V/gZS2GSo3xGcgkU2fHyRfXwKztHF5kQU3ywUiJqvRhkbN2VBLAELjk8StBfFBXT1 Gbq35+NUw2T3aM/bLIDuGlIbiEPujQ14ikvWgV/cWImzuQGfKxoddfntDDYMSGVNfc H+cFszMamoMQWVN9qX3EXeAbJoOmXzPkfoaGb6YepbSo0ZXsG0N/0CmyrnijQNDQQF pw8W04AbXnvhw== 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 6.2 03/64] iommu/amd: Fix error handling for pdev_pri_ats_enable() Date: Fri, 3 Mar 2023 16:40:05 -0500 Message-Id: <20230303214106.1446460-3-sashal@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230303214106.1446460-1-sashal@kernel.org> References: <20230303214106.1446460-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit 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 cbeaab55c0dbc..2f8c018e1ffd7 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -1702,27 +1702,29 @@ static int pdev_pri_ats_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 */ /* FIXME: Hardcode number of outstanding requests for now */ ret = pci_enable_pri(pdev, 32); if (ret) - goto out_err; + goto out_err_pasid; 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