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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Vasant Hegde <vasant.hegde@amd.com>,
	Matt Fagnani <matt.fagnani@bell.net>,
	Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
	Joerg Roedel <jroedel@suse.de>, Sasha Levin <sashal@kernel.org>,
	joro@8bytes.org, will@kernel.org, iommu@lists.linux.dev
Subject: [PATCH AUTOSEL 5.10 02/30] iommu/amd: Fix error handling for pdev_pri_ats_enable()
Date: Fri,  3 Mar 2023 16:46:47 -0500	[thread overview]
Message-ID: <20230303214715.1452256-2-sashal@kernel.org> (raw)
In-Reply-To: <20230303214715.1452256-1-sashal@kernel.org>

From: Vasant Hegde <vasant.hegde@amd.com>

[ 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 <matt.fagnani@bell.net>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/20230111121503.5931-1-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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 f216a86d9c817..bb0983c9fbdf4 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -2078,17 +2078,17 @@ 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);
@@ -2098,12 +2098,14 @@ 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


  reply	other threads:[~2023-03-03 22:54 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-03 21:46 [PATCH AUTOSEL 5.10 01/30] IB/hfi1: Update RMT size calculation Sasha Levin
2023-03-03 21:46 ` Sasha Levin [this message]
2023-03-03 21:46 ` [PATCH AUTOSEL 5.10 03/30] media: uvcvideo: Handle cameras with invalid descriptors Sasha Levin
2023-03-03 21:46 ` [PATCH AUTOSEL 5.10 04/30] media: uvcvideo: Handle errors from calls to usb_string Sasha Levin
2023-03-03 21:46 ` [PATCH AUTOSEL 5.10 05/30] media: uvcvideo: Quirk for autosuspend in Logitech B910 and C910 Sasha Levin
2023-03-03 21:46 ` [PATCH AUTOSEL 5.10 06/30] media: uvcvideo: Silence memcpy() run-time false positive warnings Sasha Levin
2023-03-03 21:46 ` [PATCH AUTOSEL 5.10 07/30] staging: emxx_udc: Add checks for dma_alloc_coherent() Sasha Levin
2023-03-03 21:46 ` [PATCH AUTOSEL 5.10 08/30] tty: fix out-of-bounds access in tty_driver_lookup_tty() Sasha Levin
2023-03-03 21:46 ` [PATCH AUTOSEL 5.10 09/30] tty: serial: fsl_lpuart: disable the CTS when send break signal Sasha Levin
2023-03-03 21:46 ` [PATCH AUTOSEL 5.10 10/30] serial: sc16is7xx: setup GPIO controller later in probe Sasha Levin
2023-03-03 21:46 ` [PATCH AUTOSEL 5.10 11/30] mei: bus-fixup:upon error print return values of send and receive Sasha Levin
2023-03-03 21:46 ` [PATCH AUTOSEL 5.10 12/30] parport_pc: Set up mode and ECR masks for Oxford Semiconductor devices Sasha Levin
2023-03-03 21:46 ` [PATCH AUTOSEL 5.10 13/30] tools/iio/iio_utils:fix memory leak Sasha Levin
2023-03-03 21:46 ` [PATCH AUTOSEL 5.10 14/30] iio: accel: mma9551_core: Prevent uninitialized variable in mma9551_read_status_word() Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 15/30] iio: accel: mma9551_core: Prevent uninitialized variable in mma9551_read_config_word() Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 16/30] firmware: coreboot: framebuffer: Ignore reserved pixel color bits Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 17/30] PCI: loongson: Prevent LS7A MRRS increases Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 18/30] usb: host: xhci: mvebu: Iterate over array indexes instead of using pointer math Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 19/30] USB: ene_usb6250: Allocate enough memory for full object Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 20/30] usb: uvc: Enumerate valid values for color matching Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 21/30] usb: gadget: uvc: Make bSourceID read/write Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 22/30] PCI: Align extra resources for hotplug bridges properly Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 23/30] PCI: Take other bus devices into account when distributing resources Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 24/30] kernel/power/energy_model.c: fix memory leak with using debugfs_lookup() Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 25/30] kernel/fail_function: " Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 26/30] PCI: loongson: Add more devices that need MRRS quirk Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 27/30] PCI: Add ACS quirk for Wangxun NICs Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 28/30] phy: rockchip-typec: Fix unsigned comparison with less than zero Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 29/30] soundwire: cadence: Remove wasted space in response_buf Sasha Levin
2023-03-03 21:47 ` [PATCH AUTOSEL 5.10 30/30] soundwire: cadence: Drain the RX FIFO after an IO timeout Sasha Levin

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