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| author |  Vasant Hegde <vasant.hegde@amd.com>
| 2023-01-11 12:15:03 +0000 |
|---|---|---|
| committer |  Joerg Roedel <jroedel@suse.de>
| 2023-01-13 17:04:02 +0100 |
| commit | 080920e52148b4fbbf9360d5345fdcd7846e4841 (patch) | |
| tree | 8c913bcfd574dbe8a9706bd28e68acb0cda212d5 /drivers/iommu/amd | |
| parent | iommu/amd: Do not allocate io_pgtable_ops for passthrough domain (diff) | |
| download | linux-080920e52148b4fbbf9360d5345fdcd7846e4841.tar.gz linux-080920e52148b4fbbf9360d5345fdcd7846e4841.tar.bz2 linux-080920e52148b4fbbf9360d5345fdcd7846e4841.zip | |
iommu/amd: Fix error handling for pdev_pri_ats_enable()
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>
Diffstat (limited to 'drivers/iommu/amd')
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index b7c1eac1dfa5..7b4390a2f726 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; |