This is a note to let you know that I've just added the patch titled
iommu/amd: Handle error path in amd_iommu_probe_device()
to the 6.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iommu-amd-handle-error-path-in-amd_iommu_probe_devic.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 570eb0642dacd6712d82b39a35ea3ba932f86a3d
Author: Vasant Hegde <vasant.hegde@xxxxxxx>
Date: Wed Aug 28 11:10:25 2024 +0000
iommu/amd: Handle error path in amd_iommu_probe_device()
[ Upstream commit 293aa9ec694e633bff83ab93715a2684e15fe214 ]
Do not try to set max_pasids in error path as dev_data is not allocated.
Fixes: a0c47f233e68 ("iommu/amd: Introduce iommu_dev_data.max_pasids")
Signed-off-by: Vasant Hegde <vasant.hegde@xxxxxxx>
Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
Link: https://lore.kernel.org/r/20240828111029.5429-5-vasant.hegde@xxxxxxx
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index b19e8c0f48fa2..fc660d4b10ac8 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -2185,11 +2185,12 @@ static struct iommu_device *amd_iommu_probe_device(struct device *dev)
dev_err(dev, "Failed to initialize - trying to proceed anyway\n");
iommu_dev = ERR_PTR(ret);
iommu_ignore_device(iommu, dev);
- } else {
- amd_iommu_set_pci_msi_domain(dev, iommu);
- iommu_dev = &iommu->iommu;
+ goto out_err;
}
+ amd_iommu_set_pci_msi_domain(dev, iommu);
+ iommu_dev = &iommu->iommu;
+
/*
* If IOMMU and device supports PASID then it will contain max
* supported PASIDs, else it will be zero.
@@ -2201,6 +2202,7 @@ static struct iommu_device *amd_iommu_probe_device(struct device *dev)
pci_max_pasids(to_pci_dev(dev)));
}
+out_err:
iommu_completion_wait(iommu);
return iommu_dev;
