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iommu/amd: Return -ENODEV in add_device when device is not handled by IOMMU

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When check_device() fails on the device, it is not handled by the
IOMMU and amd_iommu_add_device() needs to return -ENODEV.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20200429133712.31431-7-joro@8bytes.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel
2020-04-29 15:36:44 +02:00
parent c0da9b9f5a
commit 57bd2c24ba
1 changed files with 4 additions and 1 deletions
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5
drivers/iommu/amd_iommu.c
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@@ -2157,9 +2157,12 @@ static int amd_iommu_add_device(struct device *dev)
struct amd_iommu *iommu;
int ret, devid;
if (!check_device(dev) || get_dev_data(dev))
if (get_dev_data(dev))
return 0;
if (!check_device(dev))
return -ENODEV;
devid = get_device_id(dev);
if (devid < 0)
return devid;