From: Joerg Roedel <[email protected]>
This check needs to be there and got lost at some point
during development. Add it again.
Fixes: 641fb0efbff0 ('iommu/of: Don't call iommu_ops->add_device directly')
Reported-by: Marek Szyprowski <[email protected]>
Reported-by: kernelci.org bot <[email protected]>
Signed-off-by: Joerg Roedel <[email protected]>
---
drivers/iommu/iommu.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index a2131751dcff..3ed4db334341 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -114,10 +114,14 @@ void iommu_device_unregister(struct iommu_device *iommu)
int iommu_probe_device(struct device *dev)
{
const struct iommu_ops *ops = dev->bus->iommu_ops;
+ int ret = -EINVAL;
WARN_ON(dev->iommu_group);
- return ops->add_device(dev);
+ if (ops)
+ ret = ops->add_device(dev);
+
+ return ret;
}
void iommu_release_device(struct device *dev)
--
2.13.7
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