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 <m.szyprowski@samsung.com>
Reported-by: kernelci.org bot <bot@kernelci.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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)