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iommu/exynos: Properly release device from the default domain in ->remove
IOMMU core doesn't detach device from the default domain before calling ->iommu_remove_device, so check that and do the proper cleanup or warn if device is still attached to non-default domain. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
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@ -1242,9 +1242,21 @@ static int exynos_iommu_add_device(struct device *dev)
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static void exynos_iommu_remove_device(struct device *dev)
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{
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struct exynos_iommu_owner *owner = dev->archdata.iommu;
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if (!has_sysmmu(dev))
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return;
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if (owner->domain) {
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struct iommu_group *group = iommu_group_get(dev);
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if (group) {
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WARN_ON(owner->domain !=
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iommu_group_default_domain(group));
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exynos_iommu_detach_device(owner->domain, dev);
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iommu_group_put(group);
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}
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}
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iommu_group_remove_device(dev);
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}
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