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iommu/amd: Detach device from domain before removal

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Detach the device that is about to be removed from its
domain (if it has one) to clear any related state like DTE
entry and device's ATS state.

Reported-by: Kelly Zytaruk <Kelly.Zytaruk@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2016-02-26 16:48:59 +01:00
parent 358875fd52
commit b6809ee573
1 changed files with 4 additions and 0 deletions
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4
drivers/iommu/amd_iommu.c
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@ -114,6 +114,7 @@ struct kmem_cache *amd_iommu_irq_cache;
static void update_domain(struct protection_domain *domain);
static int protection_domain_init(struct protection_domain *domain);
static void detach_device(struct device *dev);
/*
* For dynamic growth the aperture size is split into ranges of 128MB of
@ -384,6 +385,9 @@ static void iommu_uninit_device(struct device *dev)
if (!dev_data)
return;
if (dev_data->domain)
detach_device(dev);
iommu_device_unlink(amd_iommu_rlookup_table[dev_data->devid]->iommu_dev,
dev);