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iommu: Remove wrong default domain comments 

These comments are wrong. request_default_domain_for_dev doesn't just
handle direct mapped domains.

Signed-off-by: Tom Murphy <murphyt7@tcd.ie>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Tom Murphy 2019-08-26 05:48:21 +01:00 committed by Joerg Roedel
parent 6b0c54e7f2
commit d127bc9be8
1 changed files with 1 additions and 3 deletions
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4
drivers/iommu/iommu.c
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@ -2200,7 +2200,6 @@ request_default_domain_for_dev(struct device *dev, unsigned long type)
mutex_lock(&group->mutex); mutex_lock(&group->mutex);
/* Check if the default domain is already direct mapped */
ret = 0; ret = 0;
if (group->default_domain && group->default_domain->type == type) if (group->default_domain && group->default_domain->type == type)
goto out; goto out;
@ -2210,7 +2209,6 @@ request_default_domain_for_dev(struct device *dev, unsigned long type)
if (iommu_group_device_count(group) != 1) if (iommu_group_device_count(group) != 1)
goto out; goto out;
/* Allocate a direct mapped domain */
ret = -ENOMEM; ret = -ENOMEM;
domain = __iommu_domain_alloc(dev->bus, type); domain = __iommu_domain_alloc(dev->bus, type);
if (!domain) if (!domain)
@ -2225,7 +2223,7 @@ request_default_domain_for_dev(struct device *dev, unsigned long type)
iommu_group_create_direct_mappings(group, dev); iommu_group_create_direct_mappings(group, dev);
/* Make the direct mapped domain the default for this group */ /* Make the domain the default for this group */
if (group->default_domain) if (group->default_domain)
iommu_domain_free(group->default_domain); iommu_domain_free(group->default_domain);
group->default_domain = domain; group->default_domain = domain;