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iommu/exynos: Use generic group callback 

Since iommu_group_get_for_dev() already tries iommu_group_get() and will
not call ops->device_group if the group is already non-NULL, the check
in get_device_iommu_group() is always redundant and it reduces to a
duplicate of the generic version; let's just use that one instead.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Robin Murphy 2018-01-24 14:22:09 +00:00 committed by Joerg Roedel
parent 7928b2cbe5
commit 6d7cf02a86
1 changed files with 1 additions and 12 deletions
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13
drivers/iommu/exynos-iommu.c
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@ -1238,17 +1238,6 @@ static phys_addr_t exynos_iommu_iova_to_phys(struct iommu_domain *iommu_domain,
return phys;
}
static struct iommu_group *get_device_iommu_group(struct device *dev)
{
struct iommu_group *group;
group = iommu_group_get(dev);
if (!group)
group = iommu_group_alloc();
return group;
}
static int exynos_iommu_add_device(struct device *dev)
{
struct exynos_iommu_owner *owner = dev->archdata.iommu;
@ -1344,7 +1333,7 @@ static const struct iommu_ops exynos_iommu_ops = {
.unmap = exynos_iommu_unmap,
.map_sg = default_iommu_map_sg,
.iova_to_phys = exynos_iommu_iova_to_phys,
.device_group = get_device_iommu_group,
.device_group = generic_device_group,
.add_device = exynos_iommu_add_device,
.remove_device = exynos_iommu_remove_device,
.pgsize_bitmap = SECT_SIZE | LPAGE_SIZE | SPAGE_SIZE,