iommu: exynos: remove useless device_add/remove callbacks

The driver doesn't need to do anything important in device add/remove
callbacks, because initialization will be done from device-tree specific
callbacks added later. IOMMU groups created by current code were never
used.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index d1a44d6745b71f7b28405e9e6add99c9eb2f943a..33d27547aae29e9aea0d6da99dda958bef0696f5 100644 (file)
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -1055,32 +1055,6 @@ static phys_addr_t exynos_iommu_iova_to_phys(struct iommu_domain *domain,
        return phys;
 }
 
-static int exynos_iommu_add_device(struct device *dev)
-{
-       struct iommu_group *group;
-       int ret;
-
-       group = iommu_group_get(dev);
-
-       if (!group) {
-               group = iommu_group_alloc();
-               if (IS_ERR(group)) {
-                       dev_err(dev, "Failed to allocate IOMMU group\n");
-                       return PTR_ERR(group);
-               }
-       }
-
-       ret = iommu_group_add_device(group, dev);
-       iommu_group_put(group);
-
-       return ret;
-}
-
-static void exynos_iommu_remove_device(struct device *dev)
-{
-       iommu_group_remove_device(dev);
-}
-
 static const struct iommu_ops exynos_iommu_ops = {
        .domain_init = exynos_iommu_domain_init,
        .domain_destroy = exynos_iommu_domain_destroy,
@@ -1090,8 +1064,6 @@ 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,
-       .add_device = exynos_iommu_add_device,
-       .remove_device = exynos_iommu_remove_device,
        .pgsize_bitmap = SECT_SIZE | LPAGE_SIZE | SPAGE_SIZE,
 };