iommu: of: enforce const-ness of struct iommu_ops

[cascardo/linux.git] / drivers / iommu / of_iommu.c

diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index 5fea665..af499ae 100644 (file)
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -98,12 +98,12 @@ EXPORT_SYMBOL_GPL(of_get_dma_window);
 struct of_iommu_node {
        struct list_head list;
        struct device_node *np;
-       struct iommu_ops *ops;
+       const struct iommu_ops *ops;
 };
 static LIST_HEAD(of_iommu_list);
 static DEFINE_SPINLOCK(of_iommu_lock);
 
-void of_iommu_set_ops(struct device_node *np, struct iommu_ops *ops)
+void of_iommu_set_ops(struct device_node *np, const struct iommu_ops *ops)
 {
        struct of_iommu_node *iommu = kzalloc(sizeof(*iommu), GFP_KERNEL);
 
@@ -119,10 +119,10 @@ void of_iommu_set_ops(struct device_node *np, struct iommu_ops *ops)
        spin_unlock(&of_iommu_lock);
 }
 
-struct iommu_ops *of_iommu_get_ops(struct device_node *np)
+const struct iommu_ops *of_iommu_get_ops(struct device_node *np)
 {
        struct of_iommu_node *node;
-       struct iommu_ops *ops = NULL;
+       const struct iommu_ops *ops = NULL;
 
        spin_lock(&of_iommu_lock);
        list_for_each_entry(node, &of_iommu_list, list)
@@ -134,12 +134,12 @@ struct iommu_ops *of_iommu_get_ops(struct device_node *np)
        return ops;
 }
 
-struct iommu_ops *of_iommu_configure(struct device *dev,
-                                    struct device_node *master_np)
+const struct iommu_ops *of_iommu_configure(struct device *dev,
+                                          struct device_node *master_np)
 {
        struct of_phandle_args iommu_spec;
        struct device_node *np;
-       struct iommu_ops *ops = NULL;
+       const struct iommu_ops *ops = NULL;
        int idx = 0;
 
        /*