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authorRobin Murphy <Robin.Murphy@arm.com>2016-04-07 18:42:05 +0100
committerJoerg Roedel <jroedel@suse.de>2016-05-09 15:33:29 +0200
commit53c92d793395fdab9edbd2f79b084bb6b2e6ae79 (patch)
tree57a3dd2ec3c8c3b280adab8dbe400c8c19345b40 /drivers/iommu/of_iommu.c
parent3c3e8943ac6f36ca5d18ca61b30634fb560b4ebb (diff)
iommu: of: enforce const-ness of struct iommu_ops
As a set of driver-provided callbacks and static data, there is no compelling reason for struct iommu_ops to be mutable in core code, so enforce const-ness throughout. Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/of_iommu.c')
-rw-r--r--drivers/iommu/of_iommu.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index 5fea665af99d..af499aea0a1a 100644
--- 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;
/*