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iommu: of: enforce const-ness of struct iommu_ops

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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>
This commit is contained in:
Robin Murphy
2016-04-07 18:42:05 +01:00
committed by Joerg Roedel
parent 3c3e8943ac
commit 53c92d7933
8 changed files with 20 additions and 20 deletions
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14
drivers/iommu/of_iommu.c
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@@ -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;
/*