[PATCH 3/4] iommu: constify fwnode in iommu_ops_from_fwnode()

[Krzysztof Kozlowski]

Make pointer to fwnode_handle a pointer to const for code safety.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
---
 drivers/iommu/iommu.c | 2 +-
 include/linux/iommu.h | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 26a31ba4f72d..a1f9bb8fa041 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -2987,7 +2987,7 @@ bool iommu_default_passthrough(void)
 }
 EXPORT_SYMBOL_GPL(iommu_default_passthrough);
 
-const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode)
+const struct iommu_ops *iommu_ops_from_fwnode(const struct fwnode_handle *fwnode)
 {
 	const struct iommu_ops *ops = NULL;
 	struct iommu_device *iommu;
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 600fc6e6f308..269ef0af7f20 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -903,7 +903,7 @@ int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode,
 		      const struct iommu_ops *ops);
 void iommu_fwspec_free(struct device *dev);
 int iommu_fwspec_add_ids(struct device *dev, const u32 *ids, int num_ids);
-const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode);
+const struct iommu_ops *iommu_ops_from_fwnode(const struct fwnode_handle *fwnode);
 
 static inline struct iommu_fwspec *dev_iommu_fwspec_get(struct device *dev)
 {
@@ -1253,7 +1253,7 @@ static inline int iommu_fwspec_add_ids(struct device *dev, u32 *ids,
 }
 
 static inline
-const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode)
+const struct iommu_ops *iommu_ops_from_fwnode(const struct fwnode_handle *fwnode)
 {
 	return NULL;
 }
-- 
2.34.1