net: wan: framer: constify of_phandle_args in xlate

The xlate callbacks are supposed to translate of_phandle_args to proper
provider without modifying the of_phandle_args. Make the argument
pointer to const for code safety and readability.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Simon Horman <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/wan/framer/framer-core.c

···
 	return ERR_PTR(-EPROBE_DEFER);
 }
 
-static struct framer *framer_of_get_from_provider(struct of_phandle_args *args)
+static struct framer *framer_of_get_from_provider(const struct of_phandle_args *args)
 {
 	struct framer_provider *framer_provider;
 	struct framer *framer;
···
  * should provide a custom of_xlate function that reads the *args* and returns
  * the appropriate framer.
  */
-struct framer *framer_provider_simple_of_xlate(struct device *dev, struct of_phandle_args *args)
+struct framer *framer_provider_simple_of_xlate(struct device *dev,
+					       const struct of_phandle_args *args)
 {
 	struct class_dev_iter iter;
 	struct framer *framer;
···
 struct framer_provider *
 __framer_provider_of_register(struct device *dev, struct module *owner,
 			      struct framer *(*of_xlate)(struct device *dev,
-							 struct of_phandle_args *args))
+							 const struct of_phandle_args *args))
 {
 	struct framer_provider *framer_provider;
 
···
 struct framer_provider *
 __devm_framer_provider_of_register(struct device *dev, struct module *owner,
 				   struct framer *(*of_xlate)(struct device *dev,
-							      struct of_phandle_args *args))
+							      const struct of_phandle_args *args))
 {
 	struct framer_provider **ptr, *framer_provider;
 

include/linux/framer/framer-provider.h

···
 	struct module		*owner;
 	struct list_head	list;
 	struct framer * (*of_xlate)(struct device *dev,
-				    struct of_phandle_args *args);
+				    const struct of_phandle_args *args);
 };
 
 static inline void framer_set_drvdata(struct framer *framer, void *data)
···
 				  const struct framer_ops *ops);
 
 struct framer *framer_provider_simple_of_xlate(struct device *dev,
-					       struct of_phandle_args *args);
+					       const struct of_phandle_args *args);
 
 struct framer_provider *
 __framer_provider_of_register(struct device *dev, struct module *owner,
 			      struct framer *(*of_xlate)(struct device *dev,
-							 struct of_phandle_args *args));
+							 const struct of_phandle_args *args));
 
 void framer_provider_of_unregister(struct framer_provider *framer_provider);
 
 struct framer_provider *
 __devm_framer_provider_of_register(struct device *dev, struct module *owner,
 				   struct framer *(*of_xlate)(struct device *dev,
-							      struct of_phandle_args *args));
+							      const struct of_phandle_args *args));
 
 void framer_notify_status_change(struct framer *framer);
 
···
 }
 
 static inline struct framer *framer_provider_simple_of_xlate(struct device *dev,
-							     struct of_phandle_args *args)
+							     const struct of_phandle_args *args)
 {
 	return ERR_PTR(-ENOSYS);
 }
···
 static inline struct framer_provider *
 __framer_provider_of_register(struct device *dev, struct module *owner,
 			      struct framer *(*of_xlate)(struct device *dev,
-							 struct of_phandle_args *args))
+							 const struct of_phandle_args *args))
 {
 	return ERR_PTR(-ENOSYS);
 }
···
 static inline struct framer_provider *
 __devm_framer_provider_of_register(struct device *dev, struct module *owner,
 				   struct framer *(*of_xlate)(struct device *dev,
-							      struct of_phandle_args *args))
+							      const struct of_phandle_args *args))
 {
 	return ERR_PTR(-ENOSYS);
 }