net: phylink: constify fwnode arguments

Both phylink_create() and phylink_fwnode_phy_connect() do not modify
the fwnode argument that they are passed, so lets constify these.

Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/phylink.c

@@ -708,7 +708,7 @@ static int phylink_validate(struct phylink *pl, unsigned long *supported,
 }
 
 static int phylink_parse_fixedlink(struct phylink *pl,
-				   struct fwnode_handle *fwnode)
+				   const struct fwnode_handle *fwnode)
 {
 	struct fwnode_handle *fixed_node;
 	bool pause, asym_pause, autoneg;
@@ -819,7 +819,8 @@ static int phylink_parse_fixedlink(struct phylink *pl,
 	return 0;
 }
 
-static int phylink_parse_mode(struct phylink *pl, struct fwnode_handle *fwnode)
+static int phylink_parse_mode(struct phylink *pl,
+			      const struct fwnode_handle *fwnode)
 {
 	struct fwnode_handle *dn;
 	const char *managed;
@@ -1441,7 +1442,7 @@ static void phylink_fixed_poll(struct timer_list *t)
 static const struct sfp_upstream_ops sfp_phylink_ops;
 
 static int phylink_register_sfp(struct phylink *pl,
-				struct fwnode_handle *fwnode)
+				const struct fwnode_handle *fwnode)
 {
 	struct sfp_bus *bus;
 	int ret;
@@ -1480,7 +1481,7 @@ static int phylink_register_sfp(struct phylink *pl,
  * must use IS_ERR() to check for errors from this function.
  */
 struct phylink *phylink_create(struct phylink_config *config,
-			       struct fwnode_handle *fwnode,
+			       const struct fwnode_handle *fwnode,
 			       phy_interface_t iface,
 			       const struct phylink_mac_ops *mac_ops)
 {
@@ -1809,7 +1810,7 @@ EXPORT_SYMBOL_GPL(phylink_of_phy_connect);
  * Returns 0 on success or a negative errno.
  */
 int phylink_fwnode_phy_connect(struct phylink *pl,
-			       struct fwnode_handle *fwnode,
+			       const struct fwnode_handle *fwnode,
 			       u32 flags)
 {
 	struct fwnode_handle *phy_fwnode;

include/linux/phylink.h

@@ -568,16 +568,17 @@ void phylink_generic_validate(struct phylink_config *config,
 			      unsigned long *supported,
 			      struct phylink_link_state *state);
 
-struct phylink *phylink_create(struct phylink_config *, struct fwnode_handle *,
-			       phy_interface_t iface,
-			       const struct phylink_mac_ops *mac_ops);
+struct phylink *phylink_create(struct phylink_config *,
+			       const struct fwnode_handle *,
+			       phy_interface_t,
+			       const struct phylink_mac_ops *);
 void phylink_destroy(struct phylink *);
 bool phylink_expects_phy(struct phylink *pl);
 
 int phylink_connect_phy(struct phylink *, struct phy_device *);
 int phylink_of_phy_connect(struct phylink *, struct device_node *, u32 flags);
 int phylink_fwnode_phy_connect(struct phylink *pl,
-			       struct fwnode_handle *fwnode,
+			       const struct fwnode_handle *fwnode,
 			       u32 flags);
 void phylink_disconnect_phy(struct phylink *);