|  | /* SPDX-License-Identifier: GPL-2.0-only */ | 
|  | /* | 
|  | * OF helpers for network devices. | 
|  | */ | 
|  |  | 
|  | #ifndef __LINUX_OF_NET_H | 
|  | #define __LINUX_OF_NET_H | 
|  |  | 
|  | #ifdef CONFIG_OF_NET | 
|  | #include <linux/of.h> | 
|  |  | 
|  | struct net_device; | 
|  | extern int of_get_phy_mode(struct device_node *np); | 
|  | extern const void *of_get_mac_address(struct device_node *np); | 
|  | extern struct net_device *of_find_net_device_by_node(struct device_node *np); | 
|  | #else | 
|  | static inline int of_get_phy_mode(struct device_node *np) | 
|  | { | 
|  | return -ENODEV; | 
|  | } | 
|  |  | 
|  | static inline const void *of_get_mac_address(struct device_node *np) | 
|  | { | 
|  | return ERR_PTR(-ENODEV); | 
|  | } | 
|  |  | 
|  | static inline struct net_device *of_find_net_device_by_node(struct device_node *np) | 
|  | { | 
|  | return NULL; | 
|  | } | 
|  | #endif | 
|  |  | 
|  | #endif /* __LINUX_OF_NET_H */ |