提交 df73de9b 编写于 作者: P Peter Chen 提交者: Lee Jones

mfd: syscon: Return -ENOSYS if CONFIG_MFD_SYSCON is not enabled

Some platforms may not define CONFIG_MFD_SYSCON (or haven't syscon),
it can fix build error for these platforms.
Signed-off-by: NPeter Chen <peter.chen@freescale.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
上级 d460a6f3
......@@ -17,10 +17,35 @@
struct device_node;
#ifdef CONFIG_MFD_SYSCON
extern struct regmap *syscon_node_to_regmap(struct device_node *np);
extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
extern struct regmap *syscon_regmap_lookup_by_pdevname(const char *s);
extern struct regmap *syscon_regmap_lookup_by_phandle(
struct device_node *np,
const char *property);
#else
static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
{
return ERR_PTR(-ENOSYS);
}
static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
{
return ERR_PTR(-ENOSYS);
}
static inline struct regmap *syscon_regmap_lookup_by_pdevname(const char *s)
{
return ERR_PTR(-ENOSYS);
}
static inline struct regmap *syscon_regmap_lookup_by_phandle(
struct device_node *np,
const char *property)
{
return ERR_PTR(-ENOSYS);
}
#endif
#endif /* __LINUX_MFD_SYSCON_H__ */
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