From df73de9b0d412915384396637bf67ef9208161e9 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 22 Oct 2013 16:46:25 +0800 Subject: 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: Peter Chen Signed-off-by: Lee Jones --- include/linux/mfd/syscon.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/include/linux/mfd/syscon.h b/include/linux/mfd/syscon.h index b473577f..8789fa3c 100644 --- a/include/linux/mfd/syscon.h +++ b/include/linux/mfd/syscon.h @@ -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__ */ -- cgit v1.1