| Message ID | 1382426857-31975-1-git-send-email-peter.chen@freescale.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
> Some platforms may not define CONFIG_MFD_SYSCON (or haven't syscon), > it can fix build error for those platforms. > > Signed-off-by: Peter Chen <peter.chen@freescale.com> > --- > include/linux/mfd/syscon.h | 24 ++++++++++++++++++++++++ > 1 files changed, 24 insertions(+), 0 deletions(-) > > diff --git a/include/linux/mfd/syscon.h b/include/linux/mfd/syscon.h > index b473577..60bf0fb 100644 > --- a/include/linux/mfd/syscon.h > +++ b/include/linux/mfd/syscon.h > @@ -17,10 +17,34 @@ > > struct device_node; > > +#if IS_ENABLED(CONFIG_MFD_SYSCON) I'd prefer #ifdef. > 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(-ENXIO); ENOSYS?
diff --git a/include/linux/mfd/syscon.h b/include/linux/mfd/syscon.h index b473577..60bf0fb 100644 --- a/include/linux/mfd/syscon.h +++ b/include/linux/mfd/syscon.h @@ -17,10 +17,34 @@ struct device_node; +#if IS_ENABLED(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(-ENXIO); +} + +static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s) +{ + return ERR_PTR(-ENXIO); +} + +static inline struct regmap *syscon_regmap_lookup_by_pdevname(const char *s) +{ + return ERR_PTR(-ENXIO); +} +static inline struct regmap *syscon_regmap_lookup_by_phandle( + struct device_node *np, + const char *property) +{ + return ERR_PTR(-ENXIO); +} +#endif + #endif /* __LINUX_MFD_SYSCON_H__ */
Some platforms may not define CONFIG_MFD_SYSCON (or haven't syscon), it can fix build error for those platforms. Signed-off-by: Peter Chen <peter.chen@freescale.com> --- include/linux/mfd/syscon.h | 24 ++++++++++++++++++++++++ 1 files changed, 24 insertions(+), 0 deletions(-)