From mboxrd@z Thu Jan 1 00:00:00 1970 From: peter.chen@freescale.com (Peter Chen) Date: Tue, 22 Oct 2013 15:27:37 +0800 Subject: [PATCH 1/1] mfd: syscon: return -ENXIO if CONFIG_MFD_SYSCON is not enabled Message-ID: <1382426857-31975-1-git-send-email-peter.chen@freescale.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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) 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__ */ -- 1.7.1