The patch (commit id: a0a6e06d545a753740c9d8d5ce2c4fdd3ab1c021) adding tracepoints for alarmtimers will build failed on S390 platform, due to S390 defconfig did not define CONFIG_RTC_LIB macro to define the rtc_ktime_to_tm() function which is used in this patch. Thus we should add dummy static inline functions in case CONFIG_RTC_LIB is not defined.
Signed-off-by: Baolin Wang <baolin.w...@linaro.org> Fixes: a0a6e06d545a ("time: alarmtimer: Add tracepoints for alarmtimers") --- Changes since v1: - Modify the commit log. --- include/linux/rtc.h | 49 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 48 insertions(+), 1 deletion(-) diff --git a/include/linux/rtc.h b/include/linux/rtc.h index b693ada..521f752 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -16,13 +16,60 @@ #include <linux/interrupt.h> #include <uapi/linux/rtc.h> +#ifdef CONFIG_RTC_LIB extern int rtc_month_days(unsigned int month, unsigned int year); -extern int rtc_year_days(unsigned int day, unsigned int month, unsigned int year); +extern int rtc_year_days(unsigned int day, unsigned int month, + unsigned int year); extern int rtc_valid_tm(struct rtc_time *tm); extern time64_t rtc_tm_to_time64(struct rtc_time *tm); extern void rtc_time64_to_tm(time64_t time, struct rtc_time *tm); ktime_t rtc_tm_to_ktime(struct rtc_time tm); struct rtc_time rtc_ktime_to_tm(ktime_t kt); +#else +static inline int rtc_month_days(unsigned int month, unsigned int year) +{ + return 0; +} + +static inline int rtc_year_days(unsigned int day, unsigned int month, + unsigned int year) +{ + return 0; +} + +static inline int rtc_valid_tm(struct rtc_time *tm) +{ + return 0; +} + +static inline time64_t rtc_tm_to_time64(struct rtc_time *tm) +{ + time64_t ret; + + memset(&ret, 0, sizeof(time64_t)); + return ret; +} + +static inline void rtc_time64_to_tm(time64_t time, struct rtc_time *tm) +{ +} + +static inline ktime_t rtc_tm_to_ktime(struct rtc_time tm) +{ + ktime_t ret; + + memset(&ret, 0, sizeof(ktime_t)); + return ret; +} + +static inline struct rtc_time rtc_ktime_to_tm(ktime_t kt) +{ + struct rtc_time ret; + + memset(&ret, 0, sizeof(struct rtc_time)); + return ret; +} +#endif /* * rtc_tm_sub - Return the difference in seconds. -- 1.7.9.5