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authorThomas Gleixner <tglx@linutronix.de>2020-12-07 00:46:19 +0300
committerThomas Gleixner <tglx@linutronix.de>2020-12-11 12:40:52 +0300
commit33e62e832384c8cb523044e0e9d99d7133f98e93 (patch)
tree9197b255620c561e11bab9526cb20870742c6db3 /include/linux/rtc.h
parentc9e6189fb03123a7dfb93589280347b46f30b161 (diff)
downloadlinux-33e62e832384c8cb523044e0e9d99d7133f98e93.tar.xz
ntp, rtc: Move rtc_set_ntp_time() to ntp code
rtc_set_ntp_time() is not really RTC functionality as the code is just a user of RTC. Move it into the NTP code which allows further cleanups. Requested-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20201206220542.166871172@linutronix.de
Diffstat (limited to 'include/linux/rtc.h')
-rw-r--r--include/linux/rtc.h34
1 files changed, 0 insertions, 34 deletions
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index 22d1575e4991..ff62680b48ca 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -165,7 +165,6 @@ int __rtc_register_device(struct module *owner, struct rtc_device *rtc);
extern int rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm);
extern int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm);
-extern int rtc_set_ntp_time(struct timespec64 now, unsigned long *target_nsec);
int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm);
extern int rtc_read_alarm(struct rtc_device *rtc,
struct rtc_wkalrm *alrm);
@@ -205,39 +204,6 @@ static inline bool is_leap_year(unsigned int year)
return (!(year % 4) && (year % 100)) || !(year % 400);
}
-/* Determine if we can call to driver to set the time. Drivers can only be
- * called to set a second aligned time value, and the field set_offset_nsec
- * specifies how far away from the second aligned time to call the driver.
- *
- * This also computes 'to_set' which is the time we are trying to set, and has
- * a zero in tv_nsecs, such that:
- * to_set - set_delay_nsec == now +/- FUZZ
- *
- */
-static inline bool rtc_tv_nsec_ok(s64 set_offset_nsec,
- struct timespec64 *to_set,
- const struct timespec64 *now)
-{
- /* Allowed error in tv_nsec, arbitarily set to 5 jiffies in ns. */
- const unsigned long TIME_SET_NSEC_FUZZ = TICK_NSEC * 5;
- struct timespec64 delay = {.tv_sec = 0,
- .tv_nsec = set_offset_nsec};
-
- *to_set = timespec64_add(*now, delay);
-
- if (to_set->tv_nsec < TIME_SET_NSEC_FUZZ) {
- to_set->tv_nsec = 0;
- return true;
- }
-
- if (to_set->tv_nsec > NSEC_PER_SEC - TIME_SET_NSEC_FUZZ) {
- to_set->tv_sec++;
- to_set->tv_nsec = 0;
- return true;
- }
- return false;
-}
-
#define rtc_register_device(device) \
__rtc_register_device(THIS_MODULE, device)