rtc: Convert rtc_set_ntp_time() to use timespec64

rtc_set_ntp_time() uses timespec which is y2038-unsafe,
so modify to use timespec64 which is y2038-safe, then
replace rtc_time_to_tm() with rtc_time64_to_tm().

Also adjust all its call sites(only NTP uses it) accordingly.

Cc: pang.xunlei <pang.xunlei@linaro.org>
Cc: Arnd Bergmann <arnd.bergmann@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>

3 files changed, 6 insertions, 6 deletions

diff --git a/drivers/rtc/systohc.c b/drivers/rtc/systohc.c
index bf3e242ccc5c..eb71872d0361 100644
--- a/drivers/rtc/systohc.c
+++ b/drivers/rtc/systohc.c
@@ -20,16 +20,16 @@
  *
  * If temporary failure is indicated the caller should try again 'soon'
  */
-int rtc_set_ntp_time(struct timespec now)
+int rtc_set_ntp_time(struct timespec64 now)
 {
         struct rtc_device *rtc;
         struct rtc_time tm;
         int err = -ENODEV;
 
         if (now.tv_nsec < (NSEC_PER_SEC >> 1))
-                rtc_time_to_tm(now.tv_sec, &tm);
+                rtc_time64_to_tm(now.tv_sec, &tm);
         else
-                rtc_time_to_tm(now.tv_sec + 1, &tm);
+                rtc_time64_to_tm(now.tv_sec + 1, &tm);
 
         rtc = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
         if (rtc) {
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index 6d6be09a2fe5..dcad7ee0d746 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -161,7 +161,7 @@ extern void devm_rtc_device_unregister(struct device *dev,
 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_mmss(struct rtc_device *rtc, unsigned long secs);
-extern int rtc_set_ntp_time(struct timespec now);
+extern int rtc_set_ntp_time(struct timespec64 now);
 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);
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index 87a346fd6d61..183dfe2191c6 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -488,13 +488,13 @@ static void sync_cmos_clock(struct work_struct *work)
 
         getnstimeofday64(&now);
         if (abs(now.tv_nsec - (NSEC_PER_SEC / 2)) <= tick_nsec * 5) {
-                struct timespec adjust = timespec64_to_timespec(now);
+                struct timespec64 adjust = now;
 
                 fail = -ENODEV;
                 if (persistent_clock_is_local)
                         adjust.tv_sec -= (sys_tz.tz_minuteswest * 60);
 #ifdef CONFIG_GENERIC_CMOS_UPDATE
-                fail = update_persistent_clock(adjust);
+                fail = update_persistent_clock(timespec64_to_timespec(adjust));
 #endif
 #ifdef CONFIG_RTC_SYSTOHC
                 if (fail == -ENODEV)