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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>
This commit is contained in:
Xunlei Pang 2015-01-22 02:31:55 +00:00 committed by John Stultz
parent 966301a23e
commit 9a4a445e30
3 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/rtc/systohc.c
View File

@ -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) {

2
include/linux/rtc.h
View File

@ -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);

4
kernel/time/ntp.c
View File

@ -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)