From: John Stultz <john.stultz@linaro.org>
To: lkml <linux-kernel@vger.kernel.org>
Cc: Xunlei Pang <pang.xunlei@linaro.org>,
Arnd Bergmann <arnd.bergmann@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
John Stultz <john.stultz@linaro.org>
Subject: [PATCH 8/8] rtc: Convert rtc_set_ntp_time() to use timespec64
Date: Fri, 23 Jan 2015 17:44:00 -0800 [thread overview]
Message-ID: <1422063840-2837-9-git-send-email-john.stultz@linaro.org> (raw)
In-Reply-To: <1422063840-2837-1-git-send-email-john.stultz@linaro.org>
From: Xunlei Pang <pang.xunlei@linaro.org>
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>
---
drivers/rtc/systohc.c | 6 +++---
include/linux/rtc.h | 2 +-
kernel/time/ntp.c | 4 ++--
3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/rtc/systohc.c b/drivers/rtc/systohc.c
index bf3e242..eb71872 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 6d6be09..dcad7ee 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 87a346f..183dfe2 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)
--
1.9.1
prev parent reply other threads:[~2015-01-24 1:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-24 1:43 [GIT PULL] Time items for 3.20 John Stultz
2015-01-24 1:43 ` [PATCH 1/8] ktime: Optimize ktime_divns for constant divisors John Stultz
2015-01-24 1:43 ` [PATCH 2/8] time: Expose getboottime64 for in-kernel uses John Stultz
2015-01-24 1:43 ` [PATCH 3/8] time: Expose get_monotonic_boottime64 for in-kernel use John Stultz
2015-01-24 1:43 ` [PATCH 4/8] rtc: Update interface.c to use y2038-safe time interfaces John Stultz
2015-01-24 1:43 ` [PATCH 5/8] rtc: Update rtc-dev " John Stultz
2015-01-24 1:43 ` [PATCH 6/8] rtc: Modify rtc_hctosys() to address y2038 issues John Stultz
2015-01-24 1:43 ` [PATCH 7/8] rtc: Remove redundant rtc_valid_tm() from rtc_hctosys() John Stultz
2015-01-24 1:44 ` John Stultz [this message]
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