[PATCH 4/4] x86: rtc: Stop using rtc deprecated functions

From: John Stultz
Date: Fri Mar 09 2018 - 13:46:56 EST


From: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx>

rtc_time_to_tm() and rtc_tm_to_time() are deprecated because they
rely on 32bits variables and that will make rtc break in y2038/2016.
Stop using those two functions to safer 64bits ones.

Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: x86@xxxxxxxxxx
Cc: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Cc: Richard Cochran <richardcochran@xxxxxxxxx>
Cc: Prarit Bhargava <prarit@xxxxxxxxxx>
Cc: Stephen Boyd <stephen.boyd@xxxxxxxxxx>
Cc: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx>
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
---
arch/x86/kernel/rtc.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/rtc.c b/arch/x86/kernel/rtc.c
index 69ac9cb..f7b82ed 100644
--- a/arch/x86/kernel/rtc.c
+++ b/arch/x86/kernel/rtc.c
@@ -41,11 +41,11 @@ EXPORT_SYMBOL(rtc_lock);
*/
int mach_set_rtc_mmss(const struct timespec *now)
{
- unsigned long nowtime = now->tv_sec;
+ unsigned long long nowtime = now->tv_sec;
struct rtc_time tm;
int retval = 0;

- rtc_time_to_tm(nowtime, &tm);
+ rtc_time64_to_tm(nowtime, &tm);
if (!rtc_valid_tm(&tm)) {
retval = mc146818_set_time(&tm);
if (retval)
@@ -53,7 +53,7 @@ int mach_set_rtc_mmss(const struct timespec *now)
__func__, retval);
} else {
printk(KERN_ERR
- "%s: Invalid RTC value: write of %lx to RTC failed\n",
+ "%s: Invalid RTC value: write of %llx to RTC failed\n",
__func__, nowtime);
retval = -EINVAL;
}
--
2.7.4