xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

rtc/lib: Provide y2038 safe rtc_tm_to_time()/rtc_time_to_tm() replacement

Browse Source 
As part of addressing "y2038 problem" for in-kernel uses, this patch
adds safe rtc_tm_to_time64()/rtc_time64_to_tm() respectively using
time64_t.

After this patch, rtc_tm_to_time() is deprecated and all its call
sites will be fixed using corresponding safe versions, it can be
removed when having no users. Also change rtc_tm_to_time64() to
return time64_t directly instead of just as a parameter like
rtc_tm_to_time() does.

After this patch, rtc_time_to_tm() is deprecated and all its call
sites will be fixed using corresponding safe versions, it can be
removed when having no users.

In addition, change rtc_tm_to_ktime() and rtc_ktime_to_tm() to use
the safe version in passing.

Signed-off-by: pang.xunlei <pang.xunlei@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
pang.xunlei
2014-11-18 19:15:19 +08:00
committed by John Stultz
parent 5322e4c264
commit c2c11ae4b6
2 changed files with 39 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
include/linux/rtc.h
View File

@@ -19,11 +19,28 @@
extern int rtc_month_days(unsigned int month, unsigned int year);
extern int rtc_year_days(unsigned int day, unsigned int month, unsigned int year);
extern int rtc_valid_tm(struct rtc_time *tm);
extern int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time);
extern void rtc_time_to_tm(unsigned long time, struct rtc_time *tm);
extern time64_t rtc_tm_to_time64(struct rtc_time *tm);
extern void rtc_time64_to_tm(time64_t time, struct rtc_time *tm);
ktime_t rtc_tm_to_ktime(struct rtc_time tm);
struct rtc_time rtc_ktime_to_tm(ktime_t kt);
/**
* Deprecated. Use rtc_time64_to_tm().
*/
static inline void rtc_time_to_tm(unsigned long time, struct rtc_time *tm)
{
rtc_time64_to_tm(time, tm);
}
/**
* Deprecated. Use rtc_tm_to_time64().
*/
static inline int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time)
{
*time = rtc_tm_to_time64(tm);
return 0;
}
#include <linux/device.h>
#include <linux/seq_file.h>