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timekeeping: remove unused {read,update}_persistent_clock 

After arch/sh has removed the last reference to these functions,
we can remove them completely and just rely on the 64-bit time_t
based versions. This cleans up a rather ugly use of __weak
functions.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
Arnd Bergmann 2018-08-14 14:15:23 +02:00
parent 19f48591e6
commit 926617889d
3 changed files with 3 additions and 25 deletions
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6
include/linux/timekeeping32.h
View File

@ -52,10 +52,4 @@ static inline void getboottime(struct timespec *ts)
*ts = timespec64_to_timespec(ts64);
}
/*
* Persistent clock related interfaces
*/
extern void read_persistent_clock(struct timespec *ts);
extern int update_persistent_clock(struct timespec now);
#endif

10
kernel/time/ntp.c
View File

@ -555,17 +555,9 @@ static void sync_rtc_clock(void)
}
#ifdef CONFIG_GENERIC_CMOS_UPDATE
int __weak update_persistent_clock(struct timespec now)
{
return -ENODEV;
}
int __weak update_persistent_clock64(struct timespec64 now64)
{
struct timespec now;
now = timespec64_to_timespec(now64);
return update_persistent_clock(now);
return -ENODEV;
}
#endif

12
kernel/time/timekeeping.c
View File

@ -1467,7 +1467,7 @@ u64 timekeeping_max_deferment(void)
}
/**
* read_persistent_clock - Return time from the persistent clock.
* read_persistent_clock64 - Return time from the persistent clock.
*
* Weak dummy function for arches that do not yet support it.
* Reads the time from the battery backed persistent clock.
@ -1475,20 +1475,12 @@ u64 timekeeping_max_deferment(void)
*
* XXX - Do be sure to remove it once all arches implement it.
*/
void __weak read_persistent_clock(struct timespec *ts)
void __weak read_persistent_clock64(struct timespec64 *ts)
{
ts->tv_sec = 0;
ts->tv_nsec = 0;
}
void __weak read_persistent_clock64(struct timespec64 *ts64)
{
struct timespec ts;
read_persistent_clock(&ts);
*ts64 = timespec_to_timespec64(ts);
}
/**
* read_persistent_wall_and_boot_offset - Read persistent clock, and also offset
* from the boot.