timekeeping: Remove unused timekeeping_{get,set}_tai_offset()

The last caller to timekeeping_set_tai_offset() was in commit
0b5154fb9040 (timekeeping: Simplify tai updating from
do_adjtimex, 2013-03-22) and the last caller to
timekeeping_get_tai_offset() was in commit 76f4108892d9 (hrtimer:
Cleanup hrtimer accessors to the timekepeing state, 2014-07-16).
Remove these unused functions now that we handle TAI offsets
differently.

Cc: John Stultz <john.stultz@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>

kernel/time/timekeeping.c

@@ -1275,27 +1275,8 @@ error: /* even if we error out, we forwarded the time, so call update */
 }
 EXPORT_SYMBOL(timekeeping_inject_offset);
 
-
-/**
- * timekeeping_get_tai_offset - Returns current TAI offset from UTC
- *
- */
-s32 timekeeping_get_tai_offset(void)
-{
-	struct timekeeper *tk = &tk_core.timekeeper;
-	unsigned int seq;
-	s32 ret;
-
-	do {
-		seq = read_seqcount_begin(&tk_core.seq);
-		ret = tk->tai_offset;
-	} while (read_seqcount_retry(&tk_core.seq, seq));
-
-	return ret;
-}
-
 /**
- * __timekeeping_set_tai_offset - Lock free worker function
+ * __timekeeping_set_tai_offset - Sets the TAI offset from UTC and monotonic
  *
  */
 static void __timekeeping_set_tai_offset(struct timekeeper *tk, s32 tai_offset)
@@ -1304,24 +1285,6 @@ static void __timekeeping_set_tai_offset(struct timekeeper *tk, s32 tai_offset)
 	tk->offs_tai = ktime_add(tk->offs_real, ktime_set(tai_offset, 0));
 }
 
-/**
- * timekeeping_set_tai_offset - Sets the current TAI offset from UTC
- *
- */
-void timekeeping_set_tai_offset(s32 tai_offset)
-{
-	struct timekeeper *tk = &tk_core.timekeeper;
-	unsigned long flags;
-
-	raw_spin_lock_irqsave(&timekeeper_lock, flags);
-	write_seqcount_begin(&tk_core.seq);
-	__timekeeping_set_tai_offset(tk, tai_offset);
-	timekeeping_update(tk, TK_MIRROR | TK_CLOCK_WAS_SET);
-	write_seqcount_end(&tk_core.seq);
-	raw_spin_unlock_irqrestore(&timekeeper_lock, flags);
-	clock_was_set();
-}
-
 /**
  * change_clocksource - Swaps clocksources if a new one is available
  *

kernel/time/timekeeping.h

@@ -11,8 +11,6 @@ extern ktime_t ktime_get_update_offsets_now(unsigned int *cwsseq,
 extern int timekeeping_valid_for_hres(void);
 extern u64 timekeeping_max_deferment(void);
 extern int timekeeping_inject_offset(struct timespec *ts);
-extern s32 timekeeping_get_tai_offset(void);
-extern void timekeeping_set_tai_offset(s32 tai_offset);
 extern int timekeeping_suspend(void);
 extern void timekeeping_resume(void);