[MIPS] time: Delete dead cycles_per_jiffy, mips_timer_ack and null_timer_ack

cycles_per_jiffy was only ever getting assigned and the function pointer
not being called anymore and mips_timer_ack had gotten similarly stale.  I
leave the remaining assignments unfixed as a lighthouse pointing platform
maintainers to what needs a rewrite.  These changes make null_timer_ack()
unreferenced, so delete that too.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 0 insertions, 21 deletions

diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index e4b5e647b142..abadb8cb77c0 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -72,14 +72,6 @@ int update_persistent_clock(struct timespec now)
         return rtc_mips_set_mmss(now.tv_sec);
 }
 
-/* how many counter cycles in a jiffy */
-static unsigned long cycles_per_jiffy __read_mostly;
-
-/*
- * Null timer ack for systems not needing one (e.g. i8254).
- */
-static void null_timer_ack(void) { /* nothing */ }
-
 /*
  * Null high precision timer functions for systems lacking one.
  */
@@ -105,7 +97,6 @@ static cycle_t c0_hpt_read(void)
 }
 
 int (*mips_timer_state)(void);
-void (*mips_timer_ack)(void);
 
 /*
  * local_timer_interrupt() does profiling and process accounting
@@ -512,14 +503,6 @@ void __init time_init(void)
                 if (!clocksource_mips.read) {
                         /* No external high precision timer -- use R4k.  */
                         clocksource_mips.read = c0_hpt_read;
-
-                        if (!mips_timer_state) {
-                                /* No external timer interrupt -- use R4k.  */
-                                mips_timer_ack = c0_timer_ack;
-                                /* Calculate cache parameters.  */
-                                cycles_per_jiffy =
-                                        (mips_hpt_frequency + HZ / 2) / HZ;
-                        }
                 }
                 if (!mips_hpt_frequency)
                         mips_hpt_frequency = calibrate_hpt();
@@ -534,10 +517,6 @@ void __init time_init(void)
 #endif
         }
 
-        if (!mips_timer_ack)
-                /* No timer interrupt ack (e.g. i8254).  */
-                mips_timer_ack = null_timer_ack;
-
         /*
          * Call board specific timer interrupt setup.
          *