1 files changed, 24 insertions, 42 deletions

diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index e535f86efa2f..8aa544f73a5e 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -11,7 +11,6 @@
  * Free Software Foundation;  either version 2 of the  License, or (at your
  * option) any later version.
  */
-#include <linux/clocksource.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
@@ -83,17 +82,11 @@ static void null_timer_ack(void) { /* nothing */ }
 /*
  * Null high precision timer functions for systems lacking one.
  */
-static unsigned int null_hpt_read(void)
+static cycle_t null_hpt_read(void)
 {
         return 0;
 }
 
-static void __init null_hpt_init(void)
-{
-        /* nothing */
-}
-
-
 /*
  * Timer ack for an R4k-compatible timer of a known frequency.
  */
@@ -101,10 +94,8 @@ static void c0_timer_ack(void)
 {
         unsigned int count;
 
-#ifndef CONFIG_SOC_PNX8550      /* pnx8550 resets to zero */
         /* Ack this timer interrupt and set the next one.  */
         expirelo += cycles_per_jiffy;
-#endif
         write_c0_compare(expirelo);
 
         /* Check to see if we have missed any timer interrupts.  */
@@ -118,7 +109,7 @@ static void c0_timer_ack(void)
 /*
  * High precision timer functions for a R4k-compatible timer.
  */
-static unsigned int c0_hpt_read(void)
+static cycle_t c0_hpt_read(void)
 {
         return read_c0_count();
 }
@@ -132,9 +123,6 @@ static void __init c0_hpt_timer_init(void)
 
 int (*mips_timer_state)(void);
 void (*mips_timer_ack)(void);
-unsigned int (*mips_hpt_read)(void);
-void (*mips_hpt_init)(void) __initdata = null_hpt_init;
-unsigned int mips_hpt_mask = 0xffffffff;
 
 /* last time when xtime and rtc are sync'ed up */
 static long last_rtc_update;
@@ -276,8 +264,7 @@ static struct irqaction timer_irqaction = {
 
 static unsigned int __init calibrate_hpt(void)
 {
-        u64 frequency;
-        u32 hpt_start, hpt_end, hpt_count, hz;
+        cycle_t frequency, hpt_start, hpt_end, hpt_count, hz;
 
         const int loops = HZ / 10;
         int log_2_loops = 0;
@@ -303,28 +290,23 @@ static unsigned int __init calibrate_hpt(void)
          * during the calculated number of periods between timer
          * interrupts.
          */
-        hpt_start = mips_hpt_read();
+        hpt_start = clocksource_mips.read();
         do {
                 while (mips_timer_state());
                 while (!mips_timer_state());
         } while (--i);
-        hpt_end = mips_hpt_read();
+        hpt_end = clocksource_mips.read();
 
-        hpt_count = (hpt_end - hpt_start) & mips_hpt_mask;
+        hpt_count = (hpt_end - hpt_start) & clocksource_mips.mask;
         hz = HZ;
-        frequency = (u64)hpt_count * (u64)hz;
+        frequency = hpt_count * hz;
 
         return frequency >> log_2_loops;
 }
 
-static cycle_t read_mips_hpt(void)
-{
-        return (cycle_t)mips_hpt_read();
-}
-
-static struct clocksource clocksource_mips = {
+struct clocksource clocksource_mips = {
         .name           = "MIPS",
-        .read           = read_mips_hpt,
+        .mask           = 0xffffffff,
         .is_continuous  = 1,
 };
 
@@ -333,7 +315,7 @@ static void __init init_mips_clocksource(void)
         u64 temp;
         u32 shift;
 
-        if (!mips_hpt_frequency || mips_hpt_read == null_hpt_read)
+        if (!mips_hpt_frequency || clocksource_mips.read == null_hpt_read)
                 return;
 
         /* Calclate a somewhat reasonable rating value */
@@ -347,7 +329,6 @@ static void __init init_mips_clocksource(void)
         }
         clocksource_mips.shift = shift;
         clocksource_mips.mult = (u32)temp;
-        clocksource_mips.mask = mips_hpt_mask;
 
         clocksource_register(&clocksource_mips);
 }
@@ -367,32 +348,36 @@ void __init time_init(void)
                                 -xtime.tv_sec, -xtime.tv_nsec);
 
         /* Choose appropriate high precision timer routines.  */
-        if (!cpu_has_counter && !mips_hpt_read)
+        if (!cpu_has_counter && !clocksource_mips.read)
                 /* No high precision timer -- sorry.  */
-                mips_hpt_read = null_hpt_read;
+                clocksource_mips.read = null_hpt_read;
         else if (!mips_hpt_frequency && !mips_timer_state) {
                 /* A high precision timer of unknown frequency.  */
-                if (!mips_hpt_read)
+                if (!clocksource_mips.read)
                         /* No external high precision timer -- use R4k.  */
-                        mips_hpt_read = c0_hpt_read;
+                        clocksource_mips.read = c0_hpt_read;
         } else {
                 /* We know counter frequency.  Or we can get it.  */
-                if (!mips_hpt_read) {
+                if (!clocksource_mips.read) {
                         /* No external high precision timer -- use R4k.  */
-                        mips_hpt_read = c0_hpt_read;
+                        clocksource_mips.read = c0_hpt_read;
 
                         if (!mips_timer_state) {
                                 /* No external timer interrupt -- use R4k.  */
-                                mips_hpt_init = c0_hpt_timer_init;
                                 mips_timer_ack = c0_timer_ack;
+                                /* Calculate cache parameters.  */
+                                cycles_per_jiffy =
+                                        (mips_hpt_frequency + HZ / 2) / HZ;
+                                /*
+                                 * This sets up the high precision
+                                 * timer for the first interrupt.
+                                 */
+                                c0_hpt_timer_init();
                         }
                 }
                 if (!mips_hpt_frequency)
                         mips_hpt_frequency = calibrate_hpt();
 
-                /* Calculate cache parameters.  */
-                cycles_per_jiffy = (mips_hpt_frequency + HZ / 2) / HZ;
-
                 /* Report the high precision timer rate for a reference.  */
                 printk("Using %u.%03u MHz high precision timer.\n",
                        ((mips_hpt_frequency + 500) / 1000) / 1000,
@@ -403,9 +388,6 @@ void __init time_init(void)
                 /* No timer interrupt ack (e.g. i8254).  */
                 mips_timer_ack = null_timer_ack;
 
-        /* This sets up the high precision timer for the first interrupt.  */
-        mips_hpt_init();
-
         /*
          * Call board specific timer interrupt setup.
          *