Merge branch 'master' of /usr/src/ntfs-2.6/

1 files changed, 11 insertions, 9 deletions

diff --git a/arch/i386/kernel/time_hpet.c b/arch/i386/kernel/time_hpet.c
index 658c0629ba6a..9caeaa315cd7 100644
--- a/arch/i386/kernel/time_hpet.c
+++ b/arch/i386/kernel/time_hpet.c
@@ -275,6 +275,7 @@ static unsigned long PIE_freq = DEFAULT_RTC_INT_FREQ;
 static unsigned long PIE_count;
 
 static unsigned long hpet_rtc_int_freq; /* RTC interrupt frequency */
+static unsigned int hpet_t1_cmp; /* cached comparator register */
 
 /*
  * Timer 1 for RTC, we do not use periodic interrupt feature,
@@ -306,10 +307,12 @@ int hpet_rtc_timer_init(void)
         cnt = hpet_readl(HPET_COUNTER);
         cnt += ((hpet_tick*HZ)/hpet_rtc_int_freq);
         hpet_writel(cnt, HPET_T1_CMP);
+        hpet_t1_cmp = cnt;
         local_irq_restore(flags);
 
         cfg = hpet_readl(HPET_T1_CFG);
-        cfg |= HPET_TN_ENABLE | HPET_TN_SETVAL | HPET_TN_32BIT;
+        cfg &= ~HPET_TN_PERIODIC;
+        cfg |= HPET_TN_ENABLE | HPET_TN_32BIT;
         hpet_writel(cfg, HPET_T1_CFG);
 
         return 1;
@@ -319,8 +322,12 @@ static void hpet_rtc_timer_reinit(void)
 {
         unsigned int cfg, cnt;
 
-        if (!(PIE_on | AIE_on | UIE_on))
+        if (unlikely(!(PIE_on | AIE_on | UIE_on))) {
+                cfg = hpet_readl(HPET_T1_CFG);
+                cfg &= ~HPET_TN_ENABLE;
+                hpet_writel(cfg, HPET_T1_CFG);
                 return;
+        }
 
         if (PIE_on && (PIE_freq > DEFAULT_RTC_INT_FREQ))
                 hpet_rtc_int_freq = PIE_freq;
@@ -328,15 +335,10 @@ static void hpet_rtc_timer_reinit(void)
                 hpet_rtc_int_freq = DEFAULT_RTC_INT_FREQ;
 
         /* It is more accurate to use the comparator value than current count.*/
-        cnt = hpet_readl(HPET_T1_CMP);
+        cnt = hpet_t1_cmp;
         cnt += hpet_tick*HZ/hpet_rtc_int_freq;
         hpet_writel(cnt, HPET_T1_CMP);
-
-        cfg = hpet_readl(HPET_T1_CFG);
-        cfg |= HPET_TN_ENABLE | HPET_TN_SETVAL | HPET_TN_32BIT;
-        hpet_writel(cfg, HPET_T1_CFG);
-
-        return;
+        hpet_t1_cmp = cnt;
 }
 
 /*