Merge branch 'hotfixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / hpet.c

diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index ea230ec69057a67477c0f69ef284a9668893b8a1..ad2b15a1334d919419b9040b52c2062dd5d3666d 100644 (file)
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -36,26 +36,15 @@ static inline void hpet_writel(unsigned long d, unsigned long a)
 }
 
 #ifdef CONFIG_X86_64
-
 #include <asm/pgtable.h>
-
-static inline void hpet_set_mapping(void)
-{
-       set_fixmap_nocache(FIX_HPET_BASE, hpet_address);
-       __set_fixmap(VSYSCALL_HPET, hpet_address, PAGE_KERNEL_VSYSCALL_NOCACHE);
-       hpet_virt_address = (void __iomem *)fix_to_virt(FIX_HPET_BASE);
-}
-
-static inline void hpet_clear_mapping(void)
-{
-       hpet_virt_address = NULL;
-}
-
-#else
+#endif
 
 static inline void hpet_set_mapping(void)
 {
        hpet_virt_address = ioremap_nocache(hpet_address, HPET_MMAP_SIZE);
+#ifdef CONFIG_X86_64
+       __set_fixmap(VSYSCALL_HPET, hpet_address, PAGE_KERNEL_VSYSCALL_NOCACHE);
+#endif
 }
 
 static inline void hpet_clear_mapping(void)
@@ -63,7 +52,6 @@ static inline void hpet_clear_mapping(void)
        iounmap(hpet_virt_address);
        hpet_virt_address = NULL;
 }
-#endif
 
 /*
  * HPET command line enable / disable
@@ -480,7 +468,7 @@ void hpet_disable(void)
 #define RTC_NUM_INTS           1
 
 static unsigned long hpet_rtc_flags;
-static unsigned long hpet_prev_update_sec;
+static int hpet_prev_update_sec;
 static struct rtc_time hpet_alarm_time;
 static unsigned long hpet_pie_count;
 static unsigned long hpet_t1_cmp;
@@ -587,6 +575,9 @@ int hpet_set_rtc_irq_bit(unsigned long bit_mask)
 
        hpet_rtc_flags |= bit_mask;
 
+       if ((bit_mask & RTC_UIE) && !(oldbits & RTC_UIE))
+               hpet_prev_update_sec = -1;
+
        if (!oldbits)
                hpet_rtc_timer_init();
 
@@ -664,7 +655,7 @@ static void hpet_rtc_timer_reinit(void)
                if (hpet_rtc_flags & RTC_PIE)
                        hpet_pie_count += lost_ints;
                if (printk_ratelimit())
-                       printk(KERN_WARNING "rtc: lost %d interrupts\n",
+                       printk(KERN_WARNING "hpet1: lost %d rtc interrupts\n",
                                lost_ints);
        }
 }
@@ -682,7 +673,8 @@ irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id)
 
        if (hpet_rtc_flags & RTC_UIE &&
            curr_time.tm_sec != hpet_prev_update_sec) {
-               rtc_int_flag = RTC_UF;
+               if (hpet_prev_update_sec >= 0)
+                       rtc_int_flag = RTC_UF;
                hpet_prev_update_sec = curr_time.tm_sec;
        }