linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / arch / mips / sgi-ip22 / ip22-time.c

diff --git a/arch/mips/sgi-ip22/ip22-time.c b/arch/mips/sgi-ip22/ip22-time.c
index 173f768..b7300cc 100644 (file)
--- a/arch/mips/sgi-ip22/ip22-time.c
+++ b/arch/mips/sgi-ip22/ip22-time.c
@@ -35,7 +35,9 @@ static unsigned long indy_rtc_get_time(void)
 {
        unsigned int yrs, mon, day, hrs, min, sec;
        unsigned int save_control;
+       unsigned long flags;
 
+       spin_lock_irqsave(&rtc_lock, flags);
        save_control = hpc3c0->rtcregs[RTC_CMD] & 0xff;
        hpc3c0->rtcregs[RTC_CMD] = save_control | RTC_TE;
 
@@ -47,6 +49,7 @@ static unsigned long indy_rtc_get_time(void)
        yrs = BCD2BIN(hpc3c0->rtcregs[RTC_YEAR] & 0xff);
 
        hpc3c0->rtcregs[RTC_CMD] = save_control;
+       spin_unlock_irqrestore(&rtc_lock, flags);
 
        if (yrs < 45)
                yrs += 30;
@@ -60,6 +63,7 @@ static int indy_rtc_set_time(unsigned long tim)
 {
        struct rtc_time tm;
        unsigned int save_control;
+       unsigned long flags;
 
        to_tm(tim, &tm);
 
@@ -68,6 +72,7 @@ static int indy_rtc_set_time(unsigned long tim)
        if (tm.tm_year >= 100)
                tm.tm_year -= 100;
 
+       spin_lock_irqsave(&rtc_lock, flags);
        save_control = hpc3c0->rtcregs[RTC_CMD] & 0xff;
        hpc3c0->rtcregs[RTC_CMD] = save_control | RTC_TE;
 
@@ -80,6 +85,7 @@ static int indy_rtc_set_time(unsigned long tim)
        hpc3c0->rtcregs[RTC_HUNDREDTH_SECOND] = 0;
 
        hpc3c0->rtcregs[RTC_CMD] = save_control;
+       spin_unlock_irqrestore(&rtc_lock, flags);
 
        return 0;
 }
@@ -126,7 +132,7 @@ static __init void indy_time_init(void)
        unsigned long r4k_ticks[3];
        unsigned long r4k_tick;
 
-       /* 
+       /*
         * Figure out the r4k offset, the algorithm is very simple and works in
         * _all_ cases as long as the 8254 counter register itself works ok (as
         * an interrupt driving timer it does not because of bug, this is why