[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/time.c

[sfrench/cifs-2.6.git] / arch / sparc64 / kernel / time.c

diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c
index 4352ee4d8dac32863bd588f47ce91ad5f2d8859c..e5d238970c7ec60e7d52a04495ffb7eb725340c5 100644 (file)
--- a/arch/sparc64/kernel/time.c
+++ b/arch/sparc64/kernel/time.c
@@ -1,7 +1,6 @@
-/* $Id: time.c,v 1.42 2002/01/23 14:33:55 davem Exp $
- * time.c: UltraSparc timer and TOD clock support.
+/* time.c: UltraSparc timer and TOD clock support.
  *
- * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1997, 2008 David S. Miller (davem@davemloft.net)
  * Copyright (C) 1998 Eddie C. Dost   (ecd@skynet.be)
  *
  * Based largely on code which is:
@@ -48,6 +47,8 @@
 #include <asm/uaccess.h>
 #include <asm/irq_regs.h>
 
+#include "entry.h"
+
 DEFINE_SPINLOCK(mostek_lock);
 DEFINE_SPINLOCK(rtc_lock);
 void __iomem *mstk48t02_regs = NULL;
@@ -508,6 +509,37 @@ static int __init has_low_battery(void)
        return (data1 == data2);        /* Was the write blocked? */
 }
 
+static void __init mostek_set_system_time(void __iomem *mregs)
+{
+       unsigned int year, mon, day, hour, min, sec;
+       u8 tmp;
+
+       spin_lock_irq(&mostek_lock);
+
+       /* Traditional Mostek chip. */
+       tmp = mostek_read(mregs + MOSTEK_CREG);
+       tmp |= MSTK_CREG_READ;
+       mostek_write(mregs + MOSTEK_CREG, tmp);
+
+       sec = MSTK_REG_SEC(mregs);
+       min = MSTK_REG_MIN(mregs);
+       hour = MSTK_REG_HOUR(mregs);
+       day = MSTK_REG_DOM(mregs);
+       mon = MSTK_REG_MONTH(mregs);
+       year = MSTK_CVT_YEAR( MSTK_REG_YEAR(mregs) );
+
+       xtime.tv_sec = mktime(year, mon, day, hour, min, sec);
+       xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
+       set_normalized_timespec(&wall_to_monotonic,
+                               -xtime.tv_sec, -xtime.tv_nsec);
+
+       tmp = mostek_read(mregs + MOSTEK_CREG);
+       tmp &= ~MSTK_CREG_READ;
+       mostek_write(mregs + MOSTEK_CREG, tmp);
+
+       spin_unlock_irq(&mostek_lock);
+}
+
 /* Probe for the real time clock chip. */
 static void __init set_system_time(void)
 {
@@ -520,7 +552,6 @@ static void __init set_system_time(void)
        unsigned long dregs = 0UL;
        void __iomem *bregs = 0UL;
 #endif
-       u8 tmp;
 
        if (!mregs && !dregs && !bregs) {
                prom_printf("Something wrong, clock regs not mapped yet.\n");
@@ -528,20 +559,11 @@ static void __init set_system_time(void)
        }               
 
        if (mregs) {
-               spin_lock_irq(&mostek_lock);
-
-               /* Traditional Mostek chip. */
-               tmp = mostek_read(mregs + MOSTEK_CREG);
-               tmp |= MSTK_CREG_READ;
-               mostek_write(mregs + MOSTEK_CREG, tmp);
+               mostek_set_system_time(mregs);
+               return;
+       }
 
-               sec = MSTK_REG_SEC(mregs);
-               min = MSTK_REG_MIN(mregs);
-               hour = MSTK_REG_HOUR(mregs);
-               day = MSTK_REG_DOM(mregs);
-               mon = MSTK_REG_MONTH(mregs);
-               year = MSTK_CVT_YEAR( MSTK_REG_YEAR(mregs) );
-       } else if (bregs) {
+       if (bregs) {
                unsigned char val = readb(bregs + 0x0e);
                unsigned int century;
 
@@ -596,14 +618,6 @@ static void __init set_system_time(void)
        xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
        set_normalized_timespec(&wall_to_monotonic,
                                -xtime.tv_sec, -xtime.tv_nsec);
-
-       if (mregs) {
-               tmp = mostek_read(mregs + MOSTEK_CREG);
-               tmp &= ~MSTK_CREG_READ;
-               mostek_write(mregs + MOSTEK_CREG, tmp);
-
-               spin_unlock_irq(&mostek_lock);
-       }
 }
 
 /* davem suggests we keep this within the 4M locked kernel image */
@@ -1027,7 +1041,7 @@ void __init time_init(void)
        setup_clockevent_multiplier(clock);
 
        sparc64_clockevent.max_delta_ns =
-               clockevent_delta2ns(0x7fffffffffffffff, &sparc64_clockevent);
+               clockevent_delta2ns(0x7fffffffffffffffUL, &sparc64_clockevent);
        sparc64_clockevent.min_delta_ns =
                clockevent_delta2ns(0xF, &sparc64_clockevent);
 
@@ -1707,6 +1721,11 @@ static void __exit rtc_mini_exit(void)
        misc_deregister(&rtc_mini_dev);
 }
 
+int __devinit read_current_timer(unsigned long *timer_val)
+{
+       *timer_val = tick_ops->get_tick();
+       return 0;
+}
 
 module_init(rtc_mini_init);
 module_exit(rtc_mini_exit);