[SPARC]: Defer clock_probe to fs_initcall()

From: Bob Breuer <breuerr@mc.net>

That way all the of_driver bits will be ready.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/sparc/kernel/time.c b/arch/sparc/kernel/time.c
index 04eb1ea..845081b 100644 (file)
--- a/arch/sparc/kernel/time.c
+++ b/arch/sparc/kernel/time.c
@@ -225,6 +225,32 @@ static __inline__ int has_low_battery(void)
        return (data1 == data2);        /* Was the write blocked? */
 }
 
+static void __init mostek_set_system_time(void)
+{
+       unsigned int year, mon, day, hour, min, sec;
+       struct mostek48t02 *mregs;
+
+       mregs = (struct mostek48t02 *)mstk48t02_regs;
+       if(!mregs) {
+               prom_printf("Something wrong, clock regs not mapped yet.\n");
+               prom_halt();
+       }               
+       spin_lock_irq(&mostek_lock);
+       mregs->creg |= MSTK_CREG_READ;
+       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);
+       mregs->creg &= ~MSTK_CREG_READ;
+       spin_unlock_irq(&mostek_lock);
+}
+
 /* Probe for the real time clock chip on Sun4 */
 static __inline__ void sun4_clock_probe(void)
 {
@@ -273,6 +299,7 @@ static __inline__ void sun4_clock_probe(void)
 #endif
 }
 
+#ifndef CONFIG_SUN4
 static int __devinit clock_probe(struct of_device *op, const struct of_device_id *match)
 {
        struct device_node *dp = op->node;
@@ -307,6 +334,8 @@ static int __devinit clock_probe(struct of_device *op, const struct of_device_id
        if (mostek_read(mstk48t02_regs + MOSTEK_SEC) & MSTK_STOP)
                kick_start_clock();
 
+       mostek_set_system_time();
+
        return 0;
 }
 
@@ -325,56 +354,37 @@ static struct of_platform_driver clock_driver = {
 
 
 /* Probe for the mostek real time clock chip. */
-static void clock_init(void)
+static int __init clock_init(void)
 {
-       of_register_driver(&clock_driver, &of_bus_type);
+       return of_register_driver(&clock_driver, &of_bus_type);
 }
 
+/* Must be after subsys_initcall() so that busses are probed.  Must
+ * be before device_initcall() because things like the RTC driver
+ * need to see the clock registers.
+ */
+fs_initcall(clock_init);
+#endif /* !CONFIG_SUN4 */
+
 void __init sbus_time_init(void)
 {
-       unsigned int year, mon, day, hour, min, sec;
-       struct mostek48t02 *mregs;
-
-#ifdef CONFIG_SUN4
-       int temp;
-       struct intersil *iregs;
-#endif
 
        BTFIXUPSET_CALL(bus_do_settimeofday, sbus_do_settimeofday, BTFIXUPCALL_NORM);
        btfixup();
 
        if (ARCH_SUN4)
                sun4_clock_probe();
-       else
-               clock_init();
 
        sparc_init_timers(timer_interrupt);
        
 #ifdef CONFIG_SUN4
        if(idprom->id_machtype == (SM_SUN4 | SM_4_330)) {
-#endif
-       mregs = (struct mostek48t02 *)mstk48t02_regs;
-       if(!mregs) {
-               prom_printf("Something wrong, clock regs not mapped yet.\n");
-               prom_halt();
-       }               
-       spin_lock_irq(&mostek_lock);
-       mregs->creg |= MSTK_CREG_READ;
-       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);
-       mregs->creg &= ~MSTK_CREG_READ;
-       spin_unlock_irq(&mostek_lock);
-#ifdef CONFIG_SUN4
+               mostek_set_system_time();
        } else if(idprom->id_machtype == (SM_SUN4 | SM_4_260) ) {
                /* initialise the intersil on sun4 */
+               unsigned int year, mon, day, hour, min, sec;
+               int temp;
+               struct intersil *iregs;
 
                iregs=intersil_clock;
                if(!iregs) {