[ARM] Merge individual ARM sub-trees

[powerpc.git] / arch / arm / mach-versatile / core.c

diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index 3b85761..5719694 100644 (file)
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -27,6 +27,7 @@
 #include <linux/amba/bus.h>
 #include <linux/amba/clcd.h>
 
+#include <asm/cnt32_to_63.h>
 #include <asm/system.h>
 #include <asm/hardware.h>
 #include <asm/io.h>
@@ -77,7 +78,7 @@ static struct irq_chip sic_chip = {
 };
 
 static void
-sic_handle_irq(unsigned int irq, struct irqdesc *desc)
+sic_handle_irq(unsigned int irq, struct irq_desc *desc)
 {
        unsigned long status = readl(VA_SIC_BASE + SIC_IRQ_STATUS);
 
@@ -123,7 +124,7 @@ void __init versatile_init_irq(void)
        for (i = IRQ_SIC_START; i <= IRQ_SIC_END; i++) {
                if ((PIC_MASK & (1 << (i - IRQ_SIC_START))) == 0) {
                        set_irq_chip(i, &sic_chip);
-                       set_irq_handler(i, do_level_IRQ);
+                       set_irq_handler(i, handle_level_irq);
                        set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
                }
        }
@@ -228,14 +229,19 @@ void __init versatile_map_io(void)
 
 /*
  * This is the Versatile sched_clock implementation.  This has
- * a resolution of 41.7ns, and a maximum value of about 179s.
+ * a resolution of 41.7ns, and a maximum value of about 35583 days.
+ *
+ * The return value is guaranteed to be monotonic in that range as
+ * long as there is always less than 89 seconds between successive
+ * calls to this function.
  */
 unsigned long long sched_clock(void)
 {
-       unsigned long long v;
+       unsigned long long v = cnt32_to_63(readl(VERSATILE_REFCOUNTER));
 
-       v = (unsigned long long)readl(VERSATILE_REFCOUNTER) * 125;
-       do_div(v, 3);
+       /* the <<1 gets rid of the cnt_32_to_63 top bit saving on a bic insn */
+       v *= 125<<1;
+       do_div(v, 3<<1);
 
        return v;
 }