Merge master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog

[linux-2.6-omap-h63xx.git] / arch / alpha / kernel / irq.c

diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index 76be5cf0de13234ea413451dfccc53c62eed3e39..da677f829f7689966bf09aeda6d89fc4b6a876d1 100644 (file)
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -68,34 +68,32 @@ show_interrupts(struct seq_file *p, void *v)
 #ifdef CONFIG_SMP
        int j;
 #endif
-       int i = *(loff_t *) v;
+       int irq = *(loff_t *) v;
        struct irqaction * action;
        unsigned long flags;
 
 #ifdef CONFIG_SMP
-       if (i == 0) {
+       if (irq == 0) {
                seq_puts(p, "           ");
-               for (i = 0; i < NR_CPUS; i++)
-                       if (cpu_online(i))
-                               seq_printf(p, "CPU%d       ", i);
+               for_each_online_cpu(j)
+                       seq_printf(p, "CPU%d       ", j);
                seq_putc(p, '\n');
        }
 #endif
 
-       if (i < ACTUAL_NR_IRQS) {
-               spin_lock_irqsave(&irq_desc[i].lock, flags);
-               action = irq_desc[i].action;
+       if (irq < ACTUAL_NR_IRQS) {
+               spin_lock_irqsave(&irq_desc[irq].lock, flags);
+               action = irq_desc[irq].action;
                if (!action) 
                        goto unlock;
-               seq_printf(p, "%3d: ",i);
+               seq_printf(p, "%3d: ", irq);
 #ifndef CONFIG_SMP
-               seq_printf(p, "%10u ", kstat_irqs(i));
+               seq_printf(p, "%10u ", kstat_irqs(irq));
 #else
-               for (j = 0; j < NR_CPUS; j++)
-                       if (cpu_online(j))
-                               seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
+               for_each_online_cpu(j)
+                       seq_printf(p, "%10u ", kstat_cpu(j).irqs[irq]);
 #endif
-               seq_printf(p, " %14s", irq_desc[i].handler->typename);
+               seq_printf(p, " %14s", irq_desc[irq].handler->typename);
                seq_printf(p, "  %c%s",
                        (action->flags & SA_INTERRUPT)?'+':' ',
                        action->name);
@@ -108,13 +106,12 @@ show_interrupts(struct seq_file *p, void *v)
 
                seq_putc(p, '\n');
 unlock:
-               spin_unlock_irqrestore(&irq_desc[i].lock, flags);
-       } else if (i == ACTUAL_NR_IRQS) {
+               spin_unlock_irqrestore(&irq_desc[irq].lock, flags);
+       } else if (irq == ACTUAL_NR_IRQS) {
 #ifdef CONFIG_SMP
                seq_puts(p, "IPI: ");
-               for (i = 0; i < NR_CPUS; i++)
-                       if (cpu_online(i))
-                               seq_printf(p, "%10lu ", cpu_data[i].ipi_count);
+               for_each_online_cpu(j)
+                       seq_printf(p, "%10lu ", cpu_data[j].ipi_count);
                seq_putc(p, '\n');
 #endif
                seq_printf(p, "ERR: %10lu\n", irq_err_count);
@@ -122,7 +119,6 @@ unlock:
        return 0;
 }
 
-
 /*
  * handle_irq handles all normal device IRQ's (the special
  * SMP cross-CPU interrupts have their own specific
@@ -155,8 +151,13 @@ handle_irq(int irq, struct pt_regs * regs)
        }
 
        irq_enter();
+       /*
+        * __do_IRQ() must be called with IPL_MAX. Note that we do not
+        * explicitly enable interrupts afterwards - some MILO PALcode
+        * (namely LX164 one) seems to have severe problems with RTI
+        * at IPL 0.
+        */
        local_irq_disable();
        __do_IRQ(irq, regs);
-       local_irq_enable();
        irq_exit();
 }