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Diffstat (limited to 'arch/alpha/kernel/irq.c')
-rw-r--r--arch/alpha/kernel/irq.c31
1 files changed, 20 insertions, 11 deletions
diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index fe912984d9b1..9ab234f48dd8 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -44,10 +44,11 @@ static char irq_user_affinity[NR_IRQS];
int irq_select_affinity(unsigned int irq)
{
+ struct irq_desc *desc = irq_to_desc[irq];
static int last_cpu;
int cpu = last_cpu + 1;
- if (!irq_desc[irq].chip->set_affinity || irq_user_affinity[irq])
+ if (!desc || !get_irq_desc_chip(desc)->set_affinity || irq_user_affinity[irq])
return 1;
while (!cpu_possible(cpu) ||
@@ -55,8 +56,8 @@ int irq_select_affinity(unsigned int irq)
cpu = (cpu < (NR_CPUS-1) ? cpu + 1 : 0);
last_cpu = cpu;
- cpumask_copy(irq_desc[irq].affinity, cpumask_of(cpu));
- irq_desc[irq].chip->set_affinity(irq, cpumask_of(cpu));
+ cpumask_copy(desc->affinity, cpumask_of(cpu));
+ get_irq_desc_chip(desc)->set_affinity(irq, cpumask_of(cpu));
return 0;
}
#endif /* CONFIG_SMP */
@@ -67,6 +68,7 @@ show_interrupts(struct seq_file *p, void *v)
int j;
int irq = *(loff_t *) v;
struct irqaction * action;
+ struct irq_desc *desc;
unsigned long flags;
#ifdef CONFIG_SMP
@@ -79,8 +81,13 @@ show_interrupts(struct seq_file *p, void *v)
#endif
if (irq < ACTUAL_NR_IRQS) {
- raw_spin_lock_irqsave(&irq_desc[irq].lock, flags);
- action = irq_desc[irq].action;
+ desc = irq_to_desc(irq);
+
+ if (!desc)
+ return 0;
+
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ action = desc->action;
if (!action)
goto unlock;
seq_printf(p, "%3d: ", irq);
@@ -90,7 +97,7 @@ show_interrupts(struct seq_file *p, void *v)
for_each_online_cpu(j)
seq_printf(p, "%10u ", kstat_irqs_cpu(irq, j));
#endif
- seq_printf(p, " %14s", irq_desc[irq].chip->name);
+ seq_printf(p, " %14s", get_irq_desc_chip(desc)->name);
seq_printf(p, " %c%s",
(action->flags & IRQF_DISABLED)?'+':' ',
action->name);
@@ -103,7 +110,7 @@ show_interrupts(struct seq_file *p, void *v)
seq_putc(p, '\n');
unlock:
- raw_spin_unlock_irqrestore(&irq_desc[irq].lock, flags);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
} else if (irq == ACTUAL_NR_IRQS) {
#ifdef CONFIG_SMP
seq_puts(p, "IPI: ");
@@ -142,8 +149,10 @@ handle_irq(int irq)
* handled by some other CPU. (or is disabled)
*/
static unsigned int illegal_count=0;
+ struct irq_desc *desc = irq_to_desc(irq);
- if ((unsigned) irq > ACTUAL_NR_IRQS && illegal_count < MAX_ILLEGAL_IRQS ) {
+ if (!desc || ((unsigned) irq > ACTUAL_NR_IRQS &&
+ illegal_count < MAX_ILLEGAL_IRQS)) {
irq_err_count++;
illegal_count++;
printk(KERN_CRIT "device_interrupt: invalid interrupt %d\n",
@@ -151,14 +160,14 @@ handle_irq(int irq)
return;
}
- irq_enter();
/*
- * __do_IRQ() must be called with IPL_MAX. Note that we do not
+ * From here we must proceed 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);
+ irq_enter();
+ generic_handle_irq_desc(irq, desc);
irq_exit();
}