int request_irq(unsigned int irq,
void (*handler)(int, void *, struct pt_regs *),
unsigned long irqflags,
const char * devname,
void *dev_id)
{
struct irqaction *action;
DEBUG_INT("request_irq: irq=%d, devname = %s\n", irq, devname);
if (irq >= ATLASINT_END)
return -EINVAL;
if (!handler)
return -EINVAL;
action = (struct irqaction *)kmalloc(sizeof(struct irqaction), GFP_KERNEL);
if(!action)
return -ENOMEM;
action->handler = handler;
action->flags = irqflags;
action->mask = 0;
action->name = devname;
action->dev_id = dev_id;
action->next = 0;
irq_desc[irq].action = action;
enable_atlas_irq(irq);
return 0;
}
static void end_atlas_irq(unsigned int irq)
{
if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
enable_atlas_irq(irq);
}
static unsigned int startup_atlas_irq(unsigned int irq)
{
enable_atlas_irq(irq);
return 0; /* never anything pending */
}