Exemplo n.º 1
0
static unsigned int h8300_startup_irq(struct irq_data *data)
{
	if (is_ext_irq(data->irq))
		return h8300_enable_irq_pin(data->irq);
	else
		return 0;
}
Exemplo n.º 2
0
static unsigned int h8300_startup_irq(unsigned int irq)
{
	if (is_ext_irq(irq))
		return h8300_enable_irq_pin(irq);
	else
		return 0;
}
Exemplo n.º 3
0
int request_irq(unsigned int irq, 
		irqreturn_t (*handler)(int, void *, struct pt_regs *),
                unsigned long flags, const char *devname, void *dev_id)
{
	irq_handler_t *irq_handle;
	if (irq < 0 || irq >= NR_IRQS) {
		printk(KERN_ERR "Incorrect IRQ %d from %s\n", irq, devname);
		return -EINVAL;
	}

	if (irq_list[irq] || (h8300_enable_irq_pin(irq) == -EBUSY))
		return -EBUSY;

	if (use_kmalloc)
		irq_handle = kmalloc(sizeof(irq_handler_t), GFP_ATOMIC);
	else {
		/* use bootmem allocater */
		irq_handle = (irq_handler_t *)alloc_bootmem(sizeof(irq_handler_t));
		irq_handle = (irq_handler_t *)((unsigned long)irq_handle | 0x80000000);
	}

	if (irq_handle == NULL)
		return -ENOMEM;

	irq_handle->handler = handler;
	irq_handle->flags   = flags;
	irq_handle->count   = 0;
	irq_handle->dev_id  = dev_id;
	irq_handle->devname = devname;
	irq_list[irq] = irq_handle;

	if (irq_handle->flags & IRQF_SAMPLE_RANDOM)
		rand_initialize_irq(irq);

	enable_irq(irq);
	return 0;
}