void reserve_intc_vectors(struct intc_vect *vectors, unsigned int nr_vecs) { int i; for (i = 0; i < nr_vecs; i++) irq_reserve_irq(evt2irq(vectors[i].vect)); }
int irq_set_chip(unsigned int irq, struct irq_chip *chip) { unsigned long flags; struct irq_desc *desc = irq_get_desc_lock(irq, &flags, 0); if (!desc) return -EINVAL; if (!chip) chip = &no_irq_chip; desc->irq_data.chip = chip; irq_put_desc_unlock(desc, flags); irq_reserve_irq(irq); return 0; }
/** * irq_set_chip - set the irq chip for an irq * @irq: irq number * @chip: pointer to irq chip description structure */ int irq_set_chip(unsigned int irq, struct irq_chip *chip) { unsigned long flags; struct irq_desc *desc = irq_get_desc_lock(irq, &flags, 0); if (!desc) return -EINVAL; if (!chip) chip = &no_irq_chip; desc->irq_data.chip = chip; irq_put_desc_unlock(desc, flags); /* * For !CONFIG_SPARSE_IRQ make the irq show up in * allocated_irqs. For the CONFIG_SPARSE_IRQ case, it is * already marked, and this call is harmless. */ irq_reserve_irq(irq); return 0; }