genirq: Add kerneldoc for irq_disable.

	irq_state_clr_masked(desc);

}

/**

 * irq_disable - Mark interupt disabled

 * @desc:	irq descriptor which should be disabled

 *

 * If the chip does not implement the irq_disable callback, we

 * use a lazy disable approach. That means we mark the interrupt

 * disabled, but leave the hardware unmasked. That's an

 * optimization because we avoid the hardware access for the

 * common case where no interrupt happens after we marked it

 * disabled. If an interrupt happens, then the interrupt flow

 * handler masks the line at the hardware level and marks it

 * pending.

 */

void irq_disable(struct irq_desc *desc)

{

	irq_state_set_disabled(desc);