[RFC patch 7/8] genirq: generic chip: Add linear irq domain support

Russell King - ARM Linux
2013-05-03T22:23:01Z

On Fri, May 03, 2013 at 09:50:53PM -0000, Thomas Gleixner wrote:
> + /* Init mask cache ? */
> + if (dgc->gc_flags & IRQ_GC_INIT_MASK_CACHE) {
> + raw_spin_lock_irqsave(&gc->lock, flags);
> + gc->mask_cache = irq_reg_readl(gc->reg_base + ct->regs.mask);
> + raw_spin_unlock_irqrestore(&gc->lock, flags);
> + }

This looks a little weird to me - it seems that it'll re-read this
each time any irq is mapped in the domain, which is probably not
wanted.