On second thought, the entire sw_irq_unmask is somewhat strange:
since SW_INT_IRQNO_ENMI == 32 it will never be that the following is reached:
static void sw_irq_unmask(struct irq_data *irqd)
{
unsigned int irq = irqd->irq;
if(irq < 32){
writel(readl(SW_INT_ENABLE_REG0) | (1<<irq),
SW_INT_ENABLE_REG0);
writel(readl(SW_INT_MASK_REG0) & ~(1 << irq), SW_INT_MASK_REG0);
if(irq == SW_INT_IRQNO_ENMI) /* must clear pending bit when
enabled */ <--- (irq == 32) ?!
writel((1 << SW_INT_IRQNO_ENMI),
SW_INT_IRQ_PENDING_REG0); <--------------------- unreachable
} else if(irq < 64){
// It would have to move to here.
// Probably SW_INT_IRQ_PENDING_REG0 would be
SW_INT_IRQ_PENDING_REG1 then.
Hmm...
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