diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/sysdev/uic.c | 36 |
1 files changed, 19 insertions, 17 deletions
diff --git a/arch/powerpc/sysdev/uic.c b/arch/powerpc/sysdev/uic.c index ba024985e66..ae3eadddddb 100644 --- a/arch/powerpc/sysdev/uic.c +++ b/arch/powerpc/sysdev/uic.c @@ -53,9 +53,6 @@ struct uic { /* The remapper for this UIC */ struct irq_host *irqhost; - - /* For secondary UICs, the cascade interrupt's irqaction */ - struct irqaction cascade; }; static void uic_unmask_irq(unsigned int virq) @@ -221,23 +218,36 @@ static struct irq_host_ops uic_host_ops = { .xlate = uic_host_xlate, }; -irqreturn_t uic_cascade(int virq, void *data) +void uic_irq_cascade(unsigned int virq, struct irq_desc *desc) { - struct uic *uic = data; + struct uic *uic = get_irq_data(virq); u32 msr; int src; int subvirq; + spin_lock(&desc->lock); + if (desc->status & IRQ_LEVEL) + desc->chip->mask(virq); + else + desc->chip->mask_ack(virq); + spin_unlock(&desc->lock); + msr = mfdcr(uic->dcrbase + UIC_MSR); if (!msr) /* spurious interrupt */ - return IRQ_HANDLED; + goto uic_irq_ret; src = 32 - ffs(msr); subvirq = irq_linear_revmap(uic->irqhost, src); generic_handle_irq(subvirq); - return IRQ_HANDLED; +uic_irq_ret: + spin_lock(&desc->lock); + if (desc->status & IRQ_LEVEL) + desc->chip->ack(virq); + if (!(desc->status & IRQ_DISABLED) && desc->chip->unmask) + desc->chip->unmask(virq); + spin_unlock(&desc->lock); } static struct uic * __init uic_init_one(struct device_node *node) @@ -325,7 +335,6 @@ void __init uic_init_tree(void) if (interrupts) { /* Secondary UIC */ int cascade_virq; - int ret; uic = uic_init_one(np); if (! uic) @@ -334,15 +343,8 @@ void __init uic_init_tree(void) cascade_virq = irq_of_parse_and_map(np, 0); - uic->cascade.handler = uic_cascade; - uic->cascade.name = "UIC cascade"; - uic->cascade.dev_id = uic; - - ret = setup_irq(cascade_virq, &uic->cascade); - if (ret) - printk(KERN_ERR "Failed to setup_irq(%d) for " - "UIC%d cascade\n", cascade_virq, - uic->index); + set_irq_data(cascade_virq, uic); + set_irq_chained_handler(cascade_virq, uic_irq_cascade); /* FIXME: setup critical cascade?? */ } |