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-rw-r--r--arch/powerpc/sysdev/uic.c36
1 files changed, 19 insertions, 17 deletions
diff --git a/arch/powerpc/sysdev/uic.c b/arch/powerpc/sysdev/uic.c
index ba02498..ae3eadd 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?? */
}