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[POWERPC] Provide a default irq_host match, which matches on an exact of_node

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The most common match semantic is an exact match based on the device node.
So provide a default implementation that does this, and hook it up if no
match routine is specified.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Michael Ellerman
2007-08-28 18:47:55 +10:00
committed by Paul Mackerras
parent 8528ab84eb
commit 6815800601
11 changed files with 9 additions and 62 deletions
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10
arch/powerpc/kernel/irq.c
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@@ -418,6 +418,11 @@ irq_hw_number_t virq_to_hw(unsigned int virq)
}
EXPORT_SYMBOL_GPL(virq_to_hw);
static int default_irq_host_match(struct irq_host *h, struct device_node *np)
{
return h->of_node != NULL && h->of_node == np;
}
__init_refok struct irq_host *irq_alloc_host(struct device_node *of_node,
unsigned int revmap_type,
unsigned int revmap_arg,
@@ -449,6 +454,9 @@ __init_refok struct irq_host *irq_alloc_host(struct device_node *of_node,
host->ops = ops;
host->of_node = of_node;
if (host->ops->match == NULL)
host->ops->match = default_irq_host_match;
spin_lock_irqsave(&irq_big_lock, flags);
/* If it's a legacy controller, check for duplicates and
@@ -523,7 +531,7 @@ struct irq_host *irq_find_host(struct device_node *node)
*/
spin_lock_irqsave(&irq_big_lock, flags);
list_for_each_entry(h, &irq_hosts, link)
if (h->ops->match != NULL && h->ops->match(h, node)) {
if (h->ops->match(h, node)) {
found = h;
break;
}