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[POWERPC] 83xx: Return a point to the struct ipic from ipic_init()

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It's useful to have access to struct ipic handle that just got created
in ipic_init().

For example, if we want to setup an external IRQ with out
a device node we need access ipic->irqhost to create the virtual to HW
IRQ mapping and to set the IRQ sense.  With this we can mimic the old
sense array concept that existed in arch/ppc.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kumar Gala
2007-01-26 01:45:32 -06:00
parent e60bd7f14d
commit 126186a055
2 changed files with 10 additions and 7 deletions
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15
arch/powerpc/sysdev/ipic.c
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@@ -557,8 +557,7 @@ static struct irq_host_ops ipic_host_ops = {
.xlate = ipic_host_xlate,
};
void __init ipic_init(struct device_node *node,
unsigned int flags)
struct ipic * __init ipic_init(struct device_node *node, unsigned int flags)
{
struct ipic *ipic;
struct resource res;
@@ -566,7 +565,7 @@ void __init ipic_init(struct device_node *node,
ipic = alloc_bootmem(sizeof(struct ipic));
if (ipic == NULL)
return;
return NULL;
memset(ipic, 0, sizeof(struct ipic));
ipic->of_node = of_node_get(node);
@@ -576,12 +575,14 @@ void __init ipic_init(struct device_node *node,
&ipic_host_ops, 0);
if (ipic->irqhost == NULL) {
of_node_put(node);
return;
return NULL;
}
ret = of_address_to_resource(node, 0, &res);
if (ret)
return;
if (ret) {
of_node_put(node);
return NULL;
}
ipic->regs = ioremap(res.start, res.end - res.start + 1);
@@ -625,6 +626,8 @@ void __init ipic_init(struct device_node *node,
printk ("IPIC (%d IRQ sources) at %p\n", NR_IPIC_INTS,
primary_ipic->regs);
return ipic;
}
int ipic_set_priority(unsigned int virq, unsigned int priority)