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[POWERPC] Add an optional device_node pointer to the irq_host

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The majority of irq_host implementations (3 out of 4) are associated
with a device_node, and need to stash it somewhere. Rather than having
it somewhere different for each host, add an optional device_node pointer
to the irq_host structure.

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 18:47:54 +10:00
committed by Paul Mackerras
parent 0ae0b54565
commit 52964f87c6
26 changed files with 76 additions and 109 deletions
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11
arch/powerpc/sysdev/mpic.c
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@@ -271,7 +271,7 @@ static void _mpic_map_dcr(struct mpic *mpic, struct mpic_reg_bank *rb,
{
rb->dbase = mpic->dcr_base;
rb->doff = offset;
rb->dhost = dcr_map(mpic->of_node, rb->dbase + rb->doff, size);
rb->dhost = dcr_map(mpic->irqhost->of_node, rb->dbase + rb->doff, size);
BUG_ON(!DCR_MAP_OK(rb->dhost));
}
@@ -861,10 +861,8 @@ static struct irq_chip mpic_irq_ht_chip = {
static int mpic_host_match(struct irq_host *h, struct device_node *node)
{
struct mpic *mpic = h->host_data;
/* Exact match, unless mpic node is NULL */
return mpic->of_node == NULL || mpic->of_node == node;
return h->of_node == NULL || h->of_node == node;
}
static int mpic_host_map(struct irq_host *h, unsigned int virq,
@@ -985,10 +983,9 @@ struct mpic * __init mpic_alloc(struct device_node *node,
memset(mpic, 0, sizeof(struct mpic));
mpic->name = name;
mpic->of_node = of_node_get(node);
mpic->irqhost = irq_alloc_host(IRQ_HOST_MAP_LINEAR, isu_size,
&mpic_host_ops,
mpic->irqhost = irq_alloc_host(of_node_get(node), IRQ_HOST_MAP_LINEAR,
isu_size, &mpic_host_ops,
flags & MPIC_LARGE_VECTORS ? 2048 : 256);
if (mpic->irqhost == NULL) {
of_node_put(node);