[POWERPC] Add an optional device_node pointer to the irq_host
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>
diff --git a/arch/powerpc/sysdev/mpc8xx_pic.c b/arch/powerpc/sysdev/mpc8xx_pic.c
index 2fc2bcd..f20a4d4 100644
--- a/arch/powerpc/sysdev/mpc8xx_pic.c
+++ b/arch/powerpc/sysdev/mpc8xx_pic.c
@@ -19,7 +19,6 @@
extern int cpm_get_irq(struct pt_regs *regs);
-static struct device_node *mpc8xx_pic_node;
static struct irq_host *mpc8xx_pic_host;
#define NR_MASK_WORDS ((NR_IRQS + 31) / 32)
static unsigned long ppc_cached_irq_mask[NR_MASK_WORDS];
@@ -122,7 +121,7 @@
static int mpc8xx_pic_host_match(struct irq_host *h, struct device_node *node)
{
- return mpc8xx_pic_node == node;
+ return h->of_node == node;
}
static int mpc8xx_pic_host_map(struct irq_host *h, unsigned int virq,
@@ -176,22 +175,24 @@
return -ENOMEM;
}
- mpc8xx_pic_node = of_node_get(np);
-
ret = of_address_to_resource(np, 0, &res);
- of_node_put(np);
if (ret)
- return ret;
+ goto out;
siu_reg = (void *)ioremap(res.start, res.end - res.start + 1);
- if (siu_reg == NULL)
- return -EINVAL;
+ if (siu_reg == NULL) {
+ ret = -EINVAL;
+ goto out;
+ }
- mpc8xx_pic_host = irq_alloc_host(IRQ_HOST_MAP_LINEAR, 64, &mpc8xx_pic_host_ops, 64);
+ mpc8xx_pic_host = irq_alloc_host(of_node_get(np), IRQ_HOST_MAP_LINEAR,
+ 64, &mpc8xx_pic_host_ops, 64);
if (mpc8xx_pic_host == NULL) {
printk(KERN_ERR "MPC8xx PIC: failed to allocate irq host!\n");
ret = -ENOMEM;
}
+out:
+ of_node_put(np);
return ret;
}