[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>

1 files changed, 2 insertions, 3 deletions

diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pic.c b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
index 8c464c55b5d0..1d793e4b8d56 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_pic.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
@@ -244,7 +244,7 @@ static struct irq_chip mpc52xx_sdma_irqchip = {
 static int mpc52xx_irqhost_match(struct irq_host *h, struct device_node *node)
 {
         pr_debug("%s: node=%p\n", __func__, node);
-        return mpc52xx_irqhost->host_data == node;
+        return h->of_node == node;
 }
 
 static int mpc52xx_irqhost_xlate(struct irq_host *h, struct device_node *ct,
@@ -419,14 +419,13 @@ void __init mpc52xx_init_irq(void)
          * hw irq information provided by the ofw to linux virq
          */
 
-        mpc52xx_irqhost = irq_alloc_host(IRQ_HOST_MAP_LINEAR,
+        mpc52xx_irqhost = irq_alloc_host(picnode, IRQ_HOST_MAP_LINEAR,
                                          MPC52xx_IRQ_HIGHTESTHWIRQ,
                                          &mpc52xx_irqhost_ops, -1);
 
         if (!mpc52xx_irqhost)
                 panic(__FILE__ ": Cannot allocate the IRQ host\n");
 
-        mpc52xx_irqhost->host_data = picnode;
         printk(KERN_INFO "MPC52xx PIC is up and running!\n");
 }