powerpc: Consolidate mpic_alloc() OF address translation

Instead of using the open-coded "reg" property lookup and address
translation in mpic_alloc(), directly call of_address_to_resource().
This includes various workarounds for special cases which the naive
of_address_translate() does not.

Afterwards it is possible to remove the copiously copy-pasted calls to
of_address_translate() from the 85xx/86xx/powermac platforms.

Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 1 insertions, 8 deletions

diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
index d993b66f1abf..62b90c359699 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
@@ -188,7 +188,6 @@ static struct irqaction mpc85xxcds_8259_irqaction = {
 static void __init mpc85xx_cds_pic_init(void)
 {
 	struct mpic *mpic;
-	struct resource r;
 	struct device_node *np = NULL;
 
 	np = of_find_node_by_type(np, "open-pic");
@@ -198,13 +197,7 @@ static void __init mpc85xx_cds_pic_init(void)
 		return;
 	}
 
-	if (of_address_to_resource(np, 0, &r)) {
-		printk(KERN_ERR "Failed to map mpic register space\n");
-		of_node_put(np);
-		return;
-	}
-
-	mpic = mpic_alloc(np, r.start,
+	mpic = mpic_alloc(np, 0,
 			MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
 			0, 256, " OpenPIC  ");
 	BUG_ON(mpic == NULL);