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/tqm85xx.c b/arch/powerpc/platforms/85xx/tqm85xx.c
index 2418bf8d074b..a46b9fc66205 100644
--- a/arch/powerpc/platforms/85xx/tqm85xx.c
+++ b/arch/powerpc/platforms/85xx/tqm85xx.c
@@ -47,7 +47,6 @@
 static void __init tqm85xx_pic_init(void)
 {
         struct mpic *mpic;
-        struct resource r;
         struct device_node *np;
 
         np = of_find_node_by_type(NULL, "open-pic");
@@ -56,13 +55,7 @@ static void __init tqm85xx_pic_init(void)
                 return;
         }
 
-        if (of_address_to_resource(np, 0, &r)) {
-                printk(KERN_ERR "Could not 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);