powerpc/scom: Create debugfs files using ibm,chip-id if available

When creating the debugfs scom files, use "ibm,chip-id" as the scom%d
index rather than a simple made up number when possible.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/sysdev/scom.c b/arch/powerpc/sysdev/scom.c
index 413622d54395405a597bf9836f29ffb63719a827..cb20d542a5aafd3f3fb43292a288934708a1bbb9 100644 (file)
--- a/arch/powerpc/sysdev/scom.c
+++ b/arch/powerpc/sysdev/scom.c
@@ -196,8 +196,13 @@ static int scom_debug_init(void)
                return -1;
 
        i = rc = 0;
-       for_each_node_with_property(dn, "scom-controller")
-               rc |= scom_debug_init_one(root, dn, i++);
+       for_each_node_with_property(dn, "scom-controller") {
+               int id = of_get_ibm_chip_id(dn);
+               if (id == -1)
+                       id = i;
+               rc |= scom_debug_init_one(root, dn, id);
+               i++;
+       }
 
        return rc;
 }