[IA64] Cleanup use of various #defines related to nodes

Some of the SN code & #defines related to compact nodes & IO discovery
have gotten stale over the years. This patch attempts to clean them up.
Some of the various SN MAX_xxx #defines were also unclear & misused.

The primary changes are:

	- use MAX_NUMNODES. This is the generic linux #define for the number
	  of nodes that are known to the generic kernel. Arrays & loops
	  for constructs that are 1:1 with linux-defined nodes should
	  use the linux #define - not an SN equivalent.

	- use MAX_COMPACT_NODES for MAX_NUMNODES + NUM_TIOS. This is the
	  number of nodes in the SSI system. Compact nodes are a hack to
	  get around the IA64 architectural limit of 256 nodes. Large SGI
	  systems have more than 256 nodes. When we upgrade to ACPI3.0,
	  I _hope_ that all nodes will be real nodes that are known to
	  the generic kernel. That will allow us to delete the notion
	  of "compact nodes".

	- add MAX_NUMALINK_NODES for the total number of nodes that
	  are in the numalink domain - all partitions.

	- simplified (understandable) scan_for_ionodes()

	- small amount of cleanup related to cnodes

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c
index b45db5133f5..7e9764a69dc 100644
--- a/arch/ia64/sn/kernel/tiocx.c
+++ b/arch/ia64/sn/kernel/tiocx.c
@@ -486,11 +486,10 @@ static int __init tiocx_init(void)
 
         bus_register(&tiocx_bus_type);
 
-        for (cnodeid = 0; cnodeid < MAX_COMPACT_NODES; cnodeid++) {
+        for (cnodeid = 0; cnodeid < num_cnodes; cnodeid++) {
                 nasid_t nasid;
 
-                if ((nasid = cnodeid_to_nasid(cnodeid)) < 0)
-                        break;  /* No more nasids .. bail out of loop */
+                nasid = cnodeid_to_nasid(cnodeid);
 
                 if ((nasid & 0x1) && is_fpga_brick(nasid)) {
                         struct hubdev_info *hubdev;