[libvirt] PATCH: Fix node device APIs for RHEL-5 vintage HAL

[Daniel P. Berrange]

In the node device APIs we look for a property in HAL call info.subsystem.
Turns out this is a fairly recent addition to HAL, and it used to be 
called  'linux.subsystem' in RHEL-5 vintage & earlier. This means we never
see any PCI / USB devices in libvirt when on RHEL-5.

This patch makes us check for both those properties, since the values 
are the same for each - just the property name changed

Daniel

Index: src/node_device_hal.c
===================================================================
RCS file: /data/cvs/libvirt/src/node_device_hal.c,v
retrieving revision 1.9
diff -u -p -r1.9 node_device_hal.c
--- src/node_device_hal.c	2 Mar 2009 17:41:13 -0000	1.9
+++ src/node_device_hal.c	12 Mar 2009 14:07:12 -0000
@@ -357,7 +357,8 @@ static int gather_capabilities(LibHalCon
             goto failure;
     }
 
-    if (get_str_prop(ctx, udi, "info.subsystem", &bus_name) == 0) {
+    if (get_str_prop(ctx, udi, "info.subsystem", &bus_name) == 0 ||
+        get_str_prop(ctx, udi, "linux.subsystem", &bus_name) == 0) {
         rv = gather_capability(ctx, udi, bus_name, &caps);
         if (rv != 0)
             goto failure;


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