powerpc/eeh: More logs for EEH initialization

The patch adds more logs to EEH initialization functions for
debugging purpose. Also, the machine type (pSeries) is checked
in the platform initialization to assure it's the correct platform
to invoke it.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/platforms/pseries/eeh_dev.c

@@ -100,6 +100,8 @@ static int __init eeh_dev_phb_init(void)
 	list_for_each_entry_safe(phb, tmp, &hose_list, list_node)
 		eeh_dev_phb_init_dynamic(phb);
 
+	pr_info("EEH: devices created\n");
+
 	return 0;
 }
 

arch/powerpc/platforms/pseries/eeh_pseries.c

@@ -561,7 +561,19 @@ static struct eeh_ops pseries_eeh_ops = {
  */
 static int __init eeh_pseries_init(void)
 {
-	return eeh_ops_register(&pseries_eeh_ops);
+	int ret = -EINVAL;
+
+	if (!machine_is(pseries))
+		return ret;
+
+	ret = eeh_ops_register(&pseries_eeh_ops);
+	if (!ret)
+		pr_info("EEH: pSeries platform initialized\n");
+	else
+		pr_info("EEH: pSeries platform initialization failure (%d)\n",
+			ret);
+
+	return ret;
 }
 
 early_initcall(eeh_pseries_init);