From: Olof Johansson <olof@lixom.net>
Date: Thu, 16 Feb 2006 03:40:44 +0000 (-0600)
Subject: [PATCH] powerpc: Fix OOPS in lparcfg on G5
X-Git-Tag: v2.6.16-rc5~72^2~3
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=2b9a32edba3af9ad4ccb23574bea0cc34455dc43;p=linux-2.6-omap-h63xx.git

[PATCH] powerpc: Fix OOPS in lparcfg on G5

Fallback gracefully when reading /proc/ppc64/lparcfg when the /rtas
device node can't be found.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 1ae96a8ed7e..e789fef4eb8 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -341,7 +341,7 @@ static int lparcfg_data(struct seq_file *m, void *v)
 	const char *system_id = "";
 	unsigned int *lp_index_ptr, lp_index = 0;
 	struct device_node *rtas_node;
-	int *lrdrp;
+	int *lrdrp = NULL;
 
 	rootdn = find_path_device("/");
 	if (rootdn) {
@@ -362,7 +362,9 @@ static int lparcfg_data(struct seq_file *m, void *v)
 	seq_printf(m, "partition_id=%d\n", (int)lp_index);
 
 	rtas_node = find_path_device("/rtas");
-	lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity", NULL);
+	if (rtas_node)
+		lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity",
+		                            NULL);
 
 	if (lrdrp == NULL) {
 		partition_potential_processors = vdso_data->processorCount;