[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 1ae96a8ed7e21f080327d71764589ec00feeaf2b..e789fef4eb8a1dc8f3dd210d884f98787fb7a211 100644 (file)
--- 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;