sparc64 address-congruence property
The Machine Description (MD) property "address-congruence-offset" is
optional. According to the MD specification the value is assumed 0UL when
not present. This caused early boot failure on T5.
Signed-off-by: Bob Picco <bob.picco@oracle.com>
CC: sparclinux@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index a717199..04fd55a 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -1098,7 +1098,14 @@
m->size = *val;
val = mdesc_get_property(md, node,
"address-congruence-offset", NULL);
- m->offset = *val;
+
+ /* The address-congruence-offset property is optional.
+ * Explicity zero it be identifty this.
+ */
+ if (val)
+ m->offset = *val;
+ else
+ m->offset = 0UL;
numadbg("MBLOCK[%d]: base[%llx] size[%llx] offset[%llx]\n",
count - 1, m->base, m->size, m->offset);