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authorbob picco <bpicco@meloft.net>2013-06-11 14:54:51 -0400
committerDavid S. Miller <davem@davemloft.net>2013-06-19 02:10:30 -0700
commit771a37ff4d80b80db3b0df3e7696f14b298c67b7 (patch)
treeca01b271e991cb89fa1ffef4c49331e55f093d2f /arch/sparc/mm
parentd72ee6be58b7c99a6e8da6584106c5958dae2bf8 (diff)
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>
Diffstat (limited to 'arch/sparc/mm')
-rw-r--r--arch/sparc/mm/init_64.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index a7171997adfd..04fd55a6e461 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -1098,7 +1098,14 @@ static int __init grab_mblocks(struct mdesc_handle *md)
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);

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