1 files changed, 4 insertions, 0 deletions

diff --git a/arch/powerpc/mm/lmb.c b/arch/powerpc/mm/lmb.c
index 716a2906a24d..e3a1e8dc536a 100644
--- a/arch/powerpc/mm/lmb.c
+++ b/arch/powerpc/mm/lmb.c
@@ -146,6 +146,10 @@ static long __init lmb_add_region(struct lmb_region *rgn, unsigned long base,
                 unsigned long rgnbase = rgn->region[i].base;
                 unsigned long rgnsize = rgn->region[i].size;
 
+                if ((rgnbase == base) && (rgnsize == size))
+                        /* Already have this region, so we're done */
+                        return 0;
+
                 adjacent = lmb_addrs_adjacent(base,size,rgnbase,rgnsize);
                 if ( adjacent > 0 ) {
                         rgn->region[i].base -= size;