From: Benjamin Herrenschmidt on
All callers expect a boolean result which is true if the region
overlaps a reserved region. However, the implementation actually
returns -1 if there is no overlap, and a region index (0 based)
if there is.

Make it behave as callers (and common sense) expect.

Signed-off-by: Benjamin Herrenschmidt <benh(a)>
mm/memblock.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/mm/memblock.c b/mm/memblock.c
index 3024eb3..43840b3 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -504,7 +504,7 @@ int __init memblock_is_reserved(u64 addr)

int memblock_is_region_reserved(u64 base, u64 size)
- return memblock_overlaps_region(&memblock.reserved, base, size);
+ return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;


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