linux-kernel - [PATCH 01/43] memblock: Fix memblock_is_region

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Message-Id: <1281071724-28740-2-git-send-email-benh@kernel.crashing.org>
Date:	Fri,  6 Aug 2010 15:14:42 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	linux-kernel@...r.kernel.org
Cc:	linux-mm@...ck.org, torvalds@...ux-foundation.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: [PATCH 01/43] memblock: Fix memblock_is_region_reserved() to return a boolean

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@...nel.crashing.org>
---
 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;
 }
 
 /*
-- 
1.7.0.4

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