From d3bafe32ca47bc3872837c1fe7874f9913de103f Mon Sep 17 00:00:00 2001
From: Jeffy Chen <jeffy.chen@rock-chips.com>
Date: Wed, 3 Feb 2016 18:13:55 +0800
Subject: [PATCH] fastboot: sparse: fix sparse blocks calculation
It may overflow in sparse_block_size_to_storage, use uint64_t instead in
the calculation.
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---
common/image-sparse.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/common/image-sparse.c b/common/image-sparse.c
index dffe844d548..2433192b20e 100644
--- a/common/image-sparse.c
+++ b/common/image-sparse.c
@@ -64,7 +64,8 @@ static unsigned int sparse_block_size_to_storage(unsigned int size,
sparse_storage_t *storage,
sparse_header_t *sparse)
{
- return size * sparse->blk_sz / storage->block_sz;
+ return (unsigned int)lldiv((uint64_t)size * sparse->blk_sz,
+ storage->block_sz);
}
static bool sparse_chunk_has_buffer(chunk_header_t *chunk)
--
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