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Subject[ 20/54] md: Reassigned the parameters if read_seqretry returned true in func md_is_badblock.
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3.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: majianpeng <majianpeng@gmail.com>

commit ab05613a0646dcc11049692d54bae76ca9ffa910 upstream.

This bug was introduced by commit(v3.0-rc7-126-g2230dfe).
So fix is suitable for 3.0.y thru 3.6.y.

Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/md/md.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -7907,9 +7907,9 @@ int md_is_badblock(struct badblocks *bb,
sector_t *first_bad, int *bad_sectors)
{
int hi;
- int lo = 0;
+ int lo;
u64 *p = bb->page;
- int rv = 0;
+ int rv;
sector_t target = s + sectors;
unsigned seq;

@@ -7924,7 +7924,8 @@ int md_is_badblock(struct badblocks *bb,

retry:
seq = read_seqbegin(&bb->lock);
-
+ lo = 0;
+ rv = 0;
hi = bb->count;

/* Binary search between lo and hi for 'target'



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