[PATCH linux-next] DM RAID: validate_raid_redundancy: Silence uninitialized variable warning

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drivers/md/dm-raid.c: In function 'raid_ctr':
drivers/md/dm-raid.c:453:53: warning: 'rebuilds_per_group' may be used uninitialized in this function [-Wuninitialized]
drivers/md/dm-raid.c:383:11: note: 'rebuilds_per_group' was declared here

It appears unlikely that rebuilds_per_group could be used before set, but set
it to 0 anyways just to shutup GCC.

Cc: Alasdair Kergon <agk@xxxxxxxxxx>
Cc: dm-devel@xxxxxxxxxx
Cc: Neil Brown <neilb@xxxxxxx>
Cc: linux-raid@xxxxxxxxxxxxxxx
Signed-off-by: Tim Gardner <tim.gardner@xxxxxxxxxxxxx>
---
 drivers/md/dm-raid.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 9d6bf19..8005caf 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -380,7 +380,7 @@ static int validate_region_size(struct raid_set *rs, unsigned long region_size)
 static int validate_raid_redundancy(struct raid_set *rs)
 {
 	unsigned i, rebuild_cnt = 0;
-	unsigned rebuilds_per_group, copies, d;
+	unsigned rebuilds_per_group = 0, copies, d;
 	unsigned group_size, last_group_start;
 
 	for (i = 0; i < rs->md.raid_disks; i++)
-- 
1.7.9.5

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