[RFC PATCH] UBI: fix rb_tree node comparison in add_map (1 reply)

The comparisons used in add_vol() shouldn't be identical. Pretty sure
the following is correct but it is completely untested.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---
drivers/mtd/ubi/fastmap.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

NOTE: I stumbled upon this code while implementing some rb_tree code
(and looking for some existing rb_tree code as a reference).

diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
index ead8613..60c7a20 100644
--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -125,9 +125,9 @@ static struct ubi_ainf_volume *add_vol(struct ubi_attach_info *ai, int vol_id,
parent = *p;
av = rb_entry(parent, struct ubi_ainf_volume, rb);

- if (vol_id > av->vol_id)
+ if (vol_id < av->vol_id)
p = &(*p)->rb_left;
- else if (vol_id > av->vol_id)
+ else
p = &(*p)->rb_right;
}

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