From: Richard Weinberger <richard@xxxxxx>
UBI assumes that ubi_attach_info will only contain ubi_ainf_volume
structures for volumes with at least one LEB.
In scanning mode this is true because UBI can nicely create a ubi_ainf_volume
on demand while creating the EBA table.
For fastmap this is not true, the fastmap on-flash structure has a list of
all volumes, the ubi_ainf_volume structures are created from this list.
So it can happen that an empty volume ends up in init_volumes().
We can easely deal with that by looking into ->leb_count too.
Signed-off-by: Richard Weinberger <richard@xxxxxx>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@xxxxxxxxxxxxxxx>
---
drivers/mtd/ubi/vtbl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c
index 48b2915..c15809a 100644
--- a/drivers/mtd/ubi/vtbl.c
+++ b/drivers/mtd/ubi/vtbl.c
@@ -580,7 +580,7 @@ static int init_volumes(struct ubi_device *ubi,
/* Static volumes only */
av = ubi_find_av(ai, i);
- if (!av) {
+ if (!av || !av->leb_count) {
/*
* No eraseblocks belonging to this volume found. We
* don't actually know whether this static volume is
--
2.1.0
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