diff options
| author | Boris Brezillon <boris.brezillon@free-electrons.com> | 2016-10-28 11:08:44 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-10 16:38:57 +0100 |
| commit | c89771511debaf5f4c488881af59c79d3a6fb023 (patch) | |
| tree | a49b062dbe10d1a2551f8623971168fa713cb07d | |
| parent | 591bf1362e9ec873110332e6914428a8aff84072 (diff) | |
ubi: fastmap: Fix add_vol() return value test in ubi_attach_fastmap()
commit 40b6e61ac72e99672e47cdb99c8d7d226004169b upstream.
Commit e96a8a3bb671 ("UBI: Fastmap: Do not add vol if it already
exists") introduced a bug by changing the possible error codes returned
by add_vol():
- this function no longer returns NULL in case of allocation failure
but return ERR_PTR(-ENOMEM)
- when a duplicate entry in the volume RB tree is found it returns
ERR_PTR(-EEXIST) instead of ERR_PTR(-EINVAL)
Fix the tests done on add_vol() return val to match this new behavior.
Fixes: e96a8a3bb671 ("UBI: Fastmap: Do not add vol if it already exists")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/mtd/ubi/fastmap.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c index fa681dab16d5..a01a70a8fd3b 100644 --- a/drivers/mtd/ubi/fastmap.c +++ b/drivers/mtd/ubi/fastmap.c @@ -751,11 +751,11 @@ static int ubi_attach_fastmap(struct ubi_device *ubi, fmvhdr->vol_type, be32_to_cpu(fmvhdr->last_eb_bytes)); - if (!av) - goto fail_bad; - if (PTR_ERR(av) == -EINVAL) { - ubi_err(ubi, "volume (ID %i) already exists", - fmvhdr->vol_id); + if (IS_ERR(av)) { + if (PTR_ERR(av) == -EEXIST) + ubi_err(ubi, "volume (ID %i) already exists", + fmvhdr->vol_id); + goto fail_bad; } |