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| author |   Tanya Brokhman <tlinder@codeaurora.org> | 2014-04-01 11:01:12 +0300 |
|---|---|---|
| committer |   Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2014-05-05 09:31:33 +0300 |
| commit | 87ed89d21ede38f86be9419ca7c6dd4761764bbb (patch) | |
| tree | 465df391e8858ae8575a2bf72815e4302ab83386 /drivers/mtd | |
| parent | UBIFS: fix remount error path (diff) | |
| download | linux-dev-87ed89d21ede38f86be9419ca7c6dd4761764bbb.tar.xz linux-dev-87ed89d21ede38f86be9419ca7c6dd4761764bbb.zip | |
UBI: fix error path in __wl_get_peb
In case of an error (if there are not free PEB's for example),
__wl_get_peb will return a negative value. In order to prevent access
violation we need to test the returned value prior to using it later on.
Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>
Reviewed-by: Dolev Raviv <draviv@codeaurora.org>
Acked-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/ubi/wl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 02317c1c0238..457ead32105c 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -684,6 +684,9 @@ int ubi_wl_get_peb(struct ubi_device *ubi) peb = __wl_get_peb(ubi); spin_unlock(&ubi->wl_lock); + if (peb < 0) + return peb; + err = ubi_self_check_all_ff(ubi, peb, ubi->vid_hdr_aloffset, ubi->peb_size - ubi->vid_hdr_aloffset); if (err) { |