Messages in this thread | | | Date | Mon, 7 Apr 2014 15:14:05 +0200 | Subject | Re: [RFC/PATCH] mtd: ubi: Test return value of __wl_get_peb | From | Richard Weinberger <> |
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On Tue, Apr 1, 2014 at 10:01 AM, Tanya Brokhman <tlinder@codeaurora.org> wrote: > 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> > > diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c > index 02317c1..457ead3 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) {
Acked-by: Richard Weinberger <richard@nod.at>
-- Thanks, //richard
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