Commit 87ed89d2 authored Apr 01, 2014 by Tanya Brokhman Committed by Artem Bityutskiy May 05, 2014

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>

parent fcdd57c8

drivers/mtd/ubi/wl.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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) {