From: Richard Weinberger <richard@nod.at>
Date: Mon, 10 Nov 2014 15:16:23 +0000 (+0100)
Subject: UBI: Fix stale pointers in ubi->lookuptbl
X-Git-Tag: omap-for-v4.1/fixes-rc1~135^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ee59ba8b064f692a1dee99b6f3ba30b0e904b2c1;p=pandora-kernel.git

UBI: Fix stale pointers in ubi->lookuptbl

In some error paths the WL sub-system gives up on a PEB
and frees it's ubi_wl_entry struct but does not set
the entry in ubi->lookuptbl to NULL.
Fastmap can stumble over such a stale pointer as it uses
ubi->lookuptbl to find all PEBs.

Fix this by introducing a new helper function which free()s
a WL entry and removes the reference from the lookup table.

Signed-off-by: Richard Weinberger <richard@nod.at>
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