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    Subject[PATCH 4.9 68/70] mtd: ubi: wl: Fix error return code in ubi_wl_init()
    Date
    4.9-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Wei Yongjun <weiyongjun1@huawei.com>

    commit 7233982ade15eeac05c6f351e8d347406e6bcd2f upstream.

    Fix to return error code -ENOMEM from the kmem_cache_alloc() error
    handling case instead of 0, as done elsewhere in this function.

    Fixes: f78e5623f45b ("ubi: fastmap: Erase outdated anchor PEBs during
    attach")
    Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
    Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
    Signed-off-by: Richard Weinberger <richard@nod.at>
    Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/mtd/ubi/wl.c | 8 ++++++--
    1 file changed, 6 insertions(+), 2 deletions(-)

    --- a/drivers/mtd/ubi/wl.c
    +++ b/drivers/mtd/ubi/wl.c
    @@ -1615,8 +1615,10 @@ int ubi_wl_init(struct ubi_device *ubi,
    cond_resched();

    e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
    - if (!e)
    + if (!e) {
    + err = -ENOMEM;
    goto out_free;
    + }

    e->pnum = aeb->pnum;
    e->ec = aeb->ec;
    @@ -1635,8 +1637,10 @@ int ubi_wl_init(struct ubi_device *ubi,
    cond_resched();

    e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
    - if (!e)
    + if (!e) {
    + err = -ENOMEM;
    goto out_free;
    + }

    e->pnum = aeb->pnum;
    e->ec = aeb->ec;

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