On Thu, 18 Jan 2018 14:05:05 +0000
Wei Yongjun <weiyongjun1@xxxxxxxxxx> wrote:
> Fix to return error code -ENOMEM from the kmem_cache_alloc() error
> handling case instead of 0, as done elsewhere in this function.
I guess you've used a static analysis code to detect this problem, can
you name it in the commit message, and paste the error/warning message
it reported next time you submit this kind of patch.
>
> Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
NAck. I you read the code you'll see that err is initialized to -ENOMEM
here [1], so these changes are actually not needed.
> ---
> drivers/mtd/ubi/wl.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
> index 77ab49f..2052a64 100644
> --- a/drivers/mtd/ubi/wl.c
> +++ b/drivers/mtd/ubi/wl.c
> @@ -1617,8 +1617,10 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
> 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;
> @@ -1637,8 +1639,10 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
> 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;
>
[1]https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/drivers/mtd/ubi/wl.c?h=next-20180118#n1596
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