linux-kernel - Re: [PATCH -next] ubi: eba: Delete useless kfree code

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Date:   Wed, 23 Dec 2020 11:12:49 +0100
From:   Richard Weinberger <richard.weinberger@...il.com>
To:     Zheng Yongjun <zhengyongjun3@...wei.com>
Cc:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd@...ts.infradead.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] ubi: eba: Delete useless kfree code

On Wed, Dec 16, 2020 at 2:13 PM Zheng Yongjun <zhengyongjun3@...wei.com> wrote:
>
> The parameter of kfree function is NULL, so kfree code is useless, delete it.
>
> Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>
> ---
>  drivers/mtd/ubi/eba.c | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
> index 0edecfdbd01f..9c2840ffd2e9 100644
> --- a/drivers/mtd/ubi/eba.c
> +++ b/drivers/mtd/ubi/eba.c
> @@ -142,7 +142,6 @@ struct ubi_eba_table *ubi_eba_create_table(struct ubi_volume *vol,
>         return tbl;
>
>  err:
> -       kfree(tbl->entries);
>         kfree(tbl);
>
>         return ERR_PTR(err);

On Sat, Dec 19, 2020 at 1:52 PM Jubin Zhong <zhongjubin@...wei.com> wrote:
>
> data_size is already checked against zero when vol_type matches
> UBI_VID_STATIC. Remove the following dead code.
>
> Signed-off-by: Jubin Zhong <zhongjubin@...wei.com>
> ---
>  drivers/mtd/ubi/io.c | 7 +------
>  1 file changed, 1 insertion(+), 6 deletions(-)
>
> diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
> index 2f3312c..8a7306c 100644
> --- a/drivers/mtd/ubi/io.c
> +++ b/drivers/mtd/ubi/io.c
> @@ -913,12 +913,7 @@ static int validate_vid_hdr(const struct ubi_device *ubi,
>                                 ubi_err(ubi, "bad data_size");
>                                 goto bad;
>                         }
> -               } else if (lnum == used_ebs - 1) {
> -                       if (data_size == 0) {
> -                               ubi_err(ubi, "bad data_size at last LEB");
> -                               goto bad;
> -                       }
> -               } else {
> +               } else if (lnum > used_ebs - 1) {
>                         ubi_err(ubi, "too high lnum");
>                         goto bad;
>                 }
> --

Looks good, applied to my 5.12 queue!

-- 
Thanks,
//richard