linux-kernel - Re: [PATCH] dma-buf: Fix ifnullfree.cocci warnings

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Message-ID: <CAO_48GE5BRcGxjGC601FKwoXbMy_HZhMyUR=c3zZxCXhAmGKrg@mail.gmail.com>
Date:   Thu, 23 Nov 2017 16:15:56 +0530
From:   Sumit Semwal <sumit.semwal@...aro.org>
To:     Vasyl Gomonovych <gomonovych@...il.com>
Cc:     linux-media@...r.kernel.org,
        DRI mailing list <dri-devel@...ts.freedesktop.org>,
        Linaro MM SIG <linaro-mm-sig@...ts.linaro.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dma-buf: Fix ifnullfree.cocci warnings

Hello Vasyl,

On 22 November 2017 at 20:52, Vasyl Gomonovych <gomonovych@...il.com> wrote:
> NULL check before some freeing functions is not needed.
> drivers/dma-buf/dma-buf.c:1183:2-26: WARNING: NULL check before freeing debugfs_remove_recursive
> Generated by: scripts/coccinelle/free/ifnullfree.cocci

Thank you for your patch; applied to drm-misc-next.
>
> Signed-off-by: Vasyl Gomonovych <gomonovych@...il.com>
> ---
>  drivers/dma-buf/dma-buf.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
> index 4a038dcf5361..048827b06c03 100644
> --- a/drivers/dma-buf/dma-buf.c
> +++ b/drivers/dma-buf/dma-buf.c
> @@ -1179,8 +1179,7 @@ static int dma_buf_init_debugfs(void)
>
>  static void dma_buf_uninit_debugfs(void)
>  {
> -       if (dma_buf_debugfs_dir)
> -               debugfs_remove_recursive(dma_buf_debugfs_dir);
> +       debugfs_remove_recursive(dma_buf_debugfs_dir);
>  }
>  #else
>  static inline int dma_buf_init_debugfs(void)
> --
> 1.9.1
>



-- 
Thanks and regards,

Sumit Semwal
Linaro Mobile Group - Kernel Team Lead
Linaro.org │ Open source software for ARM SoCs