Re: [PATCH v3] drm/ttm: Delete an unnecessary check before the function call "ttm_tt_destroy"

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On Mon, Jul 18, 2016 at 4:45 PM, Daniel Vetter <daniel@xxxxxxxx> wrote:
> On Mon, Jul 18, 2016 at 04:10:36PM +0200, SF Markus Elfring wrote:
>> From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
>> Date: Mon, 18 Jul 2016 16:06:18 +0200
>>
>> The ttm_tt_destroy() function tests whether its argument is NULL
>> and then returns immediately. Thus the test around the call is not needed.
>>
>> This issue was detected by using the Coccinelle software.
>>
>> Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
>
> When resending pls describe what changed (and why). Also I'd still like
> that smatch included in the commit message.

A similar change was made in drm-next, causing a merge conflict
between the drm-next and drm-misc trees.

commit 4279cb1423d96e53b6b98ae9f2b41003b013a31f
Author: Christian König <christian.koenig@xxxxxxx>
Date:   Mon Jun 6 10:17:51 2016 +0200

    drm/ttm: remove NULL checks when calling ttm_tt_destroy

    The function is a no-op with a NULL pointer.

    Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
    Signed-off-by: Christian König <christian.koenig@xxxxxxx>
    Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>


-- 
Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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