linux-kernel - Re: [PATCH] drm/ttm: Remove duplicate assignments to ttm->caching

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Message-ID: <d014c2af-2b03-0e65-0251-ba0a33b60a0a@kylinos.cn>
Date:   Fri, 30 Jun 2023 10:19:33 +0800
From:   Feng Jiang <jiangfeng@...inos.cn>
To:     Christian König <christian.koenig@....com>,
        ray.huang@....com, airlied@...il.com, daniel@...ll.ch,
        michael.j.ruhl@...el.com
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/ttm: Remove duplicate assignments to ttm->caching

On 2023/6/29 14:37, Christian König wrote:
> This has already been fixed with:
> 
> commit 2ce977df10c179138e2723b25c2d2c055a3e3cc6
> Author: Ma Jun <Jun.Ma2@....com>
> Date:   Wed May 31 13:30:51 2023 +0800
> 
>     drm/ttm: Remove redundant code in ttm_tt_init_fields
> 
>     Remove redundant assignment code for ttm->caching as it's overwritten
>     just a few lines later.
> 
>     v2:
>      - Update the commit message.
> 
>     Signed-off-by: Ma Jun <Jun.Ma2@....com>
>     Reviewed-by: Guchun Chen <guchun.chen@....com>
>     Reviewed-by: Christian König <christian.koenig@....com>
>     Signed-off-by: Christian König <christian.koenig@....com>
>     Link: https://patchwork.freedesktop.org/patch/msgid/20230531053051.3453509-1-Jun.Ma2@amd.com
> 
> 
> Regards,
> Christian.
> 
> Am 25.06.23 um 04:45 schrieb Feng Jiang:
>> The parameter 'caching' has already been assigned to
>> 'ttm->caching', so 'ttm_cached' is redundant.
>>
>> Fixes: 1b4ea4c5980f ("drm/ttm: set the tt caching state at creation time")
>> Signed-off-by: Feng Jiang <jiangfeng@...inos.cn>
>> ---
>>   drivers/gpu/drm/ttm/ttm_tt.c | 1 -
>>   1 file changed, 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
>> index ab725d9d14a6..1ce4b36ab33b 100644
>> --- a/drivers/gpu/drm/ttm/ttm_tt.c
>> +++ b/drivers/gpu/drm/ttm/ttm_tt.c
>> @@ -137,7 +137,6 @@ static void ttm_tt_init_fields(struct ttm_tt *ttm,
>>                      unsigned long extra_pages)
>>   {
>>       ttm->num_pages = (PAGE_ALIGN(bo->base.size) >> PAGE_SHIFT) + extra_pages;
>> -    ttm->caching = ttm_cached;
>>       ttm->page_flags = page_flags;
>>       ttm->dma_address = NULL;
>>       ttm->swap_storage = NULL;
> 
Sorry, I will check before sending next time, thanks!
-- 
Best regards,
Feng