linux-kernel - Re: [PATCH] dma-buf: actually set signaling bit for private sub fences

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Message-ID: <081122e1-ecfe-9441-fb91-e1887f148529@amd.com>
Date:   Fri, 27 Jan 2023 08:49:25 +0100
From:   Christian König <christian.koenig@....com>
To:     Danilo Krummrich <dakr@...hat.com>, Arvind.Yadav@....com,
        sumit.semwal@...aro.org, gustavo@...ovan.org
Cc:     dri-devel@...ts.freedesktop.org, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dma-buf: actually set signaling bit for private sub
 fences

Am 26.01.23 um 23:25 schrieb Danilo Krummrich:
> On 1/26/23 07:58, Christian König wrote:
>> Am 26.01.23 um 01:28 schrieb Danilo Krummrich:
>>> In dma_fence_allocate_private_stub() set the signaling bit of the newly
>>> allocated private stub fence rather than the signaling bit of the
>>> shared dma_fence_stub.
>>>
>>> Fixes: c85d00d4fd8b ("dma-buf: set signaling bit for the stub fence")
>>> Signed-off-by: Danilo Krummrich <dakr@...hat.com>
>>
>> Good catch, Reviewed-by: Christian König <christian.koenig@....com>
>>
>> Should I push it upstream as well or do you have commit access?
>
> Thanks, I can push it to drm-misc-next.

This is clearly a bug fix so better push this to drm-misc-fixes and 
maybe even add a CC:stable tag.

Christian.

>
>>
>>> ---
>>>   drivers/dma-buf/dma-fence.c | 2 +-
>>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c
>>> index 406b4e26f538..0de0482cd36e 100644
>>> --- a/drivers/dma-buf/dma-fence.c
>>> +++ b/drivers/dma-buf/dma-fence.c
>>> @@ -167,7 +167,7 @@ struct dma_fence 
>>> *dma_fence_allocate_private_stub(void)
>>>                  0, 0);
>>>       set_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT,
>>> -        &dma_fence_stub.flags);
>>> +        &fence->flags);
>>>       dma_fence_signal(fence);
>>
>