[PATCH v2] drm/syncobj: Fix sync syncobj issue

[Das, Nirmoy]

Hi Christian,

On 7/12/2022 12:26 PM, Christian König wrote:
> Ping to the Intel guys here. Especially Lucas/Nirmoy/Lionel.
>
> IIRC you stumbled over that problem as well, have you found any solution?

I might be wrong but  I think you are talking about 
igt at syncobj_timeline@transfer-timeline-point testcase which seems to be

green in CI now 
https://intel-gfx-ci.01.org/tree/drm-tip/igt@syncobj_timeline@transfer-timeline-point.html

Lucas found out that the issues got fixed after ec8d985ff26f ("drm: use 
dma_fence_unwrap_merge() in drm_syncobj")


Regards,

Nirmoy

>
> Regards,
> Christian.
>
> Am 07.07.22 um 12:29 schrieb jie1zhan:
>> enable signaling after flatten dma_fence_chains on transfer
>>
>> Signed-off-by: jie1zhan <jesse.zhang at amd.com>
>> ---
>>   drivers/gpu/drm/drm_syncobj.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/gpu/drm/drm_syncobj.c 
>> b/drivers/gpu/drm/drm_syncobj.c
>> index 7e48dcd1bee4..0d9d3577325f 100644
>> --- a/drivers/gpu/drm/drm_syncobj.c
>> +++ b/drivers/gpu/drm/drm_syncobj.c
>> @@ -920,6 +920,7 @@ static int 
>> drm_syncobj_transfer_to_timeline(struct drm_file *file_private,
>>       if (ret)
>>           goto err_free_fence;
>>   +    dma_fence_enable_sw_signaling(fence);
>>       chain = dma_fence_chain_alloc();
>>       if (!chain) {
>>           ret = -ENOMEM;
>