[PATCH 3/9] Revert "drm/virtio: Use dma_buf from GEM object instance"

[Dmitry Osipenko]

On 7/11/25 14:31, Simona Vetter wrote:
> On Fri, Jul 11, 2025 at 02:29:04PM +0300, Dmitry Osipenko wrote:
>> On 7/11/25 12:35, Thomas Zimmermann wrote:
>>> This reverts commit 415cb45895f43015515473fbc40563ca5eec9a7c.
>>>
>>> Reverting because the fix-up commits are suspected to cause regressions.
>>>
>>> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
>>
>> Are the fixes and stable tags missing in the patches? AFAICT, the intent
>> is to fix stable 6.15 kernel regression.
> 
> Yes, I'll add them when merging to drm-fixes.

On a second look, I don't see the reverted commits in 6.15, so only
6.16-rc should be affected.

>>> ---
>>>  drivers/gpu/drm/virtio/virtgpu_prime.c | 5 +++--
>>>  1 file changed, 3 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/virtio/virtgpu_prime.c b/drivers/gpu/drm/virtio/virtgpu_prime.c
>>> index 722cde5e2d86..97aaee26cb02 100644
>>> --- a/drivers/gpu/drm/virtio/virtgpu_prime.c
>>> +++ b/drivers/gpu/drm/virtio/virtgpu_prime.c
>>> @@ -204,15 +204,16 @@ static void virtgpu_dma_buf_free_obj(struct drm_gem_object *obj)
>>>  {
>>>  	struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
>>>  	struct virtio_gpu_device *vgdev = obj->dev->dev_private;
>>> +	struct dma_buf_attachment *attach = obj->import_attach;
>>>  
>>>  	if (drm_gem_is_imported(obj)) {
>>> -		struct dma_buf *dmabuf = bo->dma_buf;
>>> +		struct dma_buf *dmabuf = attach->dmabuf;
>>
>> Nit: I'd write this as `dmabuf = obj->import_attach->dmabuf` for more
>> consistency with drm_gem_is_imported()
> 
> Reverts shouldn't have any additional changes, even style nits imo, so
> I'll leave it as-is.

AFAICS, this patch is not a direct/clean revert, it reverts two commits
with manual edit. There is 44b6535d8ace on top of the reverted
415cb45895f4 and final result isn't same as a revert of 415cb45895f4.

-- 
Best regards,
Dmitry