Re: [PATCH 2/2] drm/panfrost: Propagate panfrost_fence_create() errors to the scheduler

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On Wed, 5 Feb 2020 13:47:55 +0000
Steven Price <steven.price@xxxxxxx> wrote:

> On 04/02/2020 14:35, Boris Brezillon wrote:
> > ->job_run() can return an ERR_PTR() if somethings fails. Let's  
> > propagate the error returned by panfrost_fence_create() instead of
> > returning NULL.
> > 
> > Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>  
> 
> In your previous posting[1] you also handled the case where
> job->base.s_fence->finished.error is non-zero. Is there a good reason to
> drop that?

[2] has been applied in the meantime: returning NULL now preserves
the finished.error field.

> 
> [1] https://patchwork.kernel.org/patch/11267153/

[2]https://patchwork.kernel.org/patch/11218399/

> 
> But this change on its own stands, so:
> 
> Reviewed-by: Steven Price <steven.price@xxxxxxx>
> 
> > ---
> >  drivers/gpu/drm/panfrost/panfrost_job.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c
> > index b0716e49eeca..242147b36d8e 100644
> > --- a/drivers/gpu/drm/panfrost/panfrost_job.c
> > +++ b/drivers/gpu/drm/panfrost/panfrost_job.c
> > @@ -349,7 +349,7 @@ static struct dma_fence *panfrost_job_run(struct drm_sched_job *sched_job)
> >  
> >  	fence = panfrost_fence_create(pfdev, slot);
> >  	if (IS_ERR(fence))
> > -		return NULL;
> > +		return fence;
> >  
> >  	if (job->done_fence)
> >  		dma_fence_put(job->done_fence);
> >   
> 

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