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

[Steven Price]

On Wed, Feb 05, 2020 at 02:21:55PM +0000, Boris Brezillon wrote:
> On Wed, 5 Feb 2020 13:47:55 +0000
> Steven Price <steven.price at arm.com> 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 at collabora.com>  
> > 
> > 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.

Ah, I'd missed that - looks good.

Thanks,

Steve

> 
> > 
> > [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 at arm.com>
> > 
> > > ---
> > >  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);
> > >   
> > 
>