Re: [PATCH] drm/radeon: Handle workqueue allocation failure

From: Will Deacon
Date: Fri Oct 25 2019 - 12:18:13 EST


On Fri, Oct 25, 2019 at 06:06:26PM +0200, Michel Dänzer wrote:
> On 2019-10-25 1:04 p.m., Will Deacon wrote:
> > In the highly unlikely event that we fail to allocate the "radeon-crtc"
> > workqueue, we should bail cleanly rather than blindly march on with a
> > NULL pointer installed for the 'flip_queue' field of the 'radeon_crtc'
> > structure.
> >
> > This was reported previously by Nicolas, but I don't think his fix was
> > correct:
>
> Neither is this one I'm afraid. See my feedback on
> https://patchwork.freedesktop.org/patch/331534/ .

Thanks. Although I agree with you wrt the original patch, I don't think
the workqueue allocation failure is distinguishable from the CRTC allocation
failure with my patch. Are you saying that the error path there is broken
too?

Will