[PATCH 6/9] drm/qxl: stop using ttm_bo_wait

[Dave Airlie]

Acked-by: Dave Airlie <airlied at redhat.com>

On Fri, 16 Dec 2022 at 00:20, Christian König
<ckoenig.leichtzumerken at gmail.com> wrote:
>
> Am 25.11.22 um 11:21 schrieb Christian König:
> > TTM is just wrapping core DMA functionality here, remove the mid-layer.
> > No functional change.
>
> Any objections to this guys?
>
> I'm basically just following a suggestion from Daniel here and it
> already triggered a discussion about the timeout for i915.
>
> Thanks,
> Christian.
>
> >
> > Signed-off-by: Christian König <christian.koenig at amd.com>
> > ---
> >   drivers/gpu/drm/qxl/qxl_cmd.c | 16 ++++++++++++++--
> >   1 file changed, 14 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c
> > index 63aa96a69752..281edab518cd 100644
> > --- a/drivers/gpu/drm/qxl/qxl_cmd.c
> > +++ b/drivers/gpu/drm/qxl/qxl_cmd.c
> > @@ -579,7 +579,7 @@ void qxl_surface_evict(struct qxl_device *qdev, struct qxl_bo *surf, bool do_upd
> >
> >   static int qxl_reap_surf(struct qxl_device *qdev, struct qxl_bo *surf, bool stall)
> >   {
> > -     int ret;
> > +     long ret;
> >
> >       ret = qxl_bo_reserve(surf);
> >       if (ret)
> > @@ -588,7 +588,19 @@ static int qxl_reap_surf(struct qxl_device *qdev, struct qxl_bo *surf, bool stal
> >       if (stall)
> >               mutex_unlock(&qdev->surf_evict_mutex);
> >
> > -     ret = ttm_bo_wait(&surf->tbo, true, !stall);
> > +     if (stall) {
> > +             ret = dma_resv_wait_timeout(surf->tbo.base.resv,
> > +                                         DMA_RESV_USAGE_BOOKKEEP, true,
> > +                                         15 * HZ);
> > +             if (ret > 0)
> > +                     ret = 0;
> > +             else if (ret == 0)
> > +                     ret = -EBUSY;
> > +     } else {
> > +             ret = dma_resv_test_signaled(surf->tbo.base.resv,
> > +                                          DMA_RESV_USAGE_BOOKKEEP);
> > +             ret = ret ? -EBUSY : 0;
> > +     }
> >
> >       if (stall)
> >               mutex_lock(&qdev->surf_evict_mutex);
>