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Date: Thu, 22 Jun 2017 09:22:49 +0200 From: Boris Brezillon <boris.brezillon@...e-electrons.com> To: Eric Anholt <eric@...olt.net> Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 2/4] drm/vc4: Wait for fences interruptibly in blocking mode. On Wed, 21 Jun 2017 11:50:00 -0700 Eric Anholt <eric@...olt.net> wrote: > We should allow SIGIO and things to interrupt us before we get to the > no-error stage of the commit process. This code is effectively copied > from drm_atomic_helper_commit(). > > Signed-off-by: Eric Anholt <eric@...olt.net> Reviewed-by: Boris Brezillon <boris.brezillon@...e-electrons.com> > --- > drivers/gpu/drm/vc4/vc4_kms.c | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c > index bc6ecdc6f104..6b1ccea76243 100644 > --- a/drivers/gpu/drm/vc4/vc4_kms.c > +++ b/drivers/gpu/drm/vc4/vc4_kms.c > @@ -142,6 +142,16 @@ static int vc4_atomic_commit(struct drm_device *dev, > return ret; > } > > + if (!nonblock) { > + ret = drm_atomic_helper_wait_for_fences(dev, state, true); > + if (ret) { > + drm_atomic_helper_cleanup_planes(dev, state); > + kfree(c); > + up(&vc4->async_modeset); > + return ret; > + } > + } > + > for_each_plane_in_state(state, plane, new_state, i) { > if ((plane->state->fb != new_state->fb) && new_state->fb) { > struct drm_gem_cma_object *cma_bo =
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