diff options
| author | Maarten Lankhorst <maarten.lankhorst@canonical.com> | 2014-09-22 13:08:48 +0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2014-09-30 09:49:06 +0400 |
| commit | 1dadba87cba20989c5a5a56f2a86fe6672e37c30 (patch) | |
| tree | fcbf9c7ba8033e56585a4c8f977fe09a1a21ba36 /drivers/gpu/drm/nouveau/nv84_fence.c | |
| parent | d743ecf360637d489a3ba81a268f574359149601 (diff) | |
| download | linux-1dadba87cba20989c5a5a56f2a86fe6672e37c30.tar.xz | |
drm/nouveau: nv84+: fix fence context seqno's
This fixes a regression introduced by "drm/nouveau: rework to new fence interface"
(commit 29ba89b2371d466).
The fence sequence should not be reset after creation, the old value is used instead.
On destruction the final value is written, to prevent another source of accidental
wraparound in case of a channel being destroyed after a hang, and unblocking any other
channel that may wait on the about-to-be-deleted channel to signal.
I'm nothing if not optimistic about any hope of recovery from that. ;-)
Reported-by: Ted Percival <ted@tedp.id.au>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Tested-by: Ted Percival <ted@tedp.id.au>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv84_fence.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv84_fence.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nv84_fence.c b/drivers/gpu/drm/nouveau/nv84_fence.c index a2f28082c272..1e5017f905db 100644 --- a/drivers/gpu/drm/nouveau/nv84_fence.c +++ b/drivers/gpu/drm/nouveau/nv84_fence.c @@ -120,6 +120,7 @@ nv84_fence_context_del(struct nouveau_channel *chan) nouveau_bo_vma_del(bo, &fctx->dispc_vma[i]); } + nouveau_bo_wr32(priv->bo, chan->chid * 16 / 4, fctx->base.sequence); nouveau_bo_vma_del(priv->bo, &fctx->vma_gart); nouveau_bo_vma_del(priv->bo, &fctx->vma); nouveau_fence_context_del(&fctx->base); @@ -159,8 +160,6 @@ nv84_fence_context_new(struct nouveau_channel *chan) ret = nouveau_bo_vma_add(bo, cli->vm, &fctx->dispc_vma[i]); } - nouveau_bo_wr32(priv->bo, chan->chid * 16/4, 0x00000000); - if (ret) nv84_fence_context_del(chan); return ret; |