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drm/nouveau: Take fence spinlock in nouveau_fence_channel_fini().

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Without it there's a potential race with nouveau_fence_update().

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Francisco Jerez 2010-10-18 03:57:19 +02:00 committed by Ben Skeggs
parent 2b478addc0
commit 889fa93dc0
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/nouveau/nouveau_fence.c
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@ -490,6 +490,8 @@ nouveau_fence_channel_fini(struct nouveau_channel *chan)
{
struct nouveau_fence *tmp, *fence;
spin_lock(&chan->fence.lock);
list_for_each_entry_safe(fence, tmp, &chan->fence.pending, entry) {
fence->signalled = true;
list_del(&fence->entry);
@ -499,6 +501,8 @@ nouveau_fence_channel_fini(struct nouveau_channel *chan)
kref_put(&fence->refcount, nouveau_fence_del);
}
spin_unlock(&chan->fence.lock);
}
int