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drm/nouveau: Take fence spinlock in nouveau_fence_channel_fini().
author
Francisco Jerez
<currojerez@riseup.net>
Mon, 18 Oct 2010 01:57:19 +0000
(
03:57
+0200)
committer
Ben Skeggs
<bskeggs@redhat.com>
Fri, 3 Dec 2010 05:06:47 +0000
(15:06 +1000)
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>
drivers/gpu/drm/nouveau/nouveau_fence.c
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diff --git
a/drivers/gpu/drm/nouveau/nouveau_fence.c
b/drivers/gpu/drm/nouveau/nouveau_fence.c
index
29fe03b
..
f70bec8
100644
(file)
--- a/
drivers/gpu/drm/nouveau/nouveau_fence.c
+++ b/
drivers/gpu/drm/nouveau/nouveau_fence.c
@@
-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