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drm/nouveau: Fix copy-paste error in nouveau_fence_wait_uevent_handler 

[ Upstream commit 1eb013473bff5f95b6fe1ca4dd7deda47257b9c2 ]

Like other cases, it should use rcu protected 'chan' rather
than 'fence->channel' in nouveau_fence_wait_uevent_handler.

Fixes: 0ec5f02f0e ("drm/nouveau: prevent stale fence->channel pointers, and protect with rcu")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
YueHaibing 2020-01-10 14:32:01 +08:00 committed by Greg Kroah-Hartman
parent 93672fa5b9
commit a94c84c5c4
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/nouveau/nouveau_fence.c
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@ -156,7 +156,7 @@ nouveau_fence_wait_uevent_handler(struct nvif_notify *notify)
fence = list_entry(fctx->pending.next, typeof(*fence), head);
chan = rcu_dereference_protected(fence->channel, lockdep_is_held(&fctx->lock));
if (nouveau_fence_update(fence->channel, fctx))
if (nouveau_fence_update(chan, fctx))
ret = NVIF_NOTIFY_DROP;
}
spin_unlock_irqrestore(&fctx->lock, flags);