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dma-buf: cleanup dma_fence_chain_walk

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Use unrcu_pointer() instead of the manual cast.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220518085446.31338-1-christian.koenig@amd.com
This commit is contained in:
Christian König 2022-05-11 17:40:38 +02:00
parent ade1fc91eb
commit 14374e3eee
1 changed files with 2 additions and 2 deletions
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4
drivers/dma-buf/dma-fence-chain.c
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@ -62,8 +62,8 @@ struct dma_fence *dma_fence_chain_walk(struct dma_fence *fence)
replacement = NULL;
}
tmp = cmpxchg((struct dma_fence __force **)&chain->prev,
prev, replacement);
tmp = unrcu_pointer(cmpxchg(&chain->prev, RCU_INITIALIZER(prev),
RCU_INITIALIZER(replacement)));
if (tmp == prev)
dma_fence_put(tmp);
else