Inside dma-fence-chain, we use a cmpxchg on an RCU-protected pointer. To
avoid the sparse warning for using the RCU pointer directly, we have to
cast away the __rcu annotation. However, we don't need to use void*
everywhere and can stick to the dma_fence*.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuopp...@linux.intel.com>
---
drivers/dma-buf/dma-fence-chain.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/dma-buf/dma-fence-chain.c
b/drivers/dma-buf/dma-fence-chain.c
index 44a741677d25..3d123502ff12 100644
--- a/drivers/dma-buf/dma-fence-chain.c
+++ b/drivers/dma-buf/dma-fence-chain.c
@@ -62,7 +62,8 @@ struct dma_fence *dma_fence_chain_walk(struct dma_fence
*fence)
replacement = NULL;
}
- tmp = cmpxchg((void **)&chain->prev, (void *)prev, (void
*)replacement);
+ tmp = cmpxchg((struct dma_fence __force **)&chain->prev,
+ prev, replacement);
if (tmp == prev)
dma_fence_put(tmp);
else
--
2.20.1
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