From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu, 2 Nov 2017 20:03:34 +0000 (+0200)
Subject: dma-buf/fence: Sparse wants __rcu on the object itself
X-Git-Tag: v4.16-rc1~96^2~32^2~54
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=5f72db59160c697d1dec3f6074dba72bd834c695;p=linux.git

dma-buf/fence: Sparse wants __rcu on the object itself

In order to silence sparse in dma_fence_get_rcu_safe(), we need to mark
the incoming fence object as being RCU protected and not the pointer to
the object.

Cc: Dave Airlie <airlied@redhat.com>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: linaro-mm-sig@lists.linaro.org
Cc: linux-media@vger.kernel.org
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171102200336.23347-3-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
[vsyrjala: s/silent/silence/ in commit message]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---

diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h
index efdabbb64e3c..4c008170fe65 100644
--- a/include/linux/dma-fence.h
+++ b/include/linux/dma-fence.h
@@ -242,7 +242,7 @@ static inline struct dma_fence *dma_fence_get_rcu(struct dma_fence *fence)
  * The caller is required to hold the RCU read lock.
  */
 static inline struct dma_fence *
-dma_fence_get_rcu_safe(struct dma_fence * __rcu *fencep)
+dma_fence_get_rcu_safe(struct dma_fence __rcu **fencep)
 {
 	do {
 		struct dma_fence *fence;