This is a note to let you know that I've just added the patch titled

dma-fence: Clear fence->status during dma_fence_init()

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: dma-fence-clear-fence-status-during-dma_fence_init.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 83dd1376fd92f33bdeca9e83d479534a4e7f870b Mon Sep 17 00:00:00 2001

From: Chris Wilson chris@chris-wilson.co.uk Date: Wed, 4 Jan 2017 14:12:20 +0000 Subject: dma-fence: Clear fence->status during dma_fence_init()

From: Chris Wilson chris@chris-wilson.co.uk

commit 83dd1376fd92f33bdeca9e83d479534a4e7f870b upstream.

As the fence->status is an optional field that may be set before dma_fence_signal() is called to convey that the fence completed with an error, we have to ensure that it is always set to zero on initialisation so that the typical use (i.e. unset) always flags a successful completion.

Signed-off-by: Chris Wilson chris@chris-wilson.co.uk Reviewed-by: Tvrtko Ursulin tvrtko.ursulin@intel.com Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch Reviewed-by: Sumit Semwal sumit.semwal@linaro.org Signed-off-by: Sumit Semwal sumit.semwal@linaro.org Link: http://patchwork.freedesktop.org/patch/msgid/20170104141222.6992-1-chris@chr... [s/dma_fence/fence/g - gregkh] Cc: Jisheng Zhang Jisheng.Zhang@synaptics.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/dma-buf/fence.c | 1 + 1 file changed, 1 insertion(+)

--- a/drivers/dma-buf/fence.c +++ b/drivers/dma-buf/fence.c @@ -526,6 +526,7 @@ fence_init(struct fence *fence, const st fence->context = context; fence->seqno = seqno; fence->flags = 0UL; + fence->status = 0;

trace_fence_init(fence); }

Patches currently in stable-queue which might be from chris@chris-wilson.co.uk are

queue-4.9/dma-buf-sw-sync-fix-the-is-signaled-test-to-handle-u32-wraparound.patch queue-4.9/dma-fence-clear-fence-status-during-dma_fence_init.patch queue-4.9/dma-buf-sw-sync-fix-locking-around-sync_timeline-lists.patch queue-4.9/dma-fence-wrap-querying-the-fence-status.patch queue-4.9/dma-buf-sw_sync-clean-up-list-before-signaling-the-fence.patch queue-4.9/dma-buf-sw-sync-reduce-irqsave-irqrestore-from-known-context.patch queue-4.9/dma-buf-sw_sync-move-timeline_fence_ops-around.patch queue-4.9/dma-buf-sw-sync-prevent-user-overflow-on-timeline-advance.patch queue-4.9/dma-fence-introduce-drm_fence_set_error-helper.patch queue-4.9/dma-buf-sw_sync-force-signal-all-unsignaled-fences-on-dying-timeline.patch queue-4.9/dma-buf-sw-sync-use-an-rbtree-to-sort-fences-in-the-timeline.patch queue-4.9/dma-buf-sw-sync-sync_pt-is-private-and-of-fixed-size.patch queue-4.9/dma-buf-dma-fence-extract-__dma_fence_is_later.patch