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authorChris Wilson <chris@chris-wilson.co.uk>2017-06-29 13:59:25 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-12-09 22:01:55 +0100
commitfc839ecb8edae9ec6fc757e6874f14ffecda7b3d (patch)
tree6bd47a55342fc1d182ccd4e038e5e8ed8a684d34
parentb53525eaac5590d06785f5fbdd8265b73ecbc911 (diff)
dma-buf/sw-sync: Fix the is-signaled test to handle u32 wraparound
commit 61894b02716f122dd7662d5d89f5b2245ca551e2 upstream. Use the canonical __dma_fence_is_later() to compare the fence seqno against the timeline seqno to check if the fence is signaled. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Sean Paul <seanpaul@chromium.org> Cc: Gustavo Padovan <gustavo@padovan.org> Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170629125930.821-2-chris@chris-wilson.co.uk [s/dma_fence/fence/g - gregkh] Cc: Jisheng Zhang <Jisheng.Zhang@synaptics.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/dma-buf/sw_sync.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
index 62e8e6dc7953..77ede2a0fd5a 100644
--- a/drivers/dma-buf/sw_sync.c
+++ b/drivers/dma-buf/sw_sync.c
@@ -219,7 +219,7 @@ static bool timeline_fence_signaled(struct fence *fence)
{
struct sync_timeline *parent = fence_parent(fence);
- return (fence->seqno > parent->value) ? false : true;
+ return !__fence_is_later(fence->seqno, parent->value);
}
static bool timeline_fence_enable_signaling(struct fence *fence)