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Subject[PATCH 1/2] dma-buf/fence-array: add fence_is_array()
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From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

Add helper to check if fence is array.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
---
include/linux/fence-array.h | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/include/linux/fence-array.h b/include/linux/fence-array.h
index 86baaa4..d2e9f40 100644
--- a/include/linux/fence-array.h
+++ b/include/linux/fence-array.h
@@ -52,6 +52,16 @@ struct fence_array {
extern const struct fence_ops fence_array_ops;

/**
+ * fence_is_array - check if a fence is from the array subsclass
+ *
+ * Return true if it is a fence_array and false otherwise.
+ */
+static inline bool fence_is_array(struct fence *fence)
+{
+ return (fence->ops == &fence_array_ops) ? true : false;
+}
+
+/**
* to_fence_array - cast a fence to a fence_array
* @fence: fence to cast to a fence_array
*
--
2.5.5
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