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authorGustavo Padovan <gustavo.padovan@collabora.co.uk>2016-08-05 10:39:34 -0300
committerSumit Semwal <sumit.semwal@linaro.org>2016-08-11 15:33:23 +0530
commite1aaf311dbe82221910cc0e0809c988de210cc3c (patch)
tree942432e8bdf1eed9f9cdaca00711604f571c9d8f
parent9622c38f1cbab00aa2f52715ec950c5c5f838aa5 (diff)
dma-buf/fence-array: add fence_is_array()
Add helper to check if fence is array. v2: Comments from Chris Wilson - remove ternary if from ops comparison - add EXPORT_SYMBOL(fence_array_ops) 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> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
-rw-r--r--drivers/dma-buf/fence-array.c1
-rw-r--r--include/linux/fence-array.h10
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/dma-buf/fence-array.c b/drivers/dma-buf/fence-array.c
index a8731c8..ee50022 100644
--- a/drivers/dma-buf/fence-array.c
+++ b/drivers/dma-buf/fence-array.c
@@ -99,6 +99,7 @@ const struct fence_ops fence_array_ops = {
.wait = fence_default_wait,
.release = fence_array_release,
};
+EXPORT_SYMBOL(fence_array_ops);
/**
* fence_array_create - Create a custom fence array
diff --git a/include/linux/fence-array.h b/include/linux/fence-array.h
index 86baaa4..a44794e 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;
+}
+
+/**
* to_fence_array - cast a fence to a fence_array
* @fence: fence to cast to a fence_array
*