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dma-buf/fence-array: add fence_is_array()

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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>
This commit is contained in:
Gustavo Padovan 2016-08-05 10:39:34 -03:00 • committed by Sumit Semwal
parent 9622c38f1c
commit e1aaf311db
2 changed files with 11 additions and 0 deletions
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10
include/linux/fence-array.h
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@ -51,6 +51,16 @@ 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