From: Gustavo Padovan <gustavo.pado...@collabora.com>
Document return values for this function.
Signed-off-by: Gustavo Padovan <gustavo.pado...@collabora.com>
---
drivers/dma-buf/dma-fence.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c
index d1f1f45..809b397 100644
--- a/drivers/dma-buf/dma-fence.c
+++ b/drivers/dma-buf/dma-fence.c
@@ -239,6 +239,8 @@ EXPORT_SYMBOL(dma_fence_enable_sw_signaling);
* after it signals with dma_fence_signal. The callback itself can be called
* from irq context.
*
+ * Returns 0 in case of success, -ENOENT if the fence is already signaled
+ * and -EINVAL in case of error.
*/
int dma_fence_add_callback(struct dma_fence *fence, struct dma_fence_cb *cb,
dma_fence_func_t func)
--
2.9.3
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