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| author | Gustavo Padovan <gustavo.padovan@collabora.com> | 2017-02-15 18:57:25 +0100 |
|---|---|---|
| committer | Sumit Semwal <sumit.semwal@linaro.org> | 2017-02-16 05:28:02 +0100 |
| commit | f642de16c86e9f31d084aa98a50d3a2c923450c2 (patch) | |
| tree | 31a2b54cd28ed5c538edd1ecd11ac0e016e515d5 /drivers/dma-buf/dma-fence.c | |
| parent | drm/vc4: Drop debug print at boot with DPI enabled. (diff) | |
| download | linux-f642de16c86e9f31d084aa98a50d3a2c923450c2.tar.xz linux-f642de16c86e9f31d084aa98a50d3a2c923450c2.zip | |
dma-buf/dma-fence: improve doc for dma_fence_add_callback()
Document return values for this function.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170215175725.6692-1-gustavo@padovan.org
Diffstat (limited to 'drivers/dma-buf/dma-fence.c')
| -rw-r--r-- | drivers/dma-buf/dma-fence.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index d1f1f456f5c4..809b397e915f 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) |