diff options
author | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2021-10-12 12:03:58 -0400 |
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committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2021-10-12 12:03:58 -0400 |
commit | d9f673051ab54dd5263fef6da97ef08feedaa754 (patch) | |
tree | 6d7e19bd3345bd43e3488d17f6cb60ff16289b3d /drivers/dma-buf/dma-fence.c | |
parent | 814c8757115f9d7135126ac43d3a178b31e796dd (diff) | |
parent | 1176d15f0f6e556d54ced510ac4a91694960332b (diff) |
Merge drm/drm-next into drm-intel-next
Need to resync drm-intel-next with TTM and PXP stuff from
drm-intel-gt-next that is now in drm/drm-next.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/dma-buf/dma-fence.c')
-rw-r--r-- | drivers/dma-buf/dma-fence.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index ce0f5eff575d..1e82ecd443fa 100644 --- a/drivers/dma-buf/dma-fence.c +++ b/drivers/dma-buf/dma-fence.c @@ -616,20 +616,17 @@ EXPORT_SYMBOL(dma_fence_enable_sw_signaling); * @cb: the callback to register * @func: the function to call * + * Add a software callback to the fence. The caller should keep a reference to + * the fence. + * * @cb will be initialized by dma_fence_add_callback(), no initialization * by the caller is required. Any number of callbacks can be registered * to a fence, but a callback can only be registered to one fence at a time. * - * Note that the callback can be called from an atomic context. If - * fence is already signaled, this function will return -ENOENT (and + * If fence is already signaled, this function will return -ENOENT (and * *not* call the callback). * - * Add a software callback to the fence. Same restrictions apply to - * refcount as it does to dma_fence_wait(), however the caller doesn't need to - * keep a refcount to fence afterward dma_fence_add_callback() has returned: - * when software access is enabled, the creator of the fence is required to keep - * the fence alive until after it signals with dma_fence_signal(). The callback - * itself can be called from irq context. + * Note that the callback can be called from an atomic context or irq context. * * Returns 0 in case of success, -ENOENT if the fence is already signaled * and -EINVAL in case of error. |