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Subject: media: videobuf2: Add missing doc comment for waiting_in_dqbuf Author: Andrzej Pietrasiewicz <[email protected]> Date: Mon Feb 12 20:12:03 2024 +0100 While at it rearrange other comments to match the order of struct members. Fixes: d65842f7126a ("media: vb2: add waiting_in_dqbuf flag") Signed-off-by: Andrzej Pietrasiewicz <[email protected]> Acked-by: Tomasz Figa <[email protected]> Signed-off-by: Hans Verkuil <[email protected]> include/media/videobuf2-core.h | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) --- diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index d9c6b5d4e990..8b86996b2719 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -72,6 +72,10 @@ struct vb2_buffer; * argument to other ops in this structure. * @put_userptr: inform the allocator that a USERPTR buffer will no longer * be used. + * @prepare: called every time the buffer is passed from userspace to the + * driver, useful for cache synchronisation, optional. + * @finish: called every time the buffer is passed back from the driver + * to the userspace, also optional. * @attach_dmabuf: attach a shared &struct dma_buf for a hardware operation; * used for DMABUF memory types; dev is the alloc device * dbuf is the shared dma_buf; returns ERR_PTR() on failure; @@ -86,10 +90,6 @@ struct vb2_buffer; * dmabuf. * @unmap_dmabuf: releases access control to the dmabuf - allocator is notified * that this driver is done using the dmabuf for now. - * @prepare: called every time the buffer is passed from userspace to the - * driver, useful for cache synchronisation, optional. - * @finish: called every time the buffer is passed back from the driver - * to the userspace, also optional. * @vaddr: return a kernel virtual address to a given memory buffer * associated with the passed private structure or NULL if no * such mapping exists. @@ -484,7 +484,6 @@ struct vb2_buf_ops { * caller. For example, for V4L2, it should match * the types defined on &enum v4l2_buf_type. * @io_modes: supported io methods (see &enum vb2_io_modes). - * @alloc_devs: &struct device memory type/allocator-specific per-plane device * @dev: device to use for the default allocation context if the driver * doesn't fill in the @alloc_devs array. * @dma_attrs: DMA attributes to use for the DMA. @@ -553,6 +552,7 @@ struct vb2_buf_ops { * VIDIOC_REQBUFS will ensure at least @min_queued_buffers * buffers will be allocated. Note that VIDIOC_CREATE_BUFS will not * modify the requested buffer count. + * @alloc_devs: &struct device memory type/allocator-specific per-plane device */ /* * Private elements (won't appear at the uAPI book): @@ -577,6 +577,9 @@ struct vb2_buf_ops { * @waiting_for_buffers: used in poll() to check if vb2 is still waiting for * buffers. Only set for capture queues if qbuf has not yet been * called since poll() needs to return %EPOLLERR in that situation. + * @waiting_in_dqbuf: set by the core for the duration of a blocking DQBUF, when + * it has to wait for a buffer to become available with vb2_queue->lock + * released. Used to prevent destroying the queue by other threads. * @is_multiplanar: set if buffer type is multiplanar * @is_output: set if buffer type is output * @copy_timestamp: set if vb2-core should set timestamps
