| DMA_BUF_ATTACH(9) | Device drivers infrastructure | DMA_BUF_ATTACH(9) |
NAME¶
dma_buf_attach - Add the device to dma_buf's attachments list; optionally, calls attach of dma_buf_ops to allow device-specific attach functionality
SYNOPSIS¶
struct dma_buf_attachment * dma_buf_attach(struct dma_buf * dmabuf, struct device * dev);
ARGUMENTS¶
dmabuf
[in] buffer to attach device to.
dev
[in] device to be attached.
DESCRIPTION¶
Returns struct dma_buf_attachment pointer for this attachment. Attachments must be cleaned up by calling dma_buf_detach.
RETURNS¶
A pointer to newly created dma_buf_attachment on success, or a negative error code wrapped into a pointer on failure.
Note that this can fail if the backing storage of dmabuf is in a place not accessible to dev, and cannot be moved to a more suitable place. This is indicated with the error code -EBUSY.
COPYRIGHT¶
| June 2023 | Kernel Hackers Manual 3.10 |