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.