Name
usb_buffer_dmasync_sg —
synchronize DMA and CPU view of scatterlist buffer(s)
Synopsis
void usb_buffer_dmasync_sg ( | struct usb_device * | dev, |
| | unsigned | pipe, |
| | struct scatterlist * | sg, |
| | int | n_hw_ents); |
Arguments
dev
device to which the scatterlist will be mapped
pipe
endpoint defining the mapping direction
sg
the scatterlist to synchronize
n_hw_ents
the positive return value from usb_buffer_map_sg
Description
Use this when you are re-using a scatterlist's data buffers for
another USB request.