USB_BUFFER_DMASYNC_S(9) USB Core APIs USB_BUFFER_DMASYNC_S(9)NAMEusb_buffer_dmasync_sg - synchronize DMA and CPU view of scatterlist
buffer(s)SYNOPSIS
void usb_buffer_dmasync_sg(const struct usb_device * dev, int is_in,
struct scatterlist * sg, int n_hw_ents);
ARGUMENTS
dev
device to which the scatterlist will be mapped
is_in
mapping transfer 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.
COPYRIGHTKernel Hackers Manual 3.8. June 2014 USB_BUFFER_DMASYNC_S(9)