table of contents
| USB_BUFFER_UNMAP_SG(9) | USB Core APIs | USB_BUFFER_UNMAP_SG(9) |
NAME¶
usb_buffer_unmap_sg - free DMA mapping(s) for a scatterlist
SYNOPSIS¶
void usb_buffer_unmap_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 unmap
n_hw_ents
the positive return value from usb_buffer_map_sg
DESCRIPTION¶
Reverses the effect of usb_buffer_map_sg.
COPYRIGHT¶
| May 2024 | Kernel Hackers Manual 2.6. |