struct_usb_sg_request9
Support for scatter/gather i/o
Usage
struct usb_sg_request {
int status;
size_t bytes;
};
Members
status
zero indicates success, else negative errno
bytes
counts bytes transferred.
Overview
These requests are initialized using usb_sg_init, and then are used as request handles passed to usb_sg_wait or usb_sg_cancel. Most members of the request object aren't for driver access.
The status and bytecount values are valid only after usb_sg_wait returns. If the status is zero, then the bytecount matches the total from the request.
After an error completion, drivers may need to clear a halt condition on the endpoint.
Releases
6 releases since Debian 4.0 (Etch); the text changed 5 times.