| USB_FIND_COMMON_ENDP(9) | USB Core APIs | USB_FIND_COMMON_ENDP(9) |
NAME¶
usb_find_common_endpoints_reverse - - look up common endpoint descriptors
SYNOPSIS¶
int usb_find_common_endpoints_reverse(struct usb_host_interface * alt, struct usb_endpoint_descriptor ** bulk_in, struct usb_endpoint_descriptor ** bulk_out, struct usb_endpoint_descriptor ** int_in, struct usb_endpoint_descriptor ** int_out);
ARGUMENTS¶
alt
alternate setting to search
bulk_in
pointer to descriptor pointer, or NULL
bulk_out
pointer to descriptor pointer, or NULL
int_in
pointer to descriptor pointer, or NULL
int_out
pointer to descriptor pointer, or NULL
DESCRIPTION¶
Search the alternate setting's endpoint descriptors for the last bulk-in, bulk-out, interrupt-in and interrupt-out endpoints and return them in the provided pointers (unless they are NULL).
If a requested endpoint is not found, the corresponding pointer is set to NULL.
RETURN¶
Zero if all requested descriptors were found, or -ENXIO otherwise.
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |