USB_FREE_STREAMS(9) Host Controller APIs USB_FREE_STREAMS(9)NAME
usb_free_streams - free bulk endpoint stream IDs.
void usb_free_streams(struct usb_interface * interface, struct usb_host_endpoint ** eps, unsigned int num_eps, gfp_t mem_flags);
alternate setting that includes all endpoints.
array of endpoints to remove streams from.
number of endpoints in the array.
flags hcd should use to allocate memory.
Reverts a group of bulk endpoints back to not using stream IDs. Can fail if we are given bad arguments, or HCD is broken.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 USB_FREE_STREAMS(9)
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USB_EP_ENABLE(9) Kernel Mode Gadget API USB_EP_ENABLE(9)NAME
usb_ep_enable - configure endpoint, making it usable
int usb_ep_enable(struct usb_ep * ep, const struct usb_endpoint_descriptor * desc);
the endpoint being configured. may not be the endpoint named "ep0". drivers discover endpoints through the ep_list of a usb_gadget.
descriptor for desired behavior. caller guarantees this pointer remains valid until the endpoint is disabled; the data byte order is
when configurations are set, or when interface settings change, the driver will enable or disable the relevant endpoints. while it is
enabled, an endpoint may be used for i/o until the driver receives a disconnect from the host or until the endpoint is disabled.
the ep0 implementation (which calls this routine) must ensure that the hardware capabilities of each endpoint match the descriptor provided
for it. for example, an endpoint named "ep2in-bulk" would be usable for interrupt transfers as well as bulk, but it likely couldn't be used
for iso transfers or for endpoint 14. some endpoints are fully configurable, with more generic names like "ep-a". (remember that for USB,
"in" means "towards the USB master".)
returns zero, or a negative error code.
David Brownell <firstname.lastname@example.org>
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 USB_EP_ENABLE(9)
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