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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

SYNOPSIS
       int usb_ep_enable(struct usb_ep * ep,
			 const struct usb_endpoint_descriptor * desc);

ARGUMENTS
       ep
	   the endpoint being configured. may not be the endpoint named “ep0”.
	   drivers discover endpoints through the ep_list of a usb_gadget.

       desc
	   descriptor for desired behavior. caller guarantees this pointer
	   remains valid until the endpoint is disabled; the data byte order
	   is little-endian (usb-standard).

DESCRIPTION
       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.

AUTHOR
       David Brownell <dbrownell@users.sourceforge.net>
	   Author.

COPYRIGHT
Kernel Hackers Manual 2.6.	 November 2013		      USB_EP_ENABLE(9)

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