1USB_EP_ENABLE(9)            Kernel Mode Gadget API            USB_EP_ENABLE(9)
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NAME

6       usb_ep_enable - configure endpoint, making it usable
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SYNOPSIS

9       int usb_ep_enable(struct usb_ep * ep,
10                         const struct usb_endpoint_descriptor * desc);
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ARGUMENTS

13       ep
14           the endpoint being configured. may not be the endpoint named “ep0”.
15           drivers discover endpoints through the ep_list of a usb_gadget.
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17       desc
18           descriptor for desired behavior. caller guarantees this pointer
19           remains valid until the endpoint is disabled; the data byte order
20           is little-endian (usb-standard).
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DESCRIPTION

23       when configurations are set, or when interface settings change, the
24       driver will enable or disable the relevant endpoints. while it is
25       enabled, an endpoint may be used for i/o until the driver receives a
26       disconnect from the host or until the endpoint is disabled.
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28       the ep0 implementation (which calls this routine) must ensure that the
29       hardware capabilities of each endpoint match the descriptor provided
30       for it. for example, an endpoint named “ep2in-bulk” would be usable for
31       interrupt transfers as well as bulk, but it likely couldn´t be used for
32       iso transfers or for endpoint 14. some endpoints are fully
33       configurable, with more generic names like “ep-a”. (remember that for
34       USB, “in” means “towards the USB master”.)
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36       returns zero, or a negative error code.
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AUTHOR

39       David Brownell <dbrownell@users.sourceforge.net>
40           Author.
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43Kernel Hackers Manual 2.6.         June 2019                  USB_EP_ENABLE(9)
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