USB_EP_FIFO_FLUSH(9) Kernel Mode Gadget API USB_EP_FIFO_FLUSH(9)NAME
usb_ep_fifo_flush - flushes contents of a fifo
void usb_ep_fifo_flush(struct usb_ep * ep);
the endpoint whose fifo is being flushed.
This call may be used to flush the "unclaimed data" that may exist in an endpoint fifo after abnormal transaction terminations. The call
must never be used except when endpoint is not being used for any protocol translation.
David Brownell <firstname.lastname@example.org>
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 USB_EP_FIFO_FLUSH(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 <email@example.com>
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 USB_EP_ENABLE(9)
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