usb_ep_fifo_status man page on Scientific

usb_ep_fifo_status man page on Scientific

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USB_EP_FIFO_STATUS(9)	    Kernel Mode Gadget API	 USB_EP_FIFO_STATUS(9)

NAME
       usb_ep_fifo_status - returns number of bytes in fifo, or error

SYNOPSIS
       int usb_ep_fifo_status(struct usb_ep * ep);

ARGUMENTS
       ep
	   the endpoint whose fifo status is being checked.

DESCRIPTION
       FIFO endpoints may have “unclaimed data” in them in certain cases, such
       as after aborted transfers. Hosts may not have collected all the IN
       data written by the gadget driver (and reported by a request
       completion). The gadget driver may not have collected all the data
       written OUT to it by the host. Drivers that need precise handling for
       fault reporting or recovery may need to use this call.

       This returns the number of such bytes in the fifo, or a negative errno
       if the endpoint doesn´t use a FIFO or doesn´t support such precise
       handling.

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

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

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