centos man page for usb_hcd_link_urb_to_ep

USB_HCD_LINK_URB_TO_(9) 				       Host Controller APIs					   USB_HCD_LINK_URB_TO_(9)

NAME
       usb_hcd_link_urb_to_ep - add an URB to its endpoint queue

SYNOPSIS
       int usb_hcd_link_urb_to_ep(struct usb_hcd * hcd, struct urb * urb);

ARGUMENTS
       hcd
	   host controller to which urb was submitted

       urb
	   URB being submitted

DESCRIPTION
       Host controller drivers should call this routine in their enqueue method. The HCD's private spinlock must be held and interrupts must be
       disabled. The actions carried out here are required for URB submission, as well as for endpoint shutdown and for usb_kill_urb.

RETURN
       0 for no error, otherwise a negative error code (in which case the enqueue method must fail). If no error occurs but enqueue fails anyway,
       it must call usb_hcd_unlink_urb_from_ep before releasing the private spinlock and returning.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   USB_HCD_LINK_URB_TO_(9)