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 4.8.                 January 2017                   USB_HCD_LINK_URB_TO_(9)