Author: Julia Lawall <julia@diku.dk> This code had calls to both usb_set_intfdata and dev_set_drvdata, doing the same thing. The semantic patch that lead to finding this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // @header@ @@ @same depends on header@ position p; @@ usb_set_intfdata@p(…) { … } @depends on header@ position _p!=same.p; identifier _f; struct usb_interface *intf; expression …