Commit 1a1a17cd authored Sep 18, 2009 by Jeremy Fitzhardinge

xen/evtchn: remove spurious barrier



evtchn_unbind_from_user() is called under a lock, so there's no need to
worry about the ordering of unbind_from_irqhandler vs clearing the port
per-user data.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

parent 0edce91d

drivers/xen/evtchn.c

+0 −3

Original line number	Diff line number	Diff line
		@@ -279,9 +279,6 @@ static void evtchn_unbind_from_user(struct per_user_data *u, int port)

		unbind_from_irqhandler(irq, (void *)(unsigned long)port);

		/* make sure we unbind the irq handler before clearing the port */
		barrier();

		set_port_user(port, NULL);
		}