D46859.diff
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	Index: sys/dev/xen/control/control.c
	===================================================================
	--- sys/dev/xen/control/control.c
	+++ sys/dev/xen/control/control.c
	@@ -394,6 +394,21 @@
	}

	/------------------ Private Device Attachment Functions --------------------/
	+
	+static void
	+notify_support(void)
	+{
	+
	+ /*
	+ * Notify kernel is ready to handle "control/shutdown" events. Ignore
	+ * errors if the nodes haven't been created by the toolstack, as the
	+ * parent "control" directory should be read-only for the guest.
	+ */
	+ xs_write(XST_NIL, "control", "feature-poweroff", "1");
	+ xs_write(XST_NIL, "control", "feature-reboot", "1");
	+ xs_write(XST_NIL, "control", "feature-suspend", "1");
	+}
	+
	/**
	* \brief Identify instances of this device type in the system.
	*
	@@ -455,6 +470,8 @@
	EVENTHANDLER_REGISTER(shutdown_final, xctrl_shutdown_final, NULL,
	SHUTDOWN_PRI_LAST);

	+ notify_support();
	+
	return (0);
	}

	@@ -479,6 +496,16 @@
	return (0);
	}

	+static int
	+xctrl_resume(device_t dev)
	+{
	+
	+ notify_support();
	+
	+ return (0);
	+}
	+
	+
	/-------------------- Private Device Attachment Data -----------------------/
	static device_method_t xctrl_methods[] = {
	/* Device interface */
	@@ -486,6 +513,7 @@
	DEVMETHOD(device_probe, xctrl_probe),
	DEVMETHOD(device_attach, xctrl_attach),
	DEVMETHOD(device_detach, xctrl_detach),
	+ DEVMETHOD(device_resume, xctrl_resume),

	DEVMETHOD_END
	};