PERFORCE change 170602 for review

[Alexander Motin]

http://p4web.freebsd.org/chv.cgi?CH=170602

Change 170602 by mav at mav_mavtest on 2009/11/13 22:38:16

	Do not enable tagged commands if controller does't support tags.

Affected files ...

.. //depot/projects/scottl-camlock/src/sys/cam/ata/ata_xpt.c#57 edit

Differences ...

==== //depot/projects/scottl-camlock/src/sys/cam/ata/ata_xpt.c#57 (text+ko) ====

@@ -719,7 +719,8 @@
 		/* XXX: If not all tags allowed, we must to tell SIM which are. */
 		if (path->device->mintags < path->bus->sim->max_tagged_dev_openings)
 			path->device->mintags = path->device->maxtags = 0;
-		if (path->device->mintags != 0) {
+		if (path->device->mintags != 0 &&
+		    path->bus->sim->max_tagged_dev_openings != 0) {
 			xpt_start_tags(path);
 		}
 		ata_device_transport(path);