[libata] Utilize new SCSI event infrastructure

An end to CD-ROM polling (if you have a device that supports AN)...
hooray!
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/ata/libata-scsi.c

@@ -841,6 +841,9 @@ static void ata_scsi_dev_config(struct scsi_device *sdev,
 		blk_queue_max_hw_segments(q, q->max_hw_segments - 1);
 	}
 
+	if (dev->flags & ATA_DFLAG_AN)
+		set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events);
+
 	if (dev->flags & ATA_DFLAG_NCQ) {
 		int depth;
 
@@ -3296,10 +3299,9 @@ static void ata_scsi_handle_link_detach(struct ata_link *link)
  */
 void ata_scsi_media_change_notify(struct ata_device *dev)
 {
-#ifdef OTHER_AN_PATCHES_HAVE_BEEN_APPLIED
 	if (dev->sdev)
-		scsi_device_event_notify(dev->sdev, SDEV_MEDIA_CHANGE);
-#endif
+		sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE,
+				     GFP_ATOMIC);
 }
 
 /**