[SCSI] st: clean up device file creation and removal

This patch cleans up the st device file creation and removal.

Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-by: Kai Mäkisara <kai.makisara@kolumbus.fi>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/st.h b/drivers/scsi/st.h
index 8a23640..b7a07c7 100644
--- a/drivers/scsi/st.h
+++ b/drivers/scsi/st.h
@@ -67,6 +67,7 @@
 	short default_density;	/* Forced density, -1 = no value */
 	int default_blksize;	/* Forced blocksize, -1 = no value */
 	struct scsi_tape *tape;
+	struct device *devs[2];  /* Auto-rewind and non-rewind devices */
 	struct cdev *cdevs[2];  /* Auto-rewind and non-rewind devices */
 };