diff --git a/drivers/scsi/sr.h b/drivers/scsi/sr.h
index 0d04e28..81fbc0b 100644
--- a/drivers/scsi/sr.h
+++ b/drivers/scsi/sr.h
@@ -20,6 +20,9 @@
 #include <linux/genhd.h>
 #include <linux/kref.h>
 
+#define MAX_RETRIES	3
+#define SR_TIMEOUT	(30 * HZ)
+
 struct scsi_device;
 
 /* The CDROM is fairly slow, so we need a little extra time */