diff --git a/drivers/scsi/sr.h b/drivers/scsi/sr.h
index 5334e98..1d1f6f41 100644
--- a/drivers/scsi/sr.h
+++ b/drivers/scsi/sr.h
@@ -36,6 +36,7 @@
 	struct scsi_device *device;
 	unsigned int vendor;	/* vendor code, see sr_vendor.c         */
 	unsigned long ms_offset;	/* for reading multisession-CD's        */
+	unsigned writeable : 1;
 	unsigned use:1;		/* is this device still supportable     */
 	unsigned xa_flag:1;	/* CD has XA sectors ? */
 	unsigned readcd_known:1;	/* drive supports READ_CD (0xbe) */