1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/scsi/sr.h b/drivers/scsi/sr.h
index d65de9621b27..81fbc0b78a52 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 */
@@ -37,6 +40,7 @@ typedef struct scsi_cd {
         unsigned xa_flag:1;     /* CD has XA sectors ? */
         unsigned readcd_known:1;        /* drive supports READ_CD (0xbe) */
         unsigned readcd_cdda:1; /* reading audio data using READ_CD */
+        unsigned previous_state:1;      /* media has changed */
         struct cdrom_device_info cdi;
         /* We hold gendisk and scsi_device references on probe and use
          * the refs on this kref to decide when to release them */