[PATCH] SCSI not showing tray status correctly

[PATCH] SCSI not showing tray status correctly

[David Martin]

When trying to get the drive status via ioctl CDROM_DRIVE_STATUS, with no disk 
it gives CDS_TRAY_OPEN even if the tray is closed.

ioctl works as expected with ide-cd driver. Here is the patch to get the same 
behaviour on SCSI drives for kernel 2.6.10. 2.4 branch have same problem.



--- linux-2.6.10-orig/drivers/scsi/sr_ioctl.c        2004-12-27 
04:47:22.000000000 +0100
+++ linux-2.6.10/drivers/scsi/sr_ioctl.c     2004-12-27 05:54:08.000000000 
+0100
@@ -216,14 +216,20 @@

 int sr_drive_status(struct cdrom_device_info *cdi, int slot)
 {
+       struct media_event_desc med;
+
        if (CDSL_CURRENT != slot) {
                /* we have no changer support */
                return -EINVAL;
        }
+
        if (0 == test_unit_ready(cdi->handle))
                return CDS_DISC_OK;

-       return CDS_TRAY_OPEN;
+       if (!cdrom_get_media_event(cdi, &med) && med.door_open)
+               return CDS_TRAY_OPEN;
+
+       return CDS_NO_DISC;
 }

 int sr_disk_status(struct cdrom_device_info *cdi)