[SCSI] sr: fix test unit ready responses

Commit 210ba1d1724f5c4ed87a2ab1a21ca861a915f734 updated sr.c to use
the scsi_test_unit_ready() function.  Unfortunately, this has the
wrong characteristic of eating NOT_READY returns which sr.c relies on
for tray status.

Fix by rolling an internal sr_test_unit_ready() that doesn't do this.

Tested-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c
index d5cebff1d646..ae87d08df588 100644
--- a/drivers/scsi/sr_ioctl.c
+++ b/drivers/scsi/sr_ioctl.c
@@ -306,8 +306,7 @@ int sr_drive_status(struct cdrom_device_info *cdi, int slot)
                 /* we have no changer support */
                 return -EINVAL;
         }
-        if (0 == scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES,
-                                      &sshdr))
+        if (0 == sr_test_unit_ready(cd->device, &sshdr))
                 return CDS_DISC_OK;
 
         if (!cdrom_get_media_event(cdi, &med)) {