commit d88b1819dd6c6ba4b2270c98bf52ce67a315066d
author Luiz Capitulino <lcapitulino@redhat.com> Fri Feb 17 11:05:21 2012 -0200
committer Luiz Capitulino <lcapitulino@redhat.com> Wed Feb 22 17:23:21 2012 -0200
tree b5afd9cd7c853c7d75ab0dc76c8273c823007e33
parent f36f394952bd6703ca3ad8d649b41a9edd02db0c

block: Don't call bdrv_eject() if the tray state didn't change

It's not needed. Besides we can then assume that bdrv_eject() is
only called when there's a tray state change, which is useful to
the DEVICE_TRAY_MOVED event (going to be added in a future
commit).

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>

hw/ide/atapi.c

diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c
index 0adb27b..5919cf5 100644
--- a/hw/ide/atapi.c
+++ b/hw/ide/atapi.c
@@ -883,8 +883,11 @@
             ide_atapi_cmd_error(s, sense, ASC_MEDIA_REMOVAL_PREVENTED);
             return;
         }
-        bdrv_eject(s->bs, !start);
-        s->tray_open = !start;
+
+        if (s->tray_open != !start) {
+            bdrv_eject(s->bs, !start);
+            s->tray_open = !start;
+        }
     }
 
     ide_atapi_cmd_ok(s);

hw/scsi-disk.c

diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index a5d2fd1..091ecdc 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -1050,8 +1050,11 @@
                                  : SENSE_CODE(NOT_READY_REMOVAL_PREVENTED));
             return -1;
         }
-        bdrv_eject(s->qdev.conf.bs, !start);
-        s->tray_open = !start;
+
+        if (s->tray_open != !start) {
+            bdrv_eject(s->qdev.conf.bs, !start);
+            s->tray_open = !start;
+        }
     }
     return 0;
 }