scsi: devirtualize unrealize of SCSI devices

All implementations are the same.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/scsi/scsi-bus.c

@@ -51,14 +51,6 @@ static void scsi_device_realize(SCSIDevice *s, Error **errp)
     }
 }
 
-static void scsi_device_unrealize(SCSIDevice *s, Error **errp)
-{
-    SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s);
-    if (sc->unrealize) {
-        sc->unrealize(s, errp);
-    }
-}
-
 int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf,
                        void *hba_private)
 {
@@ -218,7 +210,9 @@ static void scsi_qdev_unrealize(DeviceState *qdev, Error **errp)
     if (dev->vmsentry) {
         qemu_del_vm_change_state_handler(dev->vmsentry);
     }
-    scsi_device_unrealize(dev, errp);
+
+    scsi_device_purge_requests(dev, SENSE_CODE(NO_SENSE));
+    blockdev_mark_auto_del(dev->conf.blk);
 }
 
 /* handle legacy '-drive if=scsi,...' cmd line args */

hw/scsi/scsi-disk.c

@@ -2138,14 +2138,6 @@ static void scsi_disk_reset(DeviceState *dev)
     s->tray_open = 0;
 }
 
-static void scsi_unrealize(SCSIDevice *dev, Error **errp)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
-
-    scsi_device_purge_requests(&s->qdev, SENSE_CODE(NO_SENSE));
-    blockdev_mark_auto_del(s->qdev.conf.blk);
-}
-
 static void scsi_disk_resize_cb(void *opaque)
 {
     SCSIDiskState *s = opaque;
@@ -2612,7 +2604,6 @@ static void scsi_hd_class_initfn(ObjectClass *klass, void *data)
     SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
 
     sc->realize      = scsi_hd_realize;
-    sc->unrealize    = scsi_unrealize;
     sc->alloc_req    = scsi_new_request;
     sc->unit_attention_reported = scsi_disk_unit_attention_reported;
     dc->fw_name = "disk";
@@ -2643,7 +2634,6 @@ static void scsi_cd_class_initfn(ObjectClass *klass, void *data)
     SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
 
     sc->realize      = scsi_cd_realize;
-    sc->unrealize    = scsi_unrealize;
     sc->alloc_req    = scsi_new_request;
     sc->unit_attention_reported = scsi_disk_unit_attention_reported;
     dc->fw_name = "disk";
@@ -2672,7 +2662,6 @@ static void scsi_block_class_initfn(ObjectClass *klass, void *data)
     SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
 
     sc->realize      = scsi_block_realize;
-    sc->unrealize    = scsi_unrealize;
     sc->alloc_req    = scsi_block_new_request;
     sc->parse_cdb    = scsi_block_parse_cdb;
     dc->fw_name = "disk";
@@ -2710,7 +2699,6 @@ static void scsi_disk_class_initfn(ObjectClass *klass, void *data)
     SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
 
     sc->realize      = scsi_disk_realize;
-    sc->unrealize    = scsi_unrealize;
     sc->alloc_req    = scsi_new_request;
     sc->unit_attention_reported = scsi_disk_unit_attention_reported;
     dc->fw_name = "disk";

hw/scsi/scsi-generic.c

@@ -368,12 +368,6 @@ static void scsi_generic_reset(DeviceState *dev)
     scsi_device_purge_requests(s, SENSE_CODE(RESET));
 }
 
-static void scsi_unrealize(SCSIDevice *s, Error **errp)
-{
-    scsi_device_purge_requests(s, SENSE_CODE(NO_SENSE));
-    blockdev_mark_auto_del(s->conf.blk);
-}
-
 static void scsi_generic_realize(SCSIDevice *s, Error **errp)
 {
     int rc;
@@ -478,7 +472,6 @@ static void scsi_generic_class_initfn(ObjectClass *klass, void *data)
     SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
 
     sc->realize      = scsi_generic_realize;
-    sc->unrealize    = scsi_unrealize;
     sc->alloc_req    = scsi_new_request;
     sc->parse_cdb    = scsi_generic_parse_cdb;
     dc->fw_name = "disk";

include/hw/scsi/scsi.h

@@ -84,7 +84,6 @@ struct SCSIRequest {
 typedef struct SCSIDeviceClass {
     DeviceClass parent_class;
     void (*realize)(SCSIDevice *dev, Error **errp);
-    void (*unrealize)(SCSIDevice *dev, Error **errp);
     int (*parse_cdb)(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf,
                      void *hba_private);
     SCSIRequest *(*alloc_req)(SCSIDevice *s, uint32_t tag, uint32_t lun,