diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2013-06-03 14:09:39 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2013-07-04 17:37:30 +0200 |
| commit | cac3c384bb986f06a308e551641284586924813c (patch) | |
| tree | 46f90acd8f2446d5716212ac6d82a0451f3c7e5c /hw/scsi | |
| parent | 6046c620866f6f5c53eaece9f4ad8d44a12e1185 (diff) | |
| download | qemu-cac3c384bb986f06a308e551641284586924813c.tar.gz | |
scsi: keep device alive while it has requests
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/scsi')
| -rw-r--r-- | hw/scsi/scsi-bus.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c index 53ea906433..a92b7c1de4 100644 --- a/hw/scsi/scsi-bus.c +++ b/hw/scsi/scsi-bus.c @@ -505,10 +505,12 @@ SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, uint32_t tag, uint32_t lun, void *hba_private) { SCSIRequest *req; + SCSIBus *bus = scsi_bus_from_device(d); + BusState *qbus = BUS(bus); req = g_malloc0(reqops->size); req->refcount = 1; - req->bus = scsi_bus_from_device(d); + req->bus = bus; req->dev = d; req->tag = tag; req->lun = lun; @@ -516,6 +518,8 @@ SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, req->status = -1; req->sense_len = 0; req->ops = reqops; + object_ref(OBJECT(d)); + object_ref(OBJECT(qbus->parent)); trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); return req; } @@ -1498,13 +1502,17 @@ void scsi_req_unref(SCSIRequest *req) { assert(req->refcount > 0); if (--req->refcount == 0) { - SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, req->dev->qdev.parent_bus); + BusState *qbus = req->dev->qdev.parent_bus; + SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, qbus); + if (bus->info->free_request && req->hba_private) { bus->info->free_request(bus, req->hba_private); } if (req->ops->free_req) { req->ops->free_req(req); } + object_unref(OBJECT(req->dev)); + object_unref(OBJECT(qbus->parent)); g_free(req); } } |