scsi: introduce scsi_req_new

Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>

hw/esp.c

@@ -244,7 +244,7 @@ static void do_busid_cmd(ESPState *s, uint8_t *buf, uint8_t busid)
 
     DPRINTF("do_busid_cmd: busid 0x%x\n", busid);
     lun = busid & 7;
-    s->current_req = s->current_dev->info->alloc_req(s->current_dev, 0, lun);
+    s->current_req = scsi_req_new(s->current_dev, 0, lun);
     datalen = scsi_req_enqueue(s->current_req, buf);
     s->ti_size = datalen;
     if (datalen != 0) {

hw/lsi53c895a.c

@@ -788,8 +788,7 @@ static void lsi_do_command(LSIState *s)
     assert(s->current == NULL);
     s->current = qemu_mallocz(sizeof(lsi_request));
     s->current->tag = s->select_tag;
-    s->current->req = dev->info->alloc_req(dev, s->current->tag,
-                                           s->current_lun);
+    s->current->req = scsi_req_new(dev, s->current->tag, s->current_lun);
 
     n = scsi_req_enqueue(s->current->req, buf);
     if (n > 0) {

hw/scsi-bus.c

@@ -146,6 +146,11 @@ SCSIRequest *scsi_req_alloc(size_t size, SCSIDevice *d, uint32_t tag, uint32_t l
     return req;
 }
 
+SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun)
+{
+    return d->info->alloc_req(d, tag, lun);
+}
+
 int32_t scsi_req_enqueue(SCSIRequest *req, uint8_t *buf)
 {
     int32_t rc;

hw/scsi.h

@@ -143,6 +143,7 @@ int scsi_build_sense(SCSISense sense, uint8_t *buf, int len, int fixed);
 int scsi_sense_valid(SCSISense sense);
 
 SCSIRequest *scsi_req_alloc(size_t size, SCSIDevice *d, uint32_t tag, uint32_t lun);
+SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun);
 int32_t scsi_req_enqueue(SCSIRequest *req, uint8_t *buf);
 void scsi_req_free(SCSIRequest *req);
 SCSIRequest *scsi_req_ref(SCSIRequest *req);

hw/spapr_vscsi.c

@@ -653,7 +653,7 @@ static int vscsi_queue_cmd(VSCSIState *s, vscsi_req *req)
 
     req->sdev = sdev;
     req->lun = lun;
-    req->sreq = sdev->info->alloc_req(sdev, req->qtag, lun);
+    req->sreq = scsi_req_new(sdev, req->qtag, lun);
     n = scsi_req_enqueue(req->sreq, srp->cmd.cdb);
 
     dprintf("VSCSI: Queued command tag 0x%x CMD 0x%x ID %d LUN %d ret: %d\n",

hw/usb-msd.c

@@ -377,7 +377,7 @@ static int usb_msd_handle_data(USBDevice *dev, USBPacket *p)
                     s->tag, cbw.flags, cbw.cmd_len, s->data_len);
             s->residue = 0;
             s->scsi_len = 0;
-            s->req = s->scsi_dev->info->alloc_req(s->scsi_dev, s->tag, 0);
+            s->req = scsi_req_new(s->scsi_dev, s->tag, 0);
             scsi_req_enqueue(s->req, cbw.cmd);
             /* ??? Should check that USB and SCSI data transfer
                directions match.  */