scsi: Drop scsi_req_abort

The only user of this function is spapr_vscsi.c. We can convert to
scsi_req_cancel plus adding a check in vscsi_request_cancelled.
Suggested-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NFam Zheng <famz@redhat.com>
[Drop prototype. - Paolo]
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/scsi/scsi-bus.c

@@ -1736,21 +1736,6 @@ void scsi_req_cancel(SCSIRequest *req)
     scsi_req_unref(req);
 }
 
-void scsi_req_abort(SCSIRequest *req, int status)
-{
-    if (!req->enqueued) {
-        return;
-    }
-    scsi_req_ref(req);
-    scsi_req_dequeue(req);
-    req->io_canceled = true;
-    if (req->ops->cancel_io) {
-        req->ops->cancel_io(req);
-    }
-    scsi_req_complete(req, status);
-    scsi_req_unref(req);
-}
-
 static int scsi_ua_precedence(SCSISense sense)
 {
     if (sense.key != UNIT_ATTENTION) {

hw/scsi/spapr_vscsi.c

@@ -77,8 +77,9 @@ typedef struct vscsi_req {
     SCSIRequest             *sreq;
     uint32_t                qtag; /* qemu tag != srp tag */
     bool                    active;
-    uint32_t                data_len;
     bool                    writing;
+    bool                    dma_error;
+    uint32_t                data_len;
     uint32_t                senselen;
     uint8_t                 sense[SCSI_SENSE_BUF_SIZE];
 
@@ -536,8 +537,8 @@ static void vscsi_transfer_data(SCSIRequest *sreq, uint32_t len)
     }
     if (rc < 0) {
         fprintf(stderr, "VSCSI: RDMA error rc=%d!\n", rc);
-        vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0);
-        scsi_req_abort(req->sreq, CHECK_CONDITION);
+        req->dma_error = true;
+        scsi_req_cancel(req->sreq);
         return;
     }
 
@@ -591,6 +592,12 @@ static void vscsi_request_cancelled(SCSIRequest *sreq)
 {
     vscsi_req *req = sreq->hba_private;
 
+    if (req->dma_error) {
+        VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent);
+
+        vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0);
+        vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0);
+    }
     vscsi_put_req(req);
 }
 

include/hw/scsi/scsi.h

@@ -265,7 +265,6 @@ void scsi_req_data(SCSIRequest *req, int len);
 void scsi_req_complete(SCSIRequest *req, int status);
 uint8_t *scsi_req_get_buf(SCSIRequest *req);
 int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len);
-void scsi_req_abort(SCSIRequest *req, int status);
 void scsi_req_cancel(SCSIRequest *req);
 void scsi_req_retry(SCSIRequest *req);
 void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense);