virtio: allow drivers to request IRQ affinity when creating VQs

[karo-tx-linux.git] / drivers / scsi / virtio_scsi.c

diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index ec91bd07f00a307337283cbea6f72c6e370a0170..c9c5ea0611e9be5113d2030677e0dd24ccd89b0d 100644 (file)
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -534,7 +534,9 @@ static int virtscsi_queuecommand(struct virtio_scsi *vscsi,
 {
        struct Scsi_Host *shost = virtio_scsi_host(vscsi->vdev);
        struct virtio_scsi_cmd *cmd = scsi_cmd_priv(sc);
+       unsigned long flags;
        int req_size;
+       int ret;
 
        BUG_ON(scsi_sg_count(sc) > shost->sg_tablesize);
 
@@ -562,8 +564,15 @@ static int virtscsi_queuecommand(struct virtio_scsi *vscsi,
                req_size = sizeof(cmd->req.cmd);
        }
 
-       if (virtscsi_kick_cmd(req_vq, cmd, req_size, sizeof(cmd->resp.cmd)) != 0)
+       ret = virtscsi_kick_cmd(req_vq, cmd, req_size, sizeof(cmd->resp.cmd));
+       if (ret == -EIO) {
+               cmd->resp.cmd.response = VIRTIO_SCSI_S_BAD_TARGET;
+               spin_lock_irqsave(&req_vq->vq_lock, flags);
+               virtscsi_complete_cmd(vscsi, cmd);
+               spin_unlock_irqrestore(&req_vq->vq_lock, flags);
+       } else if (ret != 0) {
                return SCSI_MLQUEUE_HOST_BUSY;
+       }
        return 0;
 }
 
@@ -932,7 +941,8 @@ static int virtscsi_init(struct virtio_device *vdev,
        }
 
        /* Discover virtqueues and write information to configuration.  */
-       err = vdev->config->find_vqs(vdev, num_vqs, vqs, callbacks, names);
+       err = vdev->config->find_vqs(vdev, num_vqs, vqs, callbacks, names,
+                       NULL);
        if (err)
                goto out;