These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / scsi / virtio_scsi.c

diff --git a/kernel/drivers/scsi/virtio_scsi.c b/kernel/drivers/scsi/virtio_scsi.c
index f164f24..7dbbb29 100644 (file)
--- a/kernel/drivers/scsi/virtio_scsi.c
+++ b/kernel/drivers/scsi/virtio_scsi.c
@@ -501,6 +501,7 @@ static void virtio_scsi_init_hdr(struct virtio_device *vdev,
        cmd->crn = 0;
 }
 
+#ifdef CONFIG_BLK_DEV_INTEGRITY
 static void virtio_scsi_init_hdr_pi(struct virtio_device *vdev,
                                    struct virtio_scsi_cmd_req_pi *cmd_pi,
                                    struct scsi_cmnd *sc)
@@ -524,6 +525,7 @@ static void virtio_scsi_init_hdr_pi(struct virtio_device *vdev,
                                                       blk_rq_sectors(rq) *
                                                       bi->tuple_size);
 }
+#endif
 
 static int virtscsi_queuecommand(struct virtio_scsi *vscsi,
                                 struct virtio_scsi_vq *req_vq,
@@ -546,11 +548,14 @@ static int virtscsi_queuecommand(struct virtio_scsi *vscsi,
 
        BUG_ON(sc->cmd_len > VIRTIO_SCSI_CDB_SIZE);
 
+#ifdef CONFIG_BLK_DEV_INTEGRITY
        if (virtio_has_feature(vscsi->vdev, VIRTIO_SCSI_F_T10_PI)) {
                virtio_scsi_init_hdr_pi(vscsi->vdev, &cmd->req.cmd_pi, sc);
                memcpy(cmd->req.cmd_pi.cdb, sc->cmnd, sc->cmd_len);
                req_size = sizeof(cmd->req.cmd_pi);
-       } else {
+       } else
+#endif
+       {
                virtio_scsi_init_hdr(vscsi->vdev, &cmd->req.cmd, sc);
                memcpy(cmd->req.cmd.cdb, sc->cmnd, sc->cmd_len);
                req_size = sizeof(cmd->req.cmd);
@@ -944,7 +949,7 @@ static int virtscsi_probe(struct virtio_device *vdev)
 {
        struct Scsi_Host *shost;
        struct virtio_scsi *vscsi;
-       int err, host_prot;
+       int err;
        u32 sg_elems, num_targets;
        u32 cmd_per_lun;
        u32 num_queues;
@@ -1002,7 +1007,10 @@ static int virtscsi_probe(struct virtio_device *vdev)
        shost->max_cmd_len = VIRTIO_SCSI_CDB_SIZE;
        shost->nr_hw_queues = num_queues;
 
+#ifdef CONFIG_BLK_DEV_INTEGRITY
        if (virtio_has_feature(vdev, VIRTIO_SCSI_F_T10_PI)) {
+               int host_prot;
+
                host_prot = SHOST_DIF_TYPE1_PROTECTION | SHOST_DIF_TYPE2_PROTECTION |
                            SHOST_DIF_TYPE3_PROTECTION | SHOST_DIX_TYPE1_PROTECTION |
                            SHOST_DIX_TYPE2_PROTECTION | SHOST_DIX_TYPE3_PROTECTION;
@@ -1010,6 +1018,7 @@ static int virtscsi_probe(struct virtio_device *vdev)
                scsi_host_set_prot(shost, host_prot);
                scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
        }
+#endif
 
        err = scsi_add_host(shost, &vdev->dev);
        if (err)
@@ -1090,7 +1099,9 @@ static struct virtio_device_id id_table[] = {
 static unsigned int features[] = {
        VIRTIO_SCSI_F_HOTPLUG,
        VIRTIO_SCSI_F_CHANGE,
+#ifdef CONFIG_BLK_DEV_INTEGRITY
        VIRTIO_SCSI_F_T10_PI,
+#endif
 };
 
 static struct virtio_driver virtio_scsi_driver = {