[SCSI] virtio-scsi: initialize scatterlist structure

The sg struct is used without being initialized, which breaks
when CONFIG_DEBUG_SG is enabled.

Cc: stable@vger.kernel.org
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 3e79a2f0004279d0b2b1175281d003a664d5aeee..7554d78564348cee5127a1b05a209d3f9895aea1 100644 (file)
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -219,7 +219,7 @@ static int virtscsi_kick_event(struct virtio_scsi *vscsi,
        struct scatterlist sg;
        unsigned long flags;
 
-       sg_set_buf(&sg, &event_node->event, sizeof(struct virtio_scsi_event));
+       sg_init_one(&sg, &event_node->event, sizeof(struct virtio_scsi_event));
 
        spin_lock_irqsave(&vscsi->event_vq.vq_lock, flags);