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-rw-r--r--drivers/scsi/virtio_scsi.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 57c39e1e6681..11f5326f449f 100644
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -270,6 +270,16 @@ static void virtscsi_req_done(struct virtqueue *vq)
virtscsi_vq_done(vscsi, req_vq, virtscsi_complete_cmd);
};
+static void virtscsi_poll_requests(struct virtio_scsi *vscsi)
+{
+ int i, num_vqs;
+
+ num_vqs = vscsi->num_queues;
+ for (i = 0; i < num_vqs; i++)
+ virtscsi_vq_done(vscsi, &vscsi->req_vqs[i],
+ virtscsi_complete_cmd);
+}
+
static void virtscsi_complete_free(struct virtio_scsi *vscsi, void *buf)
{
struct virtio_scsi_cmd *cmd = buf;
@@ -604,6 +614,18 @@ static int virtscsi_tmf(struct virtio_scsi *vscsi, struct virtio_scsi_cmd *cmd)
cmd->resp.tmf.response == VIRTIO_SCSI_S_FUNCTION_SUCCEEDED)
ret = SUCCESS;
+ /*
+ * The spec guarantees that all requests related to the TMF have
+ * been completed, but the callback might not have run yet if
+ * we're using independent interrupts (e.g. MSI). Poll the
+ * virtqueues once.
+ *
+ * In the abort case, sc->scsi_done will do nothing, because
+ * the block layer must have detected a timeout and as a result
+ * REQ_ATOM_COMPLETE has been set.
+ */
+ virtscsi_poll_requests(vscsi);
+
out:
mempool_free(cmd, virtscsi_cmd_pool);
return ret;