scsi: virtio_scsi: Use complete() instead complete_all()

There is only one waiter for the completion, therefore there is no need
to use complete_all(). Let's make that clear by using complete() instead
of complete_all().

The usage pattern of the completion is:

waiter context                          waker context

virtscsi_tmf()
  DECLARE_COMPLETION_ONSTACK()
  virtscsi_kick_cmd()
  wait_for_completion()

                                        virtscsi_complete_free()
                                          complete()

Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 7dbbb29d24c6cf5290cd06a7a97df570a8860f18..86924ff145ef282cdc15ae7bdcf3d354c507a200 100644 (file)
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -258,7 +258,7 @@ static void virtscsi_complete_free(struct virtio_scsi *vscsi, void *buf)
        struct virtio_scsi_cmd *cmd = buf;
 
        if (cmd->comp)
-               complete_all(cmd->comp);
+               complete(cmd->comp);
 }
 
 static void virtscsi_ctrl_done(struct virtqueue *vq)