diff options
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index 999e7d010c83..68ced20f5ca5 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -2648,18 +2648,20 @@ void comedi_event(struct comedi_device *dev, struct comedi_subdevice *s) struct comedi_async *async = s->async; unsigned runflags = 0; unsigned runflags_mask = 0; + unsigned int events = async->events; + async->events = 0; if (!comedi_is_subdevice_running(s)) return; - if (async->events & COMEDI_CB_CANCEL_MASK) + if (events & COMEDI_CB_CANCEL_MASK) runflags_mask |= COMEDI_SRF_RUNNING; /* * Remember if an error event has occurred, so an error * can be returned the next time the user does a read(). */ - if (async->events & COMEDI_CB_ERROR_MASK) { + if (events & COMEDI_CB_ERROR_MASK) { runflags_mask |= COMEDI_SRF_ERROR; runflags |= COMEDI_SRF_ERROR; } @@ -2671,14 +2673,13 @@ void comedi_event(struct comedi_device *dev, struct comedi_subdevice *s) comedi_update_subdevice_runflags(s, runflags_mask, runflags); } - if (async->cb_mask & async->events) { + if (async->cb_mask & events) { wake_up_interruptible(&async->wait_head); if (s->subdev_flags & SDF_CMD_READ) kill_fasync(&dev->async_queue, SIGIO, POLL_IN); if (s->subdev_flags & SDF_CMD_WRITE) kill_fasync(&dev->async_queue, SIGIO, POLL_OUT); } - async->events = 0; } EXPORT_SYMBOL_GPL(comedi_event); |