staging: comedi: amplc_dio200_common: use comedi_handle_events()

Use comedi_handle_events() to automatically (*cancel) the async command
for an end-of-acquisition or if an error/overflow occurs.

Also, comedi_handle_events() does nothing if no events are set so the
local variable 'oldevents' can be removed.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/amplc_dio200_common.c b/drivers/staging/comedi/drivers/amplc_dio200_common.c
index 2c1bfb0..944d454 100644 (file)
--- a/drivers/staging/comedi/drivers/amplc_dio200_common.c
+++ b/drivers/staging/comedi/drivers/amplc_dio200_common.c
@@ -272,7 +272,6 @@ static void dio200_read_scan_intr(struct comedi_device *dev,
                s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS);
        } else {
                /* Error!  Stop acquisition.  */
-               dio200_stop_intr(dev, s);
                s->async->events |= COMEDI_CB_ERROR | COMEDI_CB_OVERFLOW;
                dev_err(dev->class_dev, "buffer overflow\n");
        }
@@ -281,10 +280,8 @@ static void dio200_read_scan_intr(struct comedi_device *dev,
        if (cmd->stop_src == TRIG_COUNT) {
                if (subpriv->stopcount > 0) {
                        subpriv->stopcount--;
-                       if (subpriv->stopcount == 0) {
+                       if (subpriv->stopcount == 0)
                                s->async->events |= COMEDI_CB_EOA;
-                               dio200_stop_intr(dev, s);
-                       }
                }
        }
 }
@@ -297,13 +294,11 @@ static int dio200_handle_read_intr(struct comedi_device *dev,
        unsigned triggered;
        unsigned intstat;
        unsigned cur_enabled;
-       unsigned int oldevents;
        unsigned long flags;
 
        triggered = 0;
 
        spin_lock_irqsave(&subpriv->spinlock, flags);
-       oldevents = s->async->events;
        if (board->has_int_sce) {
                /*
                 * Collect interrupt sources that have triggered and disable
@@ -356,8 +351,7 @@ static int dio200_handle_read_intr(struct comedi_device *dev,
        }
        spin_unlock_irqrestore(&subpriv->spinlock, flags);
 
-       if (oldevents != s->async->events)
-               comedi_event(dev, s);
+       comedi_handle_events(dev, s);
 
        return (triggered != 0);
 }