staging: comedi: pcmmio: 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/pcmmio.c b/drivers/staging/comedi/drivers/pcmmio.c
index fc40ee2..6d60d40 100644 (file)
--- a/drivers/staging/comedi/drivers/pcmmio.c
+++ b/drivers/staging/comedi/drivers/pcmmio.c
@@ -337,7 +337,6 @@ static void pcmmio_handle_dio_intr(struct comedi_device *dev,
 {
        struct pcmmio_private *devpriv = dev->private;
        struct comedi_cmd *cmd = &s->async->cmd;
-       unsigned int oldevents = s->async->events;
        unsigned int val = 0;
        unsigned long flags;
        int i;
@@ -359,29 +358,20 @@ static void pcmmio_handle_dio_intr(struct comedi_device *dev,
 
        /* Write the scan to the buffer. */
        if (comedi_buf_put(s, val) &&
-           comedi_buf_put(s, val >> 16)) {
+           comedi_buf_put(s, val >> 16))
                s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS);
-       } else {
-               /* Overflow! Stop acquisition!! */
-               /* TODO: STOP_ACQUISITION_CALL_HERE!! */
-               pcmmio_stop_intr(dev, s);
-       }
 
        /* Check for end of acquisition. */
        if (cmd->stop_src == TRIG_COUNT && devpriv->stop_count > 0) {
                devpriv->stop_count--;
-               if (devpriv->stop_count == 0) {
+               if (devpriv->stop_count == 0)
                        s->async->events |= COMEDI_CB_EOA;
-                       /* TODO: STOP_ACQUISITION_CALL_HERE!! */
-                       pcmmio_stop_intr(dev, s);
-               }
        }
 
 done:
        spin_unlock_irqrestore(&devpriv->spinlock, flags);
 
-       if (oldevents != s->async->events)
-               comedi_event(dev, s);
+       comedi_handle_events(dev, s);
 }
 
 static irqreturn_t interrupt_pcmmio(int irq, void *d)