Use the comedi_fc helper function to automatically call the subdevice
(*cancel) function when needed and call comedi_event().
Also, remove the clearing of the events, comedi_event() does that.
In the Kconfig, COMEDI_NI_AT_A2150 already selects COMEDI_FC.
Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/comedi/drivers/ni_at_a2150.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/comedi/drivers/ni_at_a2150.c
b/drivers/staging/comedi/drivers/ni_at_a2150.c
index 740f149..4e39b1f 100644
--- a/drivers/staging/comedi/drivers/ni_at_a2150.c
+++ b/drivers/staging/comedi/drivers/ni_at_a2150.c
@@ -184,7 +184,6 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
}
/* initialize async here to make sure s is not NULL */
async = s->async;
- async->events = 0;
cmd = &async->cmd;
status = inw(dev->iobase + STATUS_REG);
@@ -196,15 +195,14 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
if (status & OVFL_BIT) {
comedi_error(dev, "fifo overflow");
- a2150_cancel(dev, s);
async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
+ cfc_handle_events(dev, s);
}
if ((status & DMA_TC_BIT) == 0) {
comedi_error(dev, "caught non-dma interrupt? Aborting.");
- a2150_cancel(dev, s);
async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
- comedi_event(dev, s);
+ cfc_handle_events(dev, s);
return IRQ_HANDLED;
}
@@ -249,7 +247,6 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
cfc_write_to_buffer(s, dpnt);
if (cmd->stop_src == TRIG_COUNT) {
if (--devpriv->count == 0) { /* end of acquisition */
- a2150_cancel(dev, s);
async->events |= COMEDI_CB_EOA;
break;
}
@@ -265,7 +262,7 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
async->events |= COMEDI_CB_BLOCK;
- comedi_event(dev, s);
+ cfc_handle_events(dev, s);
/* clear interrupt */
outw(0x00, dev->iobase + DMA_TC_CLEAR_REG);
--
1.8.5.2
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