[PATCH 2/4] staging: comedi: dt282x: fix dt282x_dio_insn_config()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is the (*insn_config) function for a DIO subdevice. It should be
using the data[0] value as the "instruction" to perform on the subdevice.

Use the comedi_dio_insn_config() helper to properly handle instructions.

Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/staging/comedi/drivers/dt282x.c | 25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)

diff --git a/drivers/staging/comedi/drivers/dt282x.c b/drivers/staging/comedi/drivers/dt282x.c
index 4a25382..da3ee85 100644
--- a/drivers/staging/comedi/drivers/dt282x.c
+++ b/drivers/staging/comedi/drivers/dt282x.c
@@ -982,29 +982,32 @@ static int dt282x_dio_insn_bits(struct comedi_device *dev,
 
 static int dt282x_dio_insn_config(struct comedi_device *dev,
 				  struct comedi_subdevice *s,
-				  struct comedi_insn *insn, unsigned int *data)
+				  struct comedi_insn *insn,
+				  unsigned int *data)
 {
 	struct dt282x_private *devpriv = dev->private;
-	int mask;
+	unsigned int chan = CR_CHAN(insn->chanspec);
+	unsigned int mask;
+	int ret;
 
-	mask = (CR_CHAN(insn->chanspec) < 8) ? 0x00ff : 0xff00;
-	if (data[0])
-		s->io_bits |= mask;
+	if (chan < 8)
+		mask = 0x00ff;
 	else
-		s->io_bits &= ~mask;
+		mask = 0xff00;
+
+	ret = comedi_dio_insn_config(dev, s, insn, data, mask);
+	if (ret)
+		return ret;
 
+	devpriv->dacsr &= ~(DT2821_LBOE | DT2821_HBOE);
 	if (s->io_bits & 0x00ff)
 		devpriv->dacsr |= DT2821_LBOE;
-	else
-		devpriv->dacsr &= ~DT2821_LBOE;
 	if (s->io_bits & 0xff00)
 		devpriv->dacsr |= DT2821_HBOE;
-	else
-		devpriv->dacsr &= ~DT2821_HBOE;
 
 	outw(devpriv->dacsr, dev->iobase + DT2821_DACSR);
 
-	return 1;
+	return insn->n;
 }
 
 static const struct comedi_lrange *const ai_range_table[] = {
-- 
1.8.3.2

_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel




[Index of Archives]     [Linux Driver Backports]     [DMA Engine]     [Linux GPIO]     [Linux SPI]     [Video for Linux]     [Linux USB Devel]     [Linux Coverity]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]
  Powered by Linux