This function never fails and it's only called by me4000_ai_do_cmd().
Absorb it and remove the unnecessary failure check.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/me4000.c | 31 +++++++++----------------------
1 file changed, 9 insertions(+), 22 deletions(-)
diff --git a/drivers/staging/comedi/drivers/me4000.c b/drivers/staging/comedi/drivers/me4000.c
index 9da09c4..1e6ea09 100644
--- a/drivers/staging/comedi/drivers/me4000.c
+++ b/drivers/staging/comedi/drivers/me4000.c
@@ -671,12 +671,18 @@ static int me4000_ai_write_chanlist(struct comedi_device *dev,
return 0;
}
-static int ai_prepare(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_cmd *cmd)
+static int me4000_ai_do_cmd(struct comedi_device *dev,
+ struct comedi_subdevice *s)
{
struct me4000_private *devpriv = dev->private;
+ struct comedi_cmd *cmd = &s->async->cmd;
unsigned int ctrl;
+ int err;
+
+ /* Reset the analog input */
+ err = me4000_ai_cancel(dev, s);
+ if (err)
+ return err;
/* Write timer arguments */
ai_write_timer(dev);
@@ -708,25 +714,6 @@ static int ai_prepare(struct comedi_device *dev,
/* Write the channel list */
me4000_ai_write_chanlist(dev, s, cmd);
- return 0;
-}
-
-static int me4000_ai_do_cmd(struct comedi_device *dev,
- struct comedi_subdevice *s)
-{
- int err;
- struct comedi_cmd *cmd = &s->async->cmd;
-
- /* Reset the analog input */
- err = me4000_ai_cancel(dev, s);
- if (err)
- return err;
-
- /* Prepare the AI for acquisition */
- err = ai_prepare(dev, s, cmd);
- if (err)
- return err;
-
/* Start acquistion by dummy read */
inl(dev->iobase + ME4000_AI_START_REG);
--
2.4.3
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