This function always succeeds. Change the return type to void and
remove the unnecessary error check in me4000_ai_do_cmd().
Move the function call in me4000_ai_do_cmd_test() from before Step 1
to Step 3 where the arguments are validated. There is no reason to
get the values if the previous steps fail.
Rename the function so it has namespace associated with the driver.
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/me4000.c | 27 +++++++++++++--------------
1 file changed, 13 insertions(+), 14 deletions(-)
diff --git a/drivers/staging/comedi/drivers/me4000.c
b/drivers/staging/comedi/drivers/me4000.c
index 97c243f..cd7dbb6d 100644
--- a/drivers/staging/comedi/drivers/me4000.c
+++ b/drivers/staging/comedi/drivers/me4000.c
@@ -580,11 +580,12 @@ static int me4000_ai_check_chanlist(struct comedi_device
*dev,
return 0;
}
-static int ai_round_cmd_args(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_cmd *cmd,
- unsigned int *init_ticks,
- unsigned int *scan_ticks, unsigned int *chan_ticks)
+static void me4000_ai_round_cmd_args(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_cmd *cmd,
+ unsigned int *init_ticks,
+ unsigned int *scan_ticks,
+ unsigned int *chan_ticks)
{
int rest;
@@ -630,8 +631,6 @@ static int ai_round_cmd_args(struct comedi_device *dev,
(*chan_ticks)++;
}
}
-
- return 0;
}
static void ai_write_timer(struct comedi_device *dev,
@@ -757,10 +756,8 @@ static int me4000_ai_do_cmd(struct comedi_device *dev,
return err;
/* Round the timer arguments */
- err = ai_round_cmd_args(dev,
- s, cmd, &init_ticks, &scan_ticks, &chan_ticks);
- if (err)
- return err;
+ me4000_ai_round_cmd_args(dev, s, cmd,
+ &init_ticks, &scan_ticks, &chan_ticks);
/* Prepare the AI for acquisition */
err = ai_prepare(dev, s, cmd, init_ticks, scan_ticks, chan_ticks);
@@ -782,9 +779,6 @@ static int me4000_ai_do_cmd_test(struct comedi_device *dev,
unsigned int scan_ticks;
int err = 0;
- /* Round the timer arguments */
- ai_round_cmd_args(dev, s, cmd, &init_ticks, &scan_ticks, &chan_ticks);
-
/* Step 1 : check if triggers are trivially valid */
err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_EXT);
@@ -842,6 +836,11 @@ static int me4000_ai_do_cmd_test(struct comedi_device *dev,
cmd->chanlist_len = 1;
err |= -EINVAL;
}
+
+ /* Round the timer arguments */
+ me4000_ai_round_cmd_args(dev, s, cmd,
+ &init_ticks, &scan_ticks, &chan_ticks);
+
if (init_ticks < 66) {
cmd->start_arg = 2000;
err |= -EINVAL;
--
2.4.3
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