The trigger sources were already validataed in the (*do_cmdtest) before the
(*do_cmd) is called. Refactor the code in das800_ai_do_cmd() to use if/else
instead of the switch since the default cases can never be reached.
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/das800.c | 17 +++--------------
1 file changed, 3 insertions(+), 14 deletions(-)
diff --git a/drivers/staging/comedi/drivers/das800.c
b/drivers/staging/comedi/drivers/das800.c
index dbe94ce..8c15929 100644
--- a/drivers/staging/comedi/drivers/das800.c
+++ b/drivers/staging/comedi/drivers/das800.c
@@ -420,17 +420,12 @@ static int das800_ai_do_cmd(struct comedi_device *dev,
gain &= 0xf;
outb(gain, dev->iobase + DAS800_GAIN);
- switch (async->cmd.stop_src) {
- case TRIG_COUNT:
+ if (async->cmd.stop_src == TRIG_COUNT) {
devpriv->count = async->cmd.stop_arg * async->cmd.chanlist_len;
devpriv->forever = false;
- break;
- case TRIG_NONE:
+ } else { /* TRIG_NONE */
devpriv->forever = true;
devpriv->count = 0;
- break;
- default:
- break;
}
/* enable auto channel scan, send interrupts on end of conversion
@@ -440,19 +435,13 @@ static int das800_ai_do_cmd(struct comedi_device *dev,
conv_bits |= EACS | IEOC;
if (async->cmd.start_src == TRIG_EXT)
conv_bits |= DTEN;
- switch (async->cmd.convert_src) {
- case TRIG_TIMER:
+ if (async->cmd.convert_src == TRIG_TIMER) {
conv_bits |= CASC | ITE;
/* set conversion frequency */
if (das800_set_frequency(dev) < 0) {
comedi_error(dev, "Error setting up counters");
return -1;
}
- break;
- case TRIG_EXT:
- break;
- default:
- break;
}
spin_lock_irqsave(&dev->spinlock, irq_flags);
--
1.8.5.2
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