[PATCH 4/4] staging: comedi: amplc_pci224: only calc the pacer divisors once
H Hartley Sweeten
hsweeten at visionengravers.com
Wed Apr 23 22:57:19 UTC 2014
When the cmd->scan_begin_src == TRIG_TIMER the divisors needed to
generate the pacer time are calculated in the (*do_cmdtest) to
validate the cmd->scan_begin_arg. The core always does the
(*do_cmdtest) before the (*do_cmd) so there is no reason to recalc
the divisors.
Signed-off-by: H Hartley Sweeten <hsweeten at visionengravers.com>
Cc: Ian Abbott <abbotti at mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
drivers/staging/comedi/drivers/amplc_pci224.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/drivers/staging/comedi/drivers/amplc_pci224.c b/drivers/staging/comedi/drivers/amplc_pci224.c
index 37a81b7..f0b04ca 100644
--- a/drivers/staging/comedi/drivers/amplc_pci224.c
+++ b/drivers/staging/comedi/drivers/amplc_pci224.c
@@ -869,14 +869,6 @@ static void pci224_ao_start_pacer(struct comedi_device *dev,
struct comedi_subdevice *s)
{
struct pci224_private *devpriv = dev->private;
- struct comedi_cmd *cmd = &s->async->cmd;
-
- /* Use two timers. */
- i8253_cascade_ns_to_timer(I8254_OSC_BASE_10MHZ,
- &devpriv->cached_div1,
- &devpriv->cached_div2,
- &cmd->scan_begin_arg,
- cmd->flags);
/*
* The output of timer Z2-0 will be used as the scan trigger
--
1.9.2
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