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staging: comedi: amplc_pci224: only calc the pacer divisors once

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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@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2014-04-23 15:57:19 -07:00 committed by Greg Kroah-Hartman
parent afb2bf149a
commit 43268701b5
1 changed files with 0 additions and 8 deletions
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8
drivers/staging/comedi/drivers/amplc_pci224.c
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@ -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