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author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2014-11-05 10:21:06 -0700 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-05 14:59:47 -0800 |
commit | 4b8ffac3859155b1f3c5ded5aeda41fedfe5555e (patch) | |
tree | 91993fccfe49982a3bff4ace9d23bdfb96c04d11 | |
parent | 88340999de06facf5f4ae1b9f5b620ee04715a00 (diff) | |
download | linux-stable-4b8ffac3859155b1f3c5ded5aeda41fedfe5555e.tar.gz linux-stable-4b8ffac3859155b1f3c5ded5aeda41fedfe5555e.tar.bz2 linux-stable-4b8ffac3859155b1f3c5ded5aeda41fedfe5555e.zip |
staging: comedi: usbduxsigma: use comedi_async 'scans_done' to detect AO EOA
Remove the private data member 'ao_sample_count' and use the comedi_async
'scans_done' member to detect the analog output end-of-acquisition.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r-- | drivers/staging/comedi/drivers/usbduxsigma.c | 30 |
1 files changed, 4 insertions, 26 deletions
diff --git a/drivers/staging/comedi/drivers/usbduxsigma.c b/drivers/staging/comedi/drivers/usbduxsigma.c index 9ee6e0a78578..31b280656a1a 100644 --- a/drivers/staging/comedi/drivers/usbduxsigma.c +++ b/drivers/staging/comedi/drivers/usbduxsigma.c @@ -166,7 +166,6 @@ struct usbduxsigma_private { /* number of samples to acquire */ int ai_sample_count; - int ao_sample_count; /* time between samples in units of the timer */ unsigned int ai_timer; unsigned int ao_timer; @@ -358,12 +357,10 @@ static void usbduxsigma_ao_handle_urb(struct comedi_device *dev, if (devpriv->ao_counter == 0) { devpriv->ao_counter = devpriv->ao_timer; - if (cmd->stop_src == TRIG_COUNT) { - devpriv->ao_sample_count--; - if (devpriv->ao_sample_count < 0) { - async->events |= COMEDI_CB_EOA; - return; - } + if (cmd->stop_src == TRIG_COUNT && + async->scans_done >= cmd->stop_arg) { + async->events |= COMEDI_CB_EOA; + return; } /* transmit data to the USB bus */ @@ -952,25 +949,6 @@ static int usbduxsigma_ao_cmdtest(struct comedi_device *dev, if (devpriv->ao_timer < 1) err |= -EINVAL; - if (cmd->stop_src == TRIG_COUNT) { - /* not continuous, use counter */ - if (high_speed) { - /* high speed also scans everything at once */ - devpriv->ao_sample_count = cmd->stop_arg * - cmd->scan_end_arg; - } else { - /* - * There's no scan as the scan has been - * handled inside the FX2. Data arrives as - * one packet. - */ - devpriv->ao_sample_count = cmd->stop_arg; - } - } else { - /* continuous acquisition */ - devpriv->ao_sample_count = 0; - } - if (err) return 4; |