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staging: comedi: pcl812: use comedi_async 'scans_done' to detect EOA

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Remove the private data member 'ai_act_scan' and use the comedi_async
'scans_done' member to detect the 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>
This commit is contained in:
H Hartley Sweeten 2014-11-05 10:20:56 -07:00 committed by Greg Kroah-Hartman
parent 8712f901c9
commit 5f6da288e3
1 changed files with 1 additions and 8 deletions
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9
drivers/staging/comedi/drivers/pcl812.c
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@ -512,7 +512,6 @@ struct pcl812_private {
unsigned int last_ai_chanspec;
unsigned char mode_reg_int; /* there is stored INT number for some card */
unsigned int ai_poll_ptr; /* how many sampes transfer poll */
unsigned int ai_act_scan; /* how many scans we finished */
unsigned int dmapages;
unsigned int hwdmasize;
unsigned long dmabuf[2]; /* PTR to DMA buf */
@ -807,7 +806,6 @@ static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
devpriv->ai_dma = 0;
}
devpriv->ai_act_scan = 0;
devpriv->ai_poll_ptr = 0;
/* don't we want wake up every scan? */
@ -840,15 +838,10 @@ static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
static bool pcl812_ai_next_chan(struct comedi_device *dev,
struct comedi_subdevice *s)
{
struct pcl812_private *devpriv = dev->private;
struct comedi_cmd *cmd = &s->async->cmd;
if (s->async->cur_chan == 0)
devpriv->ai_act_scan++;
if (cmd->stop_src == TRIG_COUNT &&
devpriv->ai_act_scan >= cmd->stop_arg) {
/* all data sampled */
s->async->scans_done >= cmd->stop_arg) {
s->async->events |= COMEDI_CB_EOA;
return false;
}