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

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>

diff --git a/drivers/staging/comedi/drivers/pcl812.c b/drivers/staging/comedi/drivers/pcl812.c
index b13e9fb..c3499aa 100644 (file)
--- a/drivers/staging/comedi/drivers/pcl812.c
+++ b/drivers/staging/comedi/drivers/pcl812.c
@@ -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;
        }