Staging: comedi: pcl812: Correct AI scan counting
The AI scan counter should be updated after every completed scan, not after every channel. Keep track of current channel. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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drivers/staging/comedi/drivers
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@ -995,7 +995,9 @@ static irqreturn_t interrupt_pcl812_ai_int(int irq, void *d)
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outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */
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if (s->async->cur_chan == 0) { /* one scan done */
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s->async->cur_chan++;
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if (s->async->cur_chan >= devpriv->ai_n_chan) { /* one scan done */
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s->async->cur_chan = 0;
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devpriv->ai_act_scan++;
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if (!(devpriv->ai_neverending))
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if (devpriv->ai_act_scan >= devpriv->ai_scans) { /* all data sampled */
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@ -1021,7 +1023,9 @@ static void transfer_from_dma_buf(struct comedi_device *dev,
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for (i = len; i; i--) {
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comedi_buf_put(s->async, ptr[bufptr++]); /* get one sample */
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if (s->async->cur_chan == 0) {
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s->async->cur_chan++;
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if (s->async->cur_chan >= devpriv->ai_n_chan) {
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s->async->cur_chan = 0;
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devpriv->ai_act_scan++;
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if (!devpriv->ai_neverending)
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if (devpriv->ai_act_scan >= devpriv->ai_scans) { /* all data sampled */
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