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Commit b03130b6 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
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staging: comedi: pcmuio: use comedi_async 'scans_done' to detect EOA 



Remove the private data member 'stop_count' and use the comedi_async 'scans_done'
member to detect the end-of-acquisition.

Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 09959d65

drivers/staging/comedi/drivers/pcmuio.c

+3 −11
Original line number Diff line number Diff line
@@ -130,7 +130,6 @@ struct pcmuio_asic { 
	spinlock_t pagelock;	/* protects the page registers */

	spinlock_t spinlock;	/* protects member variables */

	unsigned int enabled_mask;

	unsigned int stop_count;

	unsigned int active:1;

};
@@ -338,14 +337,9 @@ static void pcmuio_handle_intr_subdev(struct comedi_device *dev, 


	comedi_buf_write_samples(s, &val, 1);



	/* Check for end of acquisition. */

	if (cmd->stop_src == TRIG_COUNT) {

		if (chip->stop_count > 0) {

			chip->stop_count--;

			if (chip->stop_count == 0)

	if (cmd->stop_src == TRIG_COUNT &&

	    s->async->scans_done >= cmd->stop_arg)

		s->async->events |= COMEDI_CB_EOA;

		}

	}



done:

	spin_unlock_irqrestore(&chip->spinlock, flags);
@@ -474,8 +468,6 @@ static int pcmuio_cmd(struct comedi_device *dev, struct comedi_subdevice *s) 
	spin_lock_irqsave(&chip->spinlock, flags);

	chip->active = 1;



	chip->stop_count = cmd->stop_arg;



	/* Set up start of acquisition. */

	if (cmd->start_src == TRIG_INT)

		s->async->inttrig = pcmuio_inttrig_start_intr;