From b03130b649840f5a25941a7e8ae78dea6d750c85 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Wed, 5 Nov 2014 10:21:02 -0700 Subject: [PATCH] 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: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/pcmuio.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/drivers/staging/comedi/drivers/pcmuio.c b/drivers/staging/comedi/drivers/pcmuio.c index 18c2ac28e34a..0f5483b6147f 100644 --- a/drivers/staging/comedi/drivers/pcmuio.c +++ b/drivers/staging/comedi/drivers/pcmuio.c @@ -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) - s->async->events |= COMEDI_CB_EOA; - } - } + 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; -- 2.20.1