From 09959d658ce9049579561c7cb6acedaae74f5222 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Wed, 5 Nov 2014 10:21:01 -0700 Subject: [PATCH] staging: comedi: pcmmio: use comedi_async 'scans_done' to detect EOA Remove the private data member '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/pcmmio.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/staging/comedi/drivers/pcmmio.c b/drivers/staging/comedi/drivers/pcmmio.c index df47967..985fabd 100644 --- a/drivers/staging/comedi/drivers/pcmmio.c +++ b/drivers/staging/comedi/drivers/pcmmio.c @@ -190,7 +190,6 @@ struct pcmmio_private { spinlock_t pagelock; /* protects the page registers */ spinlock_t spinlock; /* protects the member variables */ unsigned int enabled_mask; - unsigned int stop_count; unsigned int active:1; }; @@ -358,12 +357,9 @@ static void pcmmio_handle_dio_intr(struct comedi_device *dev, comedi_buf_write_samples(s, &val, 1); - /* Check for end of acquisition. */ - if (cmd->stop_src == TRIG_COUNT && devpriv->stop_count > 0) { - devpriv->stop_count--; - if (devpriv->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(&devpriv->spinlock, flags); @@ -468,8 +464,6 @@ static int pcmmio_cmd(struct comedi_device *dev, struct comedi_subdevice *s) spin_lock_irqsave(&devpriv->spinlock, flags); devpriv->active = 1; - devpriv->stop_count = cmd->stop_arg; - /* Set up start of acquisition. */ if (cmd->start_src == TRIG_INT) s->async->inttrig = pcmmio_inttrig_start_intr; -- 2.7.4