Commit adbc9ec7 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
Browse files

staging: comedi: adv_pci1710: ai (*cancel) should not enable software trigger

The (*cancel) operation should do just that. Remove the setting of the SW bit
which enables the software trigger.

For aesthetics, rename the function so it has namespace associated with the
driver and add a couple comments.
Signed-off-by: default avatarH Hartley Sweeten <>
Reviewed-by: default avatarIan Abbott <>
Signed-off-by: default avatarGreg Kroah-Hartman <>
parent d3e8ab48
......@@ -365,16 +365,19 @@ static int pci171x_ai_insn_read(struct comedi_device *dev,
return ret ? ret : insn->n;
static int pci171x_ai_cancel(struct comedi_device *dev,
static int pci1710_ai_cancel(struct comedi_device *dev,
struct comedi_subdevice *s)
struct pci1710_private *devpriv = dev->private;
devpriv->ctrl &= PCI171X_CTRL_CNT0;
devpriv->ctrl |= PCI171X_CTRL_SW;
/* reset any operations */
/* disable A/D triggers and interrupt sources */
devpriv->ctrl &= PCI171X_CTRL_CNT0; /* preserve counter 0 clk src */
outw(devpriv->ctrl, dev->iobase + PCI171X_CTRL_REG);
/* disable pacer */
comedi_8254_pacer_enable(dev->pacer, 1, 2, false);
/* clear A/D FIFO and any pending interrutps */
outb(0, dev->iobase + PCI171X_CLRFIFO_REG);
outb(0, dev->iobase + PCI171X_CLRINT_REG);
......@@ -806,7 +809,7 @@ static int pci1710_auto_attach(struct comedi_device *dev,
s->len_chanlist = s->n_chan;
s->do_cmdtest = pci171x_ai_cmdtest;
s->do_cmd = pci171x_ai_cmd;
s->cancel = pci171x_ai_cancel;
s->cancel = pci1710_ai_cancel;
/* find the value needed to adjust for unipolar gain codes */
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