Use comedi_timeout() to wait for the analog input end-of-conversion.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/das800.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/drivers/staging/comedi/drivers/das800.c b/drivers/staging/comedi/drivers/das800.c
index 5af0a57..dbe94ce 100644
--- a/drivers/staging/comedi/drivers/das800.c
+++ b/drivers/staging/comedi/drivers/das800.c
@@ -556,15 +556,17 @@ static irqreturn_t das800_interrupt(int irq, void *d)
return IRQ_HANDLED;
}
-static int das800_wait_for_conv(struct comedi_device *dev, int timeout)
+static int das800_ai_eoc(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned long context)
{
- int i;
+ unsigned int status;
- for (i = 0; i < timeout; i++) {
- if (!(inb(dev->iobase + DAS800_STATUS) & BUSY))
- return 0;
- }
- return -ETIME;
+ status = inb(dev->iobase + DAS800_STATUS);
+ if ((status & BUSY) == 0)
+ return 0;
+ return -EBUSY;
}
static int das800_ai_insn_read(struct comedi_device *dev,
@@ -599,7 +601,7 @@ static int das800_ai_insn_read(struct comedi_device *dev,
/* trigger conversion */
outb_p(0, dev->iobase + DAS800_MSB);
- ret = das800_wait_for_conv(dev, 1000);
+ ret = comedi_timeout(dev, s, insn, das800_ai_eoc, 0);
if (ret)
return ret;
--
1.8.5.2
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