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/das16.c | 19 +++++++++----------
1 file changed, 9 insertions(+), 10 deletions(-)
diff --git a/drivers/staging/comedi/drivers/das16.c b/drivers/staging/comedi/drivers/das16.c
index a8446ca..6a7d652 100644
--- a/drivers/staging/comedi/drivers/das16.c
+++ b/drivers/staging/comedi/drivers/das16.c
@@ -856,18 +856,17 @@ static void das16_ai_munge(struct comedi_device *dev,
}
}
-static int das16_ai_wait_for_conv(struct comedi_device *dev,
- unsigned int timeout)
+static int das16_ai_eoc(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned long context)
{
unsigned int status;
- int i;
- for (i = 0; i < timeout; i++) {
- status = inb(dev->iobase + DAS16_STATUS_REG);
- if (!(status & DAS16_STATUS_BUSY))
- return 0;
- }
- return -ETIME;
+ status = inb(dev->iobase + DAS16_STATUS_REG);
+ if ((status & DAS16_STATUS_BUSY) == 0)
+ return 0;
+ return -EBUSY;
}
static int das16_ai_insn_read(struct comedi_device *dev,
@@ -897,7 +896,7 @@ static int das16_ai_insn_read(struct comedi_device *dev,
/* trigger conversion */
outb_p(0, dev->iobase + DAS16_TRIG_REG);
- ret = das16_ai_wait_for_conv(dev, 1000);
+ ret = comedi_timeout(dev, s, insn, das16_ai_eoc, 0);
if (ret)
return ret;
--
1.8.5.2
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