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staging: comedi: das16: use comedi_timeout()

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Use comedi_timeout() to wait for the analog input end-of-conversion.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2014-02-10 11:49:03 -07:00 committed by Greg Kroah-Hartman
parent 1f804706a6
commit fe45e153d4
1 changed files with 9 additions and 10 deletions
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19
drivers/staging/comedi/drivers/das16.c
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@ -856,18 +856,17 @@ static void das16_ai_munge(struct comedi_device *dev,
} }
} }
static int das16_ai_wait_for_conv(struct comedi_device *dev, static int das16_ai_eoc(struct comedi_device *dev,
unsigned int timeout) struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned long context)
{ {
unsigned int status; unsigned int status;
int i;
for (i = 0; i < timeout; i++) { status = inb(dev->iobase + DAS16_STATUS_REG);
status = inb(dev->iobase + DAS16_STATUS_REG); if ((status & DAS16_STATUS_BUSY) == 0)
if (!(status & DAS16_STATUS_BUSY)) return 0;
return 0; return -EBUSY;
}
return -ETIME;
} }
static int das16_ai_insn_read(struct comedi_device *dev, 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 */ /* trigger conversion */
outb_p(0, dev->iobase + DAS16_TRIG_REG); 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) if (ret)
return ret; return ret;